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  • How does 301 redirection work across the network? & should I use it if there is a chance we made need to change the resource back to the original URL?

    - by Faust
    I've built a CMS that makes it fairly easy for my client to relocate pages in their site hierarchy. This site has all human-readable and intuitive URLs, so moving a page necessarily means that its URL changes. I am storing records of each resource's past URLs in the data store so that requests for bygone URLs are re-routed to their appropriate successors. I'm warning my clients not to re-arrange the site willy-nilly (for numerous reasons). But nevertheless I suspect there's a chance page moves could get reversed from time to time. So I'm trying to figure out whether 301 or 302 or 307 redirects should be used when serving up pages to requests for out-of-date URLs. I understand the value of using 301 for search engine optimization. But my concern is with this system possibly inadvertently making some pages unavailable to some users QUESTIONS: That is, if the clients move a page at location/URL A to a new location B, then users get the redirect for A to B, and then the clients move the page back to A again, how long can I expect any of those users to keep getting their requests for A redirected to B -- in this case sending them to my friendly 404 page? Is it until an item in their browser history is cleared? Is the redirect somehow cached in routers throughout the internet? How does this work? How long can I expect the 301 redirect to linger out there ?

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  • How can I tell if I am overusing multi-threading?

    - by exhuma
    NOTE: This is a complete re-write of the question. The text before was way too lengthy and did not get to the point! If you're interested in the original question, you can look it up in the edit history. I currently feel like I am over-using multi-threading. I have 3 types of data, A, B and C. Each A can be converted to multiple Bs and each B can be converted to multiple Cs. I am only interested in treating Cs. I could write this fairly easily with a couple of conversion functions. But I caught myself implementing it with threads, three queues (queue_a, queue_b and queue_c). There are two threads doing the different conversions, and one worker: ConverterA reads from queue_a and writes to queue_b ConverterB reads from queue_b and writes to queue_c Worker handles each element from queue_c The conversions are fairly mundane, and I don't know if this model is too convoluted. But it seems extremely robust to me. Each "converter" can start working even before data has arrived on the queues, and at any time in the code I can just "submit" new As or Bs and it will trigger the conversion pipeline which in turn will trigger a job by the worker thread. Even the resulting code looks simpler. But I still am unsure if I am abusing threads for something simple.

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  • GeoTools Demo Embedded in an Application Framework via Maven

    - by Geertjan
    GeoTools 8.4 was very recently released, according to its active blog, and to celebrate here's a starting point for working with GeoTools on the NetBeans Platform: The sources of the above are below, as a Maven project, so this project can be used in any IDE or command line: http://java.net/projects/nb-api-samples/sources/api-samples/show/versions/7.3/tutorials/geospatial/geotools/MyGeospatialSystem Though quite dated, the GeoTools NetBeans Quick Start is very helpful, especially since it used Maven too, but not the NetBeans Platform, unlike the above sample. From the point of view of NetBeans Platform developers, the GeoTools JMapPane class is very useful, providing the integration point between GeoTools and the rest of the NetBeans Platform application. Being integrated into the NetBeans Platform means that a host of standard features are now available to the GeoTools features, e.g., print functionality, which only requires a runtime dependency on the NetBeans Print API, together with the "print.printable" client property put into constructor of the TopComponent: By the way, I've spent some time now and again being confused about the difference between GeoTools and GeoToolkit. Here's an interesting starting point to beginning to understand the differences and history between them. Soon I'd like to have an example similar for the above for GeoToolkit.

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  • Two Hidden NetBeans Keyboard Shortcuts for Opening & Toggling between Views

    - by Geertjan
    The following are two really basic shortcuts for working with NetBeans editor windows that will be added to the Keyboard Shortcuts card for NetBeans IDE 7.2: Ctrl-Alt-PgUp/PgDown: Shortcuts for switching between editor types (e.g. Source, Design, History buttons). Switching between the editor types is a frequent operation sometimes, e.g., when using GUI builder, and while it can be done easily via mouse, or from View | Editors menu, it is very handy to know the shortcuts as well. Ctrl-PgUp/PgDown: Similarly, these are shortcuts for switching to next/previous opened document (tab). Note this is not like Ctrl-Tab that cycles in the last used order, but going through the tabs as they appear in the editor. Both shortcuts should fit into the "Opening and Toggling between Views" section. These are important to mention on the card because they are not visible anywhere else in the UI (as there are no menu items like "Go to next/previous editor type" or "Go to next/previous document"). Reported by Tomas Pavek from the NetBeans Team, here: http://netbeans.org/bugzilla/show_bug.cgi?id=213815

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  • Is text-only mode a saving or a problem for battery savings?

    - by Robottinosino
    A friend is flying to the US from Europe and asked me a very thought-provoking question, which I am not remotely able to answer with substance so I am asking it here: How to absolutely maximise battery life on an Ubuntu (laptop) install? do not rush to mark this as duplicate, there is an important point here: does -GNOME- help or worsen battery life? Let me provide some context: The only task he needs to perform is: edit text files in Vim. He is unsure whether running GNOME will drain his battery life more or actually save him some battery life given the smarts of GNOME's power management features like "switch this peripheral to -power save- after X minutes..." (GNOME might just be a configuration front-end for settings that are governed by command-line utils for all I know?) He could perfectly well boot the system in text-only mode and use the automatic 6 virtual consoles for his needs, if that's a saving at all over running tmux (I think so because of all the smart buffering/history/etc the latter does by default?) Exactly how would you advise him to run his laptop during his flight? What I told him already: power off WiFi in the BIOS, not from the "GUI" power off Bluetooth switch off the courtesy light and use low monitor brightness play music off of his phone, not mp3blaster do not use his tiny portable mouse (and do not attach any other USB gimmicks like "screen light", etc) stop development services he will not be using, especially apache2, tomcat, dovecot, postgresql, etc. Potentially: - switch off his cron jobs? (he does an rsync + tar + 7za of his "work in progress" every so often) I think the above is standard stuff one could get off StackExchange, and with many duplicates... the core of this question is, I think: __ will running Ubuntu in text-only mode be a saving in terms of battery life or a problem? why? (provide some technical arguments) __ I think it will be a saving but I am also scared about "other things" detecting and enabling advanced chipset power management features only when some services are started.. and fear these "services" may be off in text-only mode?

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  • Spending a good fortune on a certificate holding Scrum Master or a Veteran XP coach?

    - by ashy_32bit
    There is a very prestigious company that delivers a well-sold software about financial systems. It has more that 20 years of history, and is staffed with about 20 programmers and much larger number of managerial staff. Dissatisfied customers have reported strange bugs and no one has a clue what is wrong, hard to read code, and customization is prohibitively expensive. In a word, the software is rotten. The company decided to spend a fortune and found the Agile thing as the remedy but they are stuck about what it is they need most urgently. Is it about the process or the developers or both? The challenge breaks down to the following options: They can hire a certificate holding Scrum Master to teach them Scrum. When asked about the value of doing it, the SM responded: "I will prepare them to embrace Agile and only then they can go Agile and save the product". They can as well hire a veteran XP coach. When posed with the same question he responded : "The most urgent problem is with the programmers and not the management, XP will save the product from rot and only then Scrum will make sense" Developers are far from capable of doing agile programming practices at the moment. No unit tests, no pair programmings, no CI (huh? what is it?) ... you get the idea. Some say they would be far better trying to improve their programming first (hire option 2) and then go with the process. Many say quite the opposite. Any insights ?

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  • Which metric/list should be used to evaluate whole software development team?

    - by adt
    Title might be seem vague, so let me tell you a little bit history what i am trying to clarify question. I have been hired as a consultant for a corporate's small developement divison ( The company also owns a couple of software dev. companies) My ex manager runs a BI team, with reportes, analyts and developers. He asked me to evaluate overall design, software developement process and code quality . Here what i found, Lots of copy/paste code everywhere ( no reuse ) Even though they have everything TFS, VS Ultimate etc, No Build process , No Cruise Control.net / team city... No unit tests Web Pages with 3700 lines of code, Lots of huge functions ( which can be divided into smaller one's ) No naming convention both db and c# code No 3r party or open source project No IoC No Seperation Of Concerns No Code Quality Check ( NDepend or FxCope or nothing ) No Code Review No Communication within the team They claim they wrote an application framework ( 6 months 3 persons), but I would hardly call a framework ( of course no unit test, there are some but all commented out). Framework contains 14 projects but there are some projects with 1 file 20 lines of code . Honestly, what people are doing fixing bug all thr day( which will provide more bugs eventually), they are kind of isolated from community, some team members even dont know github or stackoverflow they probably went there with google but they dont know about it. So here is question, Is This list ok ? Or am i being picky? Since I dont have any grudge against them, I just want to be fair, honest and I would like to hear you suggestions, before I would submit this list. And since this list also will be review by software division's manager, I dont want any heart break or something like this. http://www.hanselman.com/altnetgeekcode/ For example I would love to such lists, i cant make references. Thanks in advance.

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  • Introducing RedPatch

    - by timhill
    The Ksplice team is happy to announce the public availability of one of our git repositories, RedPatch. RedPatch contains the source for all of the changes Red Hat makes to their kernel, one commit per fix and we've published it on oss.oracle.com/git. With RedPatch, you can access the broken-out patches using git, browse them online via gitweb, and freely redistribute the source under the terms of the GPL. This is the same policy we provide for Oracle Linux and the Unbreakable Enterprise Kernel (UEK). Users can freely access the source, view the commit logs and easily identify the changes that are relevant to their environments. To understand why we've created this project we'll need a little history. In early 2011, Red Hat changed how they released their kernel source, going from a tarball that had individual patch files to shipping the kernel source as one giant tarball with a single patch for all Red Hat-introduced changes. For most people who work in the kernel this is merely an inconvenience; driver developers and other out-of-kernel module developers can see the end result to make sure their module still performs as expected. For Ksplice, we build individual updates for each change and rely on source patches that are broken-out, not a giant tarball. Otherwise, we wouldn’t be able to take the right patches to create individual updates for each fix, and to skip over the noise — like a change that speeds up bootup — which is unnecessary for an already-running system. We’ve been taking the monolithic Red Hat patch tarball and breaking it into smaller commits internally ever since they introduced this change. At Oracle, we feel everyone in the Linux community can benefit from the work we already do to get our jobs done, so now we’re sharing these broken-out patches publicly. In addition to RedPatch, the complete source code for Oracle Linux and the Oracle Unbreakable Enterprise Kernel (UEK) is available from both ULN and our public yum server, including all security errata. Check out RedPatch and subscribe to [email protected] for discussion about the project. Also, drop us a line and let us know how you're using RedPatch!

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  • Ubuntu 12.10 hotkeys not working properly [closed]

    - by Sly
    A couple of weeks ago, I ran a distribution upgrade from 12.04 to 12.10. Unfortunately, something has seemed to happen with the hotkeys on the system. At first, I thought that maybe this was just a glitch with the global hotkeys. That didn't turn out to be the case, as the custom hotkey I added into the Ubuntu settings works for my editor. The only default hotkey that seems to have a problem launching is CTRL+ALT+T (Terminal). This wasn't such a big issue to begin with, because I can always just drag the Terminal to my launcher and launch it from there. However, I was on Chrome earlier and tried to do SHIFT+CTRL+DEL to clear the history and it failed. I then tried to do SHIFT+ESC, just to see if the hotkey for the task manager would work.. and it did. I also thought it could be something with the "CTRL" key, since SHIFT+ESC works, but SHIFT+CTRL+DEL doesn't. That didn't turn out to be the case either, as keys like CTRL+ALT+DEL (logout) work perfectly fine. Not quite sure how to go about this, and I haven't found any errors in any of /var/log that raises any suspicion.

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  • Allowing client to select data to return via REST interface

    - by CMP
    I have a rest service that is essentially a proxy to a variety of other services. So if I call GET /users/{id} It will get their user profile, as well as order history, and contact info, etc... all from various services, and aggregates them into one nice object. My problem is that each call to a different service has the potential to add time to the original request, so we would rather not get ALL the data ALL of the time if a particular client does not care about all of the pieces. A solution I have arrived at is to do something like this: GET /users/{id}?includeOrders=true&includeX=true&includeY=true... That works, and it allow me to do only what I need to, but it is cumbersome. We have added enough different data sources that there are too many parameters for that style to be useful. I could do something similar with a single integer and a bitmask or something, but that only makes it harder to read, and it does not feel very Restful. I could break it down into multiple calls so they would need to call /users/{id}/orders and /users/{id}/profile separately, but that sort of defeats the purpose of an aggregating proxy, who's purpose is to make clients jobs easier. Are there any good patterns that can help me return just enough data for each client, without making it too difficult for them to filter and select what they want?

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  • Grub gives messages about the boot sector being used by other software. What should I do?

    - by Bobble
    This only happens with one of my computers. It is an elderly laptop that has had a long and varied history with several operating systems, but in its retirement it is acting as a server for my home network using Ubuntu 12.04. It is a single-boot system, there are no other systems installed. Every so often, whenever there is a grub upgrade, I notice a message like this: Setting up grub-common (1.99-21ubuntu3.4) ... Installing new version of config file /etc/grub.d/00_header ... Setting up grub2-common (1.99-21ubuntu3.4) ... Setting up grub-pc-bin (1.99-21ubuntu3.4) ... Setting up grub-pc (1.99-21ubuntu3.4) ... /usr/sbin/grub-setup: warn: Sector 32 is already in use by FlexNet; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track. Installation finished. No error reported. Should I be worried about this? What (if anything) should I do about it?

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  • Will Ubuntu work out on my mother's computer?

    - by PleaseStand
    My mother had an old Compaq desktop computer running Windows 98, which she used for occasional Web browsing and playing cards. Recently, a relative brought up a newer computer; it ran Windows XP. Unfortunately, the hard drive failed soon afterward, forcing me to reinstall the operating system. Not having the original Windows disc or product key led me to consider Ubuntu Linux. Will it work for mom? Is the hardware compatible? (Check the history of this question for the full specifications.) Would Ubuntu/Xubuntu suffice, or would I be better off buying a new copy of Windows? Is her card game (Hoyle Card Games 3) likely to run on Wine? I believe the minimum system requirement is Windows 95. Failing Wine compatibility, is running Windows 98 on VirtualBox an option on such an old computer? Are there any equally good card games for Linux? She plays mainly Bridge, Poker, and Solitaire. Is there any "Large Fonts" option for those with poor vision? Is it possible to use a serial mouse?

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  • How to undelete files in TFS

    - by Tarun Arora
    Have you accidently deleted files from TFS and are looking at a way to undelete the file? You don’t have to undo your previous check in to get the files back, there is a simpler way. 01 – View Deleted items in Team Explorer Have you been wondering how you can view deleted items in Team Explorer? Well, go to tools, options, Source Control. From Visual Studio Team Foundation check ‘show deleted items in the Source Control Explorer’.  02 – Undelete files from TFS Simply right click the deleted file or folder and from the context menu select ‘Undelete’. This will roll back the files to the version before the delete operation was committed on them.  The undeleted changes now show up as pending changes in your workspace. You need to right click the folder and select Check In Pending changes from the context menu to restore the files. Add a comment and check in the files back to TFS to undelete them Right click the folder and view history. You’ll see both the check in that deleted the file/folder and the check in that restored it. So, that’s how you can restoring deleted files in TFS… Nice and simple… Right?

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  • How do I tell my parents that landing a job is what actually counts?

    - by shovonr
    On one side, I just want to get a degree with a 3.0 GPA. On the other side, my parents want more than just a 3. Now here's the thing. I program with a passion. I spend day and night programming. And I ace all my programming courses. However, I do terrible on all my elective courses -- such as writing, history, and all that stuff -- which only leaves me with a 3.1 to 3.2 GPA. And my parents want more. They think that university is like high school, where you need super-stellar grades to get to the next level. But they don't realize that good enough grades will land me a job. And they don't realize that a programmer needs to practice to become good at programming, and that having good skills is what will land a job in a nice software development company. Thankfully, though, they don't threaten to beat me with a baseball bat or anything like that. They just occasionally give me the little "tsk-tsk". But even that little "tsk-tsk" makes me feel guilty for opening up an IDE. And on top of that, I procrastinate because of that feeling of guilt. So now, I want to come clean with them. I want to know what's a good way to do that. [Edit] OK, so now, I realized, I should aim for higher grades, as some have suggested below.

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  • I failed FizzBuzz, would you hire me? [closed]

    - by ja_programmer
    I'm a developer with a CS degree and have work experience doing development in a number of languages for almost 3 years. Today had an interview (2nd interview) with a panel of people. Overall it went quite well, I prepared for most of the questions and felt ready for anything. At the end of the interview, they gave me ONE programming question...a problem like FizzBuzz (without the print the number part). I believe I made too many mistakes and thus have "failed" it. Is all hope lost for me? Here is my code: void FizzBuzz() { for(int i = 0; i <= 100; i++) { bool isThree = i % 3; bool isFive = i % 5; if (isThree) { print "Fizz\n"; } else if(isFive) { print "Buzz\n"; } else { print "FizzBuzz\n"; } } } As you can see I messed up the bools which should have the syntax i % 3 == 0; If I'm remembering the question right I also put an else instead of an elseif with isThree && isFive. I was quite stressed, but that's no excuse for missing a simple problem. So the question is, if my work history and personality fit with the job and this is the only code you've seen, would you hire me?

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  • VCS for single user using file sync service

    - by StackUnder
    I'm trying to setup a version control for my one man project. My project files are in sync thanks to live mesh (but I could be using dropbox for that matter), between my laptop, my home pc and my office pc. I'm now using Netbeans with local file history. Sometimes it helps to revert to a previous state of one file. But imagine a situation when multiple files have problems. Correct me if I'm wrong but I would have to go to every file and revert to previous "safe" state. I don't like this approach, so I'm considering using a version control between SVN and GIT. I have some previous experience with SVN (TortoiseSVN) and I know that I can create a file:// repo. So, what a want to do is setup a VCS inside my synced folder just to have the ability to "revert" to a previous version if something goes wrong. Since everything's been synced to all computers, I wouldn't ever need to run an update. The file tree organization would be the following: C:...\SyncedFolder\MyProject\ Inside MyProject folder are all the project files plus a directory that has SVN or GIT info of my project (the repo/master). What VCS is best for this situation: SVN or GIT? Does SVN need to store all files from HEAD revision, thus "duplicating" all my project inside my synced folder? Does GIT eliminates this problem? Is this the best approach?

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  • ASP.NET Podcast Show #148 - ASP.NET WebForms to build a Mobile Web Application

    - by Wallym
    Check the podcast site for the original url. This is the video and source code for an ASP.NET WebForms app that I wrote that is optimized for the iPhone and mobile environments.  Subscribe to everything. Subscribe to WMV. Subscribe to M4V for iPhone/iPad. Subscribe to MP3. Download WMV. Download M4V for iPhone/iPad. Download MP3. Link to iWebKit. Source Code: <%@ Page Title="MapSplore" Language="C#" MasterPageFile="iPhoneMaster.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="AT_iPhone_Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"></asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="Content" Runat="Server" ClientIDMode="Static">    <asp:ScriptManager ID="sm" runat="server"         EnablePartialRendering="true" EnableHistory="false" EnableCdn="true" />    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>    <script  language="javascript"  type="text/javascript">    <!--    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(endRequestHandle);    function endRequestHandle(sender, Args) {        setupMapDiv();        setupPlaceIveBeen();    }    function setupPlaceIveBeen() {        var mapPlaceIveBeen = document.getElementById('divPlaceIveBeen');        if (mapPlaceIveBeen != null) {            var PlaceLat = document.getElementById('<%=hdPlaceIveBeenLatitude.ClientID %>').value;            var PlaceLon = document.getElementById('<%=hdPlaceIveBeenLongitude.ClientID %>').value;            var PlaceTitle = document.getElementById('<%=lblPlaceIveBeenName.ClientID %>').innerHTML;            var latlng = new google.maps.LatLng(PlaceLat, PlaceLon);            var myOptions = {                zoom: 14,                center: latlng,                mapTypeId: google.maps.MapTypeId.ROADMAP            };            var map = new google.maps.Map(mapPlaceIveBeen, myOptions);            var marker = new google.maps.Marker({                position: new google.maps.LatLng(PlaceLat, PlaceLon),                map: map,                title: PlaceTitle,                clickable: false            });        }    }    function setupMapDiv() {        var mapdiv = document.getElementById('divImHere');        if (mapdiv != null) {            var PlaceLat = document.getElementById('<%=hdPlaceLat.ClientID %>').value;            var PlaceLon = document.getElementById('<%=hdPlaceLon.ClientID %>').value;            var PlaceTitle = document.getElementById('<%=hdPlaceTitle.ClientID %>').value;            var latlng = new google.maps.LatLng(PlaceLat, PlaceLon);            var myOptions = {                zoom: 14,                center: latlng,                mapTypeId: google.maps.MapTypeId.ROADMAP            };            var map = new google.maps.Map(mapdiv, myOptions);            var marker = new google.maps.Marker({                position: new google.maps.LatLng(PlaceLat, PlaceLon),                map: map,                title: PlaceTitle,                clickable: false            });        }     }    -->    </script>    <asp:HiddenField ID="Latitude" runat="server" />    <asp:HiddenField ID="Longitude" runat="server" />    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js%22%3E%3C/script>    <script language="javascript" type="text/javascript">        $(document).ready(function () {            GetLocation();            setupMapDiv();            setupPlaceIveBeen();        });        function GetLocation() {            if (navigator.geolocation != null) {                navigator.geolocation.getCurrentPosition(getData);            }            else {                var mess = document.getElementById('<%=Message.ClientID %>');                mess.innerHTML = "Sorry, your browser does not support geolocation. " +                    "Try the latest version of Safari on the iPhone, Android browser, or the latest version of FireFox.";            }        }        function UpdateLocation_Click() {            GetLocation();        }        function getData(position) {            var latitude = position.coords.latitude;            var longitude = position.coords.longitude;            var hdLat = document.getElementById('<%=Latitude.ClientID %>');            var hdLon = document.getElementById('<%=Longitude.ClientID %>');            hdLat.value = latitude;            hdLon.value = longitude;        }    </script>    <asp:Label ID="Message" runat="server" />    <asp:UpdatePanel ID="upl" runat="server">        <ContentTemplate>    <asp:Panel ID="pnlStart" runat="server" Visible="true">    <div id="topbar">        <div id="title">MapSplore</div>    </div>    <div id="content">        <ul class="pageitem">            <li class="menu">                <asp:LinkButton ID="lbLocalDeals" runat="server" onclick="lbLocalDeals_Click">                <asp:Image ID="imLocalDeals" runat="server" ImageUrl="~/Images/ArtFavor_Money_Bag_Icon.png" Height="30" />                <span class="name">Local Deals.</span>                <span class="arrow"></span>                </asp:LinkButton>                </li>            <li class="menu">                <asp:LinkButton ID="lbLocalPlaces" runat="server" onclick="lbLocalPlaces_Click">                <asp:Image ID="imLocalPlaces" runat="server" ImageUrl="~/Images/Andy_Houses_on_the_horizon_-_Starburst_remix.png" Height="30" />                <span class="name">Local Places.</span>                <span class="arrow"></span>                </asp:LinkButton>                </li>            <li class="menu">                <asp:LinkButton ID="lbWhereIveBeen" runat="server" onclick="lbWhereIveBeen_Click">                <asp:Image ID="imImHere" runat="server" ImageUrl="~/Images/ryanlerch_flagpole.png" Height="30" />                <span class="name">I've been here.</span>                <span class="arrow"></span>                </asp:LinkButton>                </li>            <li class="menu">                <asp:LinkButton ID="lbMyStats" runat="server">                <asp:Image ID="imMyStats" runat="server" ImageUrl="~/Images/Anonymous_Spreadsheet.png" Height="30" />                <span class="name">My Stats.</span>                <span class="arrow"></span>                </asp:LinkButton>                </li>            <li class="menu">                <asp:LinkButton ID="lbAddAPlace" runat="server" onclick="lbAddAPlace_Click">                <asp:Image ID="imAddAPlace" runat="server" ImageUrl="~/Images/jean_victor_balin_add.png" Height="30" />                <span class="name">Add a Place.</span>                <span class="arrow"></span>                </asp:LinkButton>                </li>            <li class="button">                <input type="button" value="Update Your Current Location" onclick="UpdateLocation_Click()">                </li>        </ul>    </div>    </asp:Panel>    <div>    <asp:Panel ID="pnlCoupons" runat="server" Visible="false">        <div id="topbar">        <div id="title">MapSplore</div>        <div id="leftbutton">            <asp:LinkButton runat="server" Text="Return"                 ID="ReturnFromDeals" OnClick="ReturnFromDeals_Click" /></div></div>    <div class="content">    <asp:ListView ID="lvCoupons" runat="server">        <LayoutTemplate>            <ul class="pageitem" runat="server">                <asp:PlaceHolder ID="itemPlaceholder" runat="server" />            </ul>        </LayoutTemplate>        <ItemTemplate>            <li class="menu">                <asp:LinkButton ID="lbBusiness" runat="server" Text='<%#Eval("Place.Name") %>' OnClick="lbBusiness_Click">                    <span class="comment">                    <asp:Label ID="lblAddress" runat="server" Text='<%#Eval("Place.Address1") %>' />                    <asp:Label ID="lblDis" runat="server" Text='<%# Convert.ToString(Convert.ToInt32(Eval("Place.Distance"))) + " meters" %>' CssClass="smallText" />                    <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' />                    <asp:HiddenField ID="hdGeoPromotionId" runat="server" Value='<%#Eval("GeoPromotionId") %>' />                    </span>                    <span class="arrow"></span>                </asp:LinkButton></li></ItemTemplate></asp:ListView><asp:GridView ID="gvCoupons" runat="server" AutoGenerateColumns="false">            <HeaderStyle BackColor="Silver" />            <AlternatingRowStyle BackColor="Wheat" />            <Columns>                <asp:TemplateField AccessibleHeaderText="Business" HeaderText="Business">                    <ItemTemplate>                        <asp:Image ID="imPlaceType" runat="server" Text='<%#Eval("Type") %>' ImageUrl='<%#Eval("Image") %>' />                        <asp:LinkButton ID="lbBusiness" runat="server" Text='<%#Eval("Name") %>' OnClick="lbBusiness_Click" />                        <asp:LinkButton ID="lblAddress" runat="server" Text='<%#Eval("Address1") %>' CssClass="smallText" />                        <asp:Label ID="lblDis" runat="server" Text='<%# Convert.ToString(Convert.ToInt32(Eval("Distance"))) + " meters" %>' CssClass="smallText" />                        <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' />                        <asp:HiddenField ID="hdGeoPromotionId" runat="server" Value='<%#Eval("GeoPromotionId") %>' />                        <asp:Label ID="lblInfo" runat="server" Visible="false" />                    </ItemTemplate>                </asp:TemplateField>            </Columns>        </asp:GridView>    </div>    </asp:Panel>    <asp:Panel ID="pnlPlaces" runat="server" Visible="false">    <div id="topbar">        <div id="title">            MapSplore</div><div id="leftbutton">            <asp:LinkButton runat="server" Text="Return"                 ID="ReturnFromPlaces" OnClick="ReturnFromPlaces_Click" /></div></div>        <div id="content">        <asp:ListView ID="lvPlaces" runat="server">            <LayoutTemplate>                <ul id="ulPlaces" class="pageitem" runat="server">                    <asp:PlaceHolder ID="itemPlaceholder" runat="server" />                    <li class="menu">                        <asp:LinkButton ID="lbNotListed" runat="server" CssClass="name"                            OnClick="lbNotListed_Click">                            Place not listed                            <span class="arrow"></span>                            </asp:LinkButton>                    </li>                </ul>            </LayoutTemplate>            <ItemTemplate>            <li class="menu">                <asp:LinkButton ID="lbImHere" runat="server" CssClass="name"                     OnClick="lbImHere_Click">                <%#DisplayName(Eval("Name")) %>&nbsp;                <%# Convert.ToString(Convert.ToInt32(Eval("Distance"))) + " meters" %>                <asp:HiddenField ID="hdPlaceId" runat="server" Value='<%#Eval("PlaceId") %>' />                <span class="arrow"></span>                </asp:LinkButton></li></ItemTemplate></asp:ListView>    </div>    </asp:Panel>    <asp:Panel ID="pnlImHereNow" runat="server" Visible="false">        <div id="topbar">        <div id="title">            MapSplore</div><div id="leftbutton">            <asp:LinkButton runat="server" Text="Places"                 ID="lbImHereNowReturn" OnClick="lbImHereNowReturn_Click" /></div></div>            <div id="rightbutton">            <asp:LinkButton runat="server" Text="Beginning"                ID="lbBackToBeginning" OnClick="lbBackToBeginning_Click" />            </div>        <div id="content">        <ul class="pageitem">        <asp:HiddenField ID="hdPlaceId" runat="server" />        <asp:HiddenField ID="hdPlaceLat" runat="server" />        <asp:HiddenField ID="hdPlaceLon" runat="server" />        <asp:HiddenField ID="hdPlaceTitle" runat="server" />        <asp:Button ID="btnImHereNow" runat="server"             Text="I'm here" OnClick="btnImHereNow_Click" />             <asp:Label ID="lblPlaceTitle" runat="server" /><br />        <asp:TextBox ID="txtWhatsHappening" runat="server" TextMode="MultiLine" Rows="2" style="width:300px" /><br />        <div id="divImHere" style="width:300px; height:300px"></div>        </div>        </ul>    </asp:Panel>    <asp:Panel runat="server" ID="pnlIveBeenHere" Visible="false">        <div id="topbar">        <div id="title">            Where I've been</div><div id="leftbutton">            <asp:LinkButton ID="lbIveBeenHereBack" runat="server" Text="Back" OnClick="lbIveBeenHereBack_Click" /></div></div>        <div id="content">        <asp:ListView ID="lvWhereIveBeen" runat="server">            <LayoutTemplate>                <ul id="ulWhereIveBeen" class="pageitem" runat="server">                    <asp:PlaceHolder ID="itemPlaceholder" runat="server" />                </ul>            </LayoutTemplate>            <ItemTemplate>            <li class="menu" runat="server">                <asp:LinkButton ID="lbPlaceIveBeen" runat="server" OnClick="lbPlaceIveBeen_Click" CssClass="name">                    <asp:Label ID="lblPlace" runat="server" Text='<%#Eval("PlaceName") %>' /> at                    <asp:Label ID="lblTime" runat="server" Text='<%#Eval("ATTime") %>' CssClass="content" />                    <asp:HiddenField ID="hdATID" runat="server" Value='<%#Eval("ATID") %>' />                    <span class="arrow"></span>                </asp:LinkButton>            </li>            </ItemTemplate>        </asp:ListView>        </div>        </asp:Panel>    <asp:Panel runat="server" ID="pnlPlaceIveBeen" Visible="false">        <div id="topbar">        <div id="title">            I've been here        </div>        <div id="leftbutton">            <asp:LinkButton ID="lbPlaceIveBeenBack" runat="server" Text="Back" OnClick="lbPlaceIveBeenBack_Click" />        </div>        <div id="rightbutton">            <asp:LinkButton ID="lbPlaceIveBeenBeginning" runat="server" Text="Beginning" OnClick="lbPlaceIveBeenBeginning_Click" />        </div>        </div>        <div id="content">            <ul class="pageitem">            <li>            <asp:HiddenField ID="hdPlaceIveBeenPlaceId" runat="server" />            <asp:HiddenField ID="hdPlaceIveBeenLatitude" runat="server" />            <asp:HiddenField ID="hdPlaceIveBeenLongitude" runat="server" />            <asp:Label ID="lblPlaceIveBeenName" runat="server" /><br />            <asp:Label ID="lblPlaceIveBeenAddress" runat="server" /><br />            <asp:Label ID="lblPlaceIveBeenCity" runat="server" />,             <asp:Label ID="lblPlaceIveBeenState" runat="server" />            <asp:Label ID="lblPlaceIveBeenZipCode" runat="server" /><br />            <asp:Label ID="lblPlaceIveBeenCountry" runat="server" /><br />            <div id="divPlaceIveBeen" style="width:300px; height:300px"></div>            </li>            </ul>        </div>                </asp:Panel>         <asp:Panel ID="pnlAddPlace" runat="server" Visible="false">                <div id="topbar"><div id="title">MapSplore</div><div id="leftbutton"><asp:LinkButton ID="lbAddPlaceReturn" runat="server" Text="Back" OnClick="lbAddPlaceReturn_Click" /></div><div id="rightnav"></div></div><div id="content">    <ul class="pageitem">        <li id="liPlaceAddMessage" runat="server" visible="false">        <asp:Label ID="PlaceAddMessage" runat="server" />        </li>        <li class="bigfield">        <asp:TextBox ID="txtPlaceName" runat="server" placeholder="Name of Establishment" />        </li>        <li class="bigfield">        <asp:TextBox ID="txtAddress1" runat="server" placeholder="Address 1" />        </li>        <li class="bigfield">        <asp:TextBox ID="txtCity" runat="server" placeholder="City" />        </li>        <li class="select">        <asp:DropDownList ID="ddlProvince" runat="server" placeholder="Select State" />          <span class="arrow"></span>              </li>        <li class="bigfield">        <asp:TextBox ID="txtZipCode" runat="server" placeholder="Zip Code" />        </li>        <li class="select">        <asp:DropDownList ID="ddlCountry" runat="server"             onselectedindexchanged="ddlCountry_SelectedIndexChanged" />        <span class="arrow"></span>        </li>        <li class="bigfield">        <asp:TextBox ID="txtPhoneNumber" runat="server" placeholder="Phone Number" />        </li>        <li class="checkbox">            <span class="name">You Here Now:</span> <asp:CheckBox ID="cbYouHereNow" runat="server" Checked="true" />        </li>        <li class="button">        <asp:Button ID="btnAdd" runat="server" Text="Add Place"             onclick="btnAdd_Click" />        </li>    </ul></div>        </asp:Panel>        <asp:Panel ID="pnlImHere" runat="server" Visible="false">            <asp:TextBox ID="txtImHere" runat="server"                 TextMode="MultiLine" Rows="3" Columns="40" /><br />            <asp:DropDownList ID="ddlPlace" runat="server" /><br />            <asp:Button ID="btnHere" runat="server" Text="Tell Everyone I'm Here"                 onclick="btnHere_Click" /><br />        </asp:Panel>     </div>    </ContentTemplate>    </asp:UpdatePanel> </asp:Content> Code Behind .cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using LocationDataModel; public partial class AT_iPhone_Default : ViewStatePage{    private iPhoneDevice ipd;     protected void Page_Load(object sender, EventArgs e)    {        LocationDataEntities lde = new LocationDataEntities();        if (!Page.IsPostBack)        {            var Countries = from c in lde.Countries select c;            foreach (Country co in Countries)            {                ddlCountry.Items.Add(new ListItem(co.Name, co.CountryId.ToString()));            }            ddlCountry_SelectedIndexChanged(ddlCountry, null);            if (AppleIPhone.IsIPad())                ipd = iPhoneDevice.iPad;            if (AppleIPhone.IsIPhone())                ipd = iPhoneDevice.iPhone;            if (AppleIPhone.IsIPodTouch())                ipd = iPhoneDevice.iPodTouch;        }    }    protected void btnPlaces_Click(object sender, EventArgs e)    {    }    protected void btnAdd_Click(object sender, EventArgs e)    {        bool blImHere = cbYouHereNow.Checked;        string Place = txtPlaceName.Text,            Address1 = txtAddress1.Text,            City = txtCity.Text,            ZipCode = txtZipCode.Text,            PhoneNumber = txtPhoneNumber.Text,            ProvinceId = ddlProvince.SelectedItem.Value,            CountryId = ddlCountry.SelectedItem.Value;        int iProvinceId, iCountryId;        double dLatitude, dLongitude;        DataAccess da = new DataAccess();        if ((!String.IsNullOrEmpty(ProvinceId)) &&            (!String.IsNullOrEmpty(CountryId)))        {            iProvinceId = Convert.ToInt32(ProvinceId);            iCountryId = Convert.ToInt32(CountryId);            if (blImHere)            {                dLatitude = Convert.ToDouble(Latitude.Value);                dLongitude = Convert.ToDouble(Longitude.Value);                da.StorePlace(Place, Address1, String.Empty, City,                    iProvinceId, ZipCode, iCountryId, PhoneNumber,                    dLatitude, dLongitude);            }            else            {                da.StorePlace(Place, Address1, String.Empty, City,                    iProvinceId, ZipCode, iCountryId, PhoneNumber);            }            liPlaceAddMessage.Visible = true;            PlaceAddMessage.Text = "Awesome, your place has been added. Add Another!";            txtPlaceName.Text = String.Empty;            txtAddress1.Text = String.Empty;            txtCity.Text = String.Empty;            ddlProvince.SelectedIndex = -1;            txtZipCode.Text = String.Empty;            txtPhoneNumber.Text = String.Empty;        }        else        {            liPlaceAddMessage.Visible = true;            PlaceAddMessage.Text = "Please select a State and a Country.";        }    }    protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e)    {        string CountryId = ddlCountry.SelectedItem.Value;        if (!String.IsNullOrEmpty(CountryId))        {            int iCountryId = Convert.ToInt32(CountryId);            LocationDataModel.LocationDataEntities lde = new LocationDataModel.LocationDataEntities();            var prov = from p in lde.Provinces where p.CountryId == iCountryId                        orderby p.ProvinceName select p;                        ddlProvince.Items.Add(String.Empty);            foreach (Province pr in prov)            {                ddlProvince.Items.Add(new ListItem(pr.ProvinceName, pr.ProvinceId.ToString()));            }        }        else        {            ddlProvince.Items.Clear();        }    }    protected void btnImHere_Click(object sender, EventArgs e)    {        int i = 0;        DataAccess da = new DataAccess();        double Lat = Convert.ToDouble(Latitude.Value),            Lon = Convert.ToDouble(Longitude.Value);        List<Place> lp = da.NearByLocations(Lat, Lon);        foreach (Place p in lp)        {            ListItem li = new ListItem(p.Name, p.PlaceId.ToString());            if (i == 0)            {                li.Selected = true;            }            ddlPlace.Items.Add(li);            i++;        }        pnlAddPlace.Visible = false;        pnlImHere.Visible = true;    }    protected void lbImHere_Click(object sender, EventArgs e)    {        string UserName = Membership.GetUser().UserName;        ListViewItem lvi = (ListViewItem)(((LinkButton)sender).Parent);        HiddenField hd = (HiddenField)lvi.FindControl("hdPlaceId");        long PlaceId = Convert.ToInt64(hd.Value);        double dLatitude = Convert.ToDouble(Latitude.Value);        double dLongitude = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();        Place pl = da.GetPlace(PlaceId);        pnlImHereNow.Visible = true;        pnlPlaces.Visible = false;        hdPlaceId.Value = PlaceId.ToString();        hdPlaceLat.Value = pl.Latitude.ToString();        hdPlaceLon.Value = pl.Longitude.ToString();        hdPlaceTitle.Value = pl.Name;        lblPlaceTitle.Text = pl.Name;    }    protected void btnHere_Click(object sender, EventArgs e)    {        string UserName = Membership.GetUser().UserName;        string WhatsH = txtImHere.Text;        long PlaceId = Convert.ToInt64(ddlPlace.SelectedValue);        double dLatitude = Convert.ToDouble(Latitude.Value);        double dLongitude = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();        da.StoreUserAT(UserName, PlaceId, WhatsH,            dLatitude, dLongitude);    }    protected void btnLocalCoupons_Click(object sender, EventArgs e)    {        double dLatitude = Convert.ToDouble(Latitude.Value);        double dLongitude = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();     }    protected void lbBusiness_Click(object sender, EventArgs e)    {        string UserName = Membership.GetUser().UserName;        GridViewRow gvr = (GridViewRow)(((LinkButton)sender).Parent.Parent);        HiddenField hd = (HiddenField)gvr.FindControl("hdPlaceId");        string sPlaceId = hd.Value;        Int64 PlaceId;        if (!String.IsNullOrEmpty(sPlaceId))        {            PlaceId = Convert.ToInt64(sPlaceId);        }    }    protected void lbLocalDeals_Click(object sender, EventArgs e)    {        double dLatitude = Convert.ToDouble(Latitude.Value);        double dLongitude = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();        pnlCoupons.Visible = true;        pnlStart.Visible = false;        List<GeoPromotion> lgp = da.NearByDeals(dLatitude, dLongitude);        lvCoupons.DataSource = lgp;        lvCoupons.DataBind();    }    protected void lbLocalPlaces_Click(object sender, EventArgs e)    {        DataAccess da = new DataAccess();        double Lat = Convert.ToDouble(Latitude.Value);        double Lon = Convert.ToDouble(Longitude.Value);        List<LocationDataModel.Place> places = da.NearByLocations(Lat, Lon);        lvPlaces.DataSource = places;        lvPlaces.SelectedIndex = -1;        lvPlaces.DataBind();        pnlPlaces.Visible = true;        pnlStart.Visible = false;    }    protected void ReturnFromPlaces_Click(object sender, EventArgs e)    {        pnlPlaces.Visible = false;        pnlStart.Visible = true;    }    protected void ReturnFromDeals_Click(object sender, EventArgs e)    {        pnlCoupons.Visible = false;        pnlStart.Visible = true;    }    protected void btnImHereNow_Click(object sender, EventArgs e)    {        long PlaceId = Convert.ToInt32(hdPlaceId.Value);        string UserName = Membership.GetUser().UserName;        string WhatsHappening = txtWhatsHappening.Text;        double UserLat = Convert.ToDouble(Latitude.Value);        double UserLon = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();        da.StoreUserAT(UserName, PlaceId, WhatsHappening,             UserLat, UserLon);    }    protected void lbImHereNowReturn_Click(object sender, EventArgs e)    {        pnlImHereNow.Visible = false;        pnlPlaces.Visible = true;    }    protected void lbBackToBeginning_Click(object sender, EventArgs e)    {        pnlStart.Visible = true;        pnlImHereNow.Visible = false;    }    protected void lbWhereIveBeen_Click(object sender, EventArgs e)    {        string UserName = Membership.GetUser().UserName;        pnlStart.Visible = false;        pnlIveBeenHere.Visible = true;        DataAccess da = new DataAccess();        lvWhereIveBeen.DataSource = da.UserATs(UserName, 0, 15);        lvWhereIveBeen.DataBind();    }    protected void lbIveBeenHereBack_Click(object sender, EventArgs e)    {        pnlIveBeenHere.Visible = false;        pnlStart.Visible = true;    }     protected void lbPlaceIveBeen_Click(object sender, EventArgs e)    {        LinkButton lb = (LinkButton)sender;        ListViewItem lvi = (ListViewItem)lb.Parent.Parent;        HiddenField hdATID = (HiddenField)lvi.FindControl("hdATID");        Int64 ATID = Convert.ToInt64(hdATID.Value);        DataAccess da = new DataAccess();        pnlIveBeenHere.Visible = false;        pnlPlaceIveBeen.Visible = true;        var plac = da.GetPlaceViaATID(ATID);        hdPlaceIveBeenPlaceId.Value = plac.PlaceId.ToString();        hdPlaceIveBeenLatitude.Value = plac.Latitude.ToString();        hdPlaceIveBeenLongitude.Value = plac.Longitude.ToString();        lblPlaceIveBeenName.Text = plac.Name;        lblPlaceIveBeenAddress.Text = plac.Address1;        lblPlaceIveBeenCity.Text = plac.City;        lblPlaceIveBeenState.Text = plac.Province.ProvinceName;        lblPlaceIveBeenZipCode.Text = plac.ZipCode;        lblPlaceIveBeenCountry.Text = plac.Country.Name;    }     protected void lbNotListed_Click(object sender, EventArgs e)    {        SetupAddPoint();        pnlPlaces.Visible = false;    }     protected void lbAddAPlace_Click(object sender, EventArgs e)    {        SetupAddPoint();    }     private void SetupAddPoint()    {        double lat = Convert.ToDouble(Latitude.Value);        double lon = Convert.ToDouble(Longitude.Value);        DataAccess da = new DataAccess();        var zip = da.WhereAmIAt(lat, lon);        if (zip.Count > 0)        {            var z0 = zip[0];            txtCity.Text = z0.City;            txtZipCode.Text = z0.ZipCode;            ddlProvince.ClearSelection();            if (z0.ProvinceId.HasValue == true)            {                foreach (ListItem li in ddlProvince.Items)                {                    if (li.Value == z0.ProvinceId.Value.ToString())                    {                        li.Selected = true;                        break;                    }                }            }        }        pnlAddPlace.Visible = true;        pnlStart.Visible = false;    }    protected void lbAddPlaceReturn_Click(object sender, EventArgs e)    {        pnlAddPlace.Visible = false;        pnlStart.Visible = true;        liPlaceAddMessage.Visible = false;        PlaceAddMessage.Text = String.Empty;    }    protected void lbPlaceIveBeenBack_Click(object sender, EventArgs e)    {        pnlIveBeenHere.Visible = true;        pnlPlaceIveBeen.Visible = false;            }    protected void lbPlaceIveBeenBeginning_Click(object sender, EventArgs e)    {        pnlPlaceIveBeen.Visible = false;        pnlStart.Visible = true;    }    protected string DisplayName(object val)    {        string strVal = Convert.ToString(val);         if (AppleIPhone.IsIPad())        {            ipd = iPhoneDevice.iPad;        }        if (AppleIPhone.IsIPhone())        {            ipd = iPhoneDevice.iPhone;        }        if (AppleIPhone.IsIPodTouch())        {            ipd = iPhoneDevice.iPodTouch;        }        return (iPhoneHelper.DisplayContentOnMenu(strVal, ipd));    }} iPhoneHelper.cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web; public enum iPhoneDevice{    iPhone, iPodTouch, iPad}/// <summary>/// Summary description for iPhoneHelper/// </summary>/// public class iPhoneHelper{ public iPhoneHelper() {  //  // TODO: Add constructor logic here  // } // This code is stupid in retrospect. Use css to solve this problem      public static string DisplayContentOnMenu(string val, iPhoneDevice ipd)    {        string Return = val;        string Elipsis = "...";        int iPadMaxLength = 30;        int iPhoneMaxLength = 15;        if (ipd == iPhoneDevice.iPad)        {            if (Return.Length > iPadMaxLength)            {                Return = Return.Substring(0, iPadMaxLength - Elipsis.Length) + Elipsis;            }        }        else        {            if (Return.Length > iPhoneMaxLength)            {                Return = Return.Substring(0, iPhoneMaxLength - Elipsis.Length) + Elipsis;            }        }        return (Return);    }}  Source code for the ViewStatePage: using System;using System.Data;using System.Data.SqlClient;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls; /// <summary>/// Summary description for BasePage/// </summary>#region Base class for a page.public class ViewStatePage : System.Web.UI.Page{     PageStatePersisterToDatabase myPageStatePersister;        public ViewStatePage()        : base()    {        myPageStatePersister = new PageStatePersisterToDatabase(this);    }     protected override PageStatePersister PageStatePersister    {        get        {            return myPageStatePersister;        }    } }#endregion #region This class will override the page persistence to store page state in a database.public class PageStatePersisterToDatabase : PageStatePersister{    private string ViewStateKeyField = "__VIEWSTATE_KEY";    private string _exNoConnectionStringFound = "No Database Configuration information is in the web.config.";     public PageStatePersisterToDatabase(Page page)        : base(page)    {    }     public override void Load()    {         // Get the cache key from the web form data        System.Int64 key = Convert.ToInt64(Page.Request.Params[ViewStateKeyField]);         Pair state = this.LoadState(key);         // Abort if cache object is not of type Pair        if (state == null)            throw new ApplicationException("Missing valid " + ViewStateKeyField);         // Set view state and control state        ViewState = state.First;        ControlState = state.Second;    }     public override void Save()    {         // No processing needed if no states available        if (ViewState == null && ControlState != null)            return;         System.Int64 key;        IStateFormatter formatter = this.StateFormatter;        Pair statePair = new Pair(ViewState, ControlState);         // Serialize the statePair object to a string.        string serializedState = formatter.Serialize(statePair);         // Save the ViewState and get a unique identifier back.        key = SaveState(serializedState);         // Register hidden field to store cache key in        // Page.ClientScript does not work properly with Atlas.        //Page.ClientScript.RegisterHiddenField(ViewStateKeyField, key.ToString());        ScriptManager.RegisterHiddenField(this.Page, ViewStateKeyField, key.ToString());    }     private System.Int64 SaveState(string PageState)    {        System.Int64 i64Key = 0;        string strConn = String.Empty,            strProvider = String.Empty;         string strSql = "insert into tblPageState ( SerializedState ) values ( '" + SqlEscape(PageState) + "');select scope_identity();";        SqlConnection sqlCn;        SqlCommand sqlCm;        try        {            GetDBConnectionString(ref strConn, ref strProvider);            sqlCn = new SqlConnection(strConn);            sqlCm = new SqlCommand(strSql, sqlCn);            sqlCn.Open();            i64Key = Convert.ToInt64(sqlCm.ExecuteScalar());            if (sqlCn.State != ConnectionState.Closed)            {                sqlCn.Close();            }            sqlCn.Dispose();            sqlCm.Dispose();        }        finally        {            sqlCn = null;            sqlCm = null;        }        return i64Key;    }     private Pair LoadState(System.Int64 iKey)    {        string strConn = String.Empty,            strProvider = String.Empty,            SerializedState = String.Empty,            strMinutesInPast = GetMinutesInPastToDelete();        Pair PageState;        string strSql = "select SerializedState from tblPageState where tblPageStateID=" + iKey.ToString() + ";" +            "delete from tblPageState where DateUpdated<DateAdd(mi, " + strMinutesInPast + ", getdate());";        SqlConnection sqlCn;        SqlCommand sqlCm;        try        {            GetDBConnectionString(ref strConn, ref strProvider);            sqlCn = new SqlConnection(strConn);            sqlCm = new SqlCommand(strSql, sqlCn);             sqlCn.Open();            SerializedState = Convert.ToString(sqlCm.ExecuteScalar());            IStateFormatter formatter = this.StateFormatter;             if ((null == SerializedState) ||                (String.Empty == SerializedState))            {                throw (new ApplicationException("No ViewState records were returned."));            }             // Deserilize returns the Pair object that is serialized in            // the Save method.            PageState = (Pair)formatter.Deserialize(SerializedState);             if (sqlCn.State != ConnectionState.Closed)            {                sqlCn.Close();            }            sqlCn.Dispose();            sqlCm.Dispose();        }        finally        {            sqlCn = null;            sqlCm = null;        }        return PageState;    }     private string SqlEscape(string Val)    {        string ReturnVal = String.Empty;        if (null != Val)        {            ReturnVal = Val.Replace("'", "''");        }        return (ReturnVal);    }    private void GetDBConnectionString(ref string ConnectionStringValue, ref string ProviderNameValue)    {        if (System.Configuration.ConfigurationManager.ConnectionStrings.Count > 0)        {            ConnectionStringValue = System.Configuration.ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString;            ProviderNameValue = System.Configuration.ConfigurationManager.ConnectionStrings["ApplicationServices"].ProviderName;        }        else        {            throw new ConfigurationErrorsException(_exNoConnectionStringFound);        }    }    private string GetMinutesInPastToDelete()    {        string strReturn = "-60";        if (null != System.Configuration.ConfigurationManager.AppSettings["MinutesInPastToDeletePageState"])        {            strReturn = System.Configuration.ConfigurationManager.AppSettings["MinutesInPastToDeletePageState"].ToString();        }        return (strReturn);    }}#endregion AppleiPhone.cs file: using System;using System.Collections.Generic;using System.Linq;using System.Web; /// <summary>/// Summary description for AppleIPhone/// </summary>public class AppleIPhone{ public AppleIPhone() {  //  // TODO: Add constructor logic here  // }     static public bool IsIPhoneOS()    {        return (IsIPad() || IsIPhone() || IsIPodTouch());    }     static public bool IsIPhone()    {        return IsTest("iPhone");    }     static public bool IsIPodTouch()    {        return IsTest("iPod");    }     static public bool IsIPad()    {        return IsTest("iPad");    }     static private bool IsTest(string Agent)    {        bool bl = false;        string ua = HttpContext.Current.Request.UserAgent.ToLower();        try        {            bl = ua.Contains(Agent.ToLower());        }        catch { }        return (bl);        }} Master page .cs: using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls; public partial class MasterPages_iPhoneMaster : System.Web.UI.MasterPage{    protected void Page_Load(object sender, EventArgs e)    {            HtmlHead head = Page.Header;            HtmlMeta meta = new HtmlMeta();            if (AppleIPhone.IsIPad() == true)            {                meta.Content = "width=400,user-scalable=no";                head.Controls.Add(meta);             }            else            {                meta.Content = "width=device-width, user-scalable=no";                meta.Attributes.Add("name", "viewport");            }            meta.Attributes.Add("name", "viewport");            head.Controls.Add(meta);            HtmlLink cssLink = new HtmlLink();            HtmlGenericControl script = new HtmlGenericControl("script");            script.Attributes.Add("type", "text/javascript");            script.Attributes.Add("src", ResolveUrl("~/Scripts/iWebKit/javascript/functions.js"));            head.Controls.Add(script);            cssLink.Attributes.Add("rel", "stylesheet");            cssLink.Attributes.Add("href", ResolveUrl("~/Scripts/iWebKit/css/style.css") );            cssLink.Attributes.Add("type", "text/css");            head.Controls.Add(cssLink);            HtmlGenericControl jsLink = new HtmlGenericControl("script");            //jsLink.Attributes.Add("type", "text/javascript");            //jsLink.Attributes.Add("src", ResolveUrl("~/Scripts/jquery-1.4.1.min.js") );            //head.Controls.Add(jsLink);            HtmlLink appleIcon = new HtmlLink();            appleIcon.Attributes.Add("rel", "apple-touch-icon");            appleIcon.Attributes.Add("href", ResolveUrl("~/apple-touch-icon.png"));            HtmlMeta appleMobileWebAppStatusBarStyle = new HtmlMeta();            appleMobileWebAppStatusBarStyle.Attributes.Add("name", "apple-mobile-web-app-status-bar-style");            appleMobileWebAppStatusBarStyle.Attributes.Add("content", "black");            head.Controls.Add(appleMobileWebAppStatusBarStyle);    }     internal string FindPath(string Location)    {        string Url = Server.MapPath(Location);        return (Url);    }}

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  • scorecardresearch dot com: weird tracking pixel

    - by Bobby Jack
    I'm seeing very weird behaviour in relation to this domain and a tracking image. On a specific page on our site, I'm seeing a script that's being added dynamically, apparently via flash (I wasn't even aware that flash could alter the DOM ...) That script is located at: http://scorecardresearch.com/beacon.js When I request that URL, I see a 1x1 gif. Another weird point is that this domain appears to break all the web-based whois tools; entering that domain results in a 1x1 gif. This is even to the extent where, if I enter scorecardresearch.com into the Title as part of this question, GIF code appears just below it! Hence, the "dot" in the title. The only 'unusual' thing on the page is a slideshare 'widget', which is flash-based - that's why I'm concluding that flash is altering the DOM. Anyone know what is going on here? How concerned should I be?

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  • jQuery 1.4 Opacity and IE Filters

    - by Rick Strahl
    Ran into a small problem today with my client side jQuery library after switching to jQuery 1.4. I ran into a problem with a shadow plugin that I use to provide drop shadows for absolute elements – for Mozilla WebKit browsers the –moz-box-shadow and –webkit-box-shadow CSS attributes are used but for IE a manual element is created to provide the shadow that underlays the original element along with a blur filter to provide the fuzziness in the shadow. Some of the key pieces are: var vis = el.is(":visible"); if (!vis) el.show(); // must be visible to get .position var pos = el.position(); if (typeof shEl.style.filter == "string") sh.css("filter", 'progid:DXImageTransform.Microsoft.Blur(makeShadow=true, pixelradius=3, shadowOpacity=' + opt.opacity.toString() + ')'); sh.show() .css({ position: "absolute", width: el.outerWidth(), height: el.outerHeight(), opacity: opt.opacity, background: opt.color, left: pos.left + opt.offset, top: pos.top + opt.offset }); This has always worked in previous versions of jQuery, but with 1.4 the original filter no longer works. It appears that applying the opacity after the original filter wipes out the original filter. IOW, the opacity filter is not applied incrementally, but absolutely which is a real bummer. Luckily the workaround is relatively easy by just switching the order in which the opacity and filter are applied. If I apply the blur after the opacity I get my correct behavior back with both opacity: sh.show() .css({ position: "absolute", width: el.outerWidth(), height: el.outerHeight(), opacity: opt.opacity, background: opt.color, left: pos.left + opt.offset, top: pos.top + opt.offset }); if (typeof shEl.style.filter == "string") sh.css("filter", 'progid:DXImageTransform.Microsoft.Blur(makeShadow=true, pixelradius=3, shadowOpacity=' + opt.opacity.toString() + ')'); While this works this still causes problems in other areas where opacity is implicitly set in code such as for fade operations or in the case of my shadow component the style/property watcher that keeps the shadow and main object linked. Both of these may set the opacity explicitly and that is still broken as it will effectively kill the blur filter. This seems like a really strange design decision by the jQuery team, since clearly the jquery css function does the right thing for setting filters. Internally however, the opacity setting doesn’t use .css instead hardcoding the filter which given jQuery’s usual flexibility and smart code seems really inappropriate. The following is from jQuery.js 1.4: var style = elem.style || elem, set = value !== undefined; // IE uses filters for opacity if ( !jQuery.support.opacity && name === "opacity" ) { if ( set ) { // IE has trouble with opacity if it does not have layout // Force it by setting the zoom level style.zoom = 1; // Set the alpha filter to set the opacity var opacity = parseInt( value, 10 ) + "" === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")"; var filter = style.filter || jQuery.curCSS( elem, "filter" ) || ""; style.filter = ralpha.test(filter) ? filter.replace(ralpha, opacity) : opacity; } return style.filter && style.filter.indexOf("opacity=") >= 0 ? (parseFloat( ropacity.exec(style.filter)[1] ) / 100) + "": ""; } You can see here that the style is explicitly set in code rather than relying on $.css() to assign the value resulting in the old filter getting wiped out. jQuery 1.32 looks a little different: // IE uses filters for opacity if ( !jQuery.support.opacity && name == "opacity" ) { if ( set ) { // IE has trouble with opacity if it does not have layout // Force it by setting the zoom level elem.zoom = 1; // Set the alpha filter to set the opacity elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) + (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")"); } return elem.filter && elem.filter.indexOf("opacity=") >= 0 ? (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '': ""; } Offhand I’m not sure why the latter works better since it too is assigning the filter. However, when checking with the IE script debugger I can see that there are actually a couple of filter tags assigned when using jQuery 1.32 but only one when I use jQuery 1.4. Note also that the jQuery 1.3 compatibility plugin for jQUery 1.4 doesn’t address this issue either. Resources ww.jquery.js (shadow plug-in $.fn.shadow) © Rick Strahl, West Wind Technologies, 2005-2010Posted in jQuery  

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  • Cross-Domain calls using JavaScript in SharePoint Apps

    - by Sahil Malik
    SharePoint, WCF and Azure Trainings: more information Sounds simple enough right? You’ve probably done $.ajax, and jsonp? Yeah all that doesn’t work in SharePoint. The main reason being, those calls need to work under the app’s credentials. So instead here is what a SharePoint app does, It downloads a file called ~hostweburl/_layouts/15/SPRequestExecutor.js. This file creates an IFrame in your page which then downloads a file called ~appweburl/_layouts/15/AppWebproxy.aspx Then all calls that look like the below, are routed via AppWebProxy and run on the server under the apps identity. 1: var executor = new SP.RequestExecutor(this.appweburl); 2: var url = this.appweburl + "/_api/SP.AppContextSite(@target)/web?" + "@target='" + this.hostweburl + Read full article ....

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  • Developing web apps using ASP.NET MVC 3, Razor and EF Code First - Part 1

    - by shiju
    In this post, I will demonstrate web application development using ASP. NET MVC 3, Razor and EF code First. This post will also cover Dependency Injection using Unity 2.0 and generic Repository and Unit of Work for EF Code First. The following frameworks will be used for this step by step tutorial. ASP.NET MVC 3 EF Code First CTP 5 Unity 2.0 Define Domain Model Let’s create domain model for our simple web application Category class public class Category {     public int CategoryId { get; set; }     [Required(ErrorMessage = "Name Required")]     [StringLength(25, ErrorMessage = "Must be less than 25 characters")]     public string Name { get; set;}     public string Description { get; set; }     public virtual ICollection<Expense> Expenses { get; set; } }   Expense class public class Expense {             public int ExpenseId { get; set; }            public string  Transaction { get; set; }     public DateTime Date { get; set; }     public double Amount { get; set; }     public int CategoryId { get; set; }     public virtual Category Category { get; set; } } We have two domain entities - Category and Expense. A single category contains a list of expense transactions and every expense transaction should have a Category. In this post, we will be focusing on CRUD operations for the entity Category and will be working on the Expense entity with a View Model object in the later post. And the source code for this application will be refactored over time. The above entities are very simple POCO (Plain Old CLR Object) classes and the entity Category is decorated with validation attributes in the System.ComponentModel.DataAnnotations namespace. Now we want to use these entities for defining model objects for the Entity Framework 4. Using the Code First approach of Entity Framework, we can first define the entities by simply writing POCO classes without any coupling with any API or database library. This approach lets you focus on domain model which will enable Domain-Driven Development for applications. EF code first support is currently enabled with a separate API that is runs on top of the Entity Framework 4. EF Code First is reached CTP 5 when I am writing this article. Creating Context Class for Entity Framework We have created our domain model and let’s create a class in order to working with Entity Framework Code First. For this, you have to download EF Code First CTP 5 and add reference to the assembly EntitFramework.dll. You can also use NuGet to download add reference to EEF Code First.    public class MyFinanceContext : DbContext {     public MyFinanceContext() : base("MyFinance") { }     public DbSet<Category> Categories { get; set; }     public DbSet<Expense> Expenses { get; set; }         }   The above class MyFinanceContext is derived from DbContext that can connect your model classes to a database. The MyFinanceContext class is mapping our Category and Expense class into database tables Categories and Expenses using DbSet<TEntity> where TEntity is any POCO class. When we are running the application at first time, it will automatically create the database. EF code-first look for a connection string in web.config or app.config that has the same name as the dbcontext class. If it is not find any connection string with the convention, it will automatically create database in local SQL Express database by default and the name of the database will be same name as the dbcontext class. You can also define the name of database in constructor of the the dbcontext class. Unlike NHibernate, we don’t have to use any XML based mapping files or Fluent interface for mapping between our model and database. The model classes of Code First are working on the basis of conventions and we can also use a fluent API to refine our model. The convention for primary key is ‘Id’ or ‘<class name>Id’.  If primary key properties are detected with type ‘int’, ‘long’ or ‘short’, they will automatically registered as identity columns in the database by default. Primary key detection is not case sensitive. We can define our model classes with validation attributes in the System.ComponentModel.DataAnnotations namespace and it automatically enforces validation rules when a model object is updated or saved. Generic Repository for EF Code First We have created model classes and dbcontext class. Now we have to create generic repository pattern for data persistence with EF code first. If you don’t know about the repository pattern, checkout Martin Fowler’s article on Repository Let’s create a generic repository to working with DbContext and DbSet generics. public interface IRepository<T> where T : class     {         void Add(T entity);         void Delete(T entity);         T GetById(long Id);         IEnumerable<T> All();     }   RepositoryBasse – Generic Repository class public abstract class RepositoryBase<T> where T : class { private MyFinanceContext database; private readonly IDbSet<T> dbset; protected RepositoryBase(IDatabaseFactory databaseFactory) {     DatabaseFactory = databaseFactory;     dbset = Database.Set<T>(); }   protected IDatabaseFactory DatabaseFactory {     get; private set; }   protected MyFinanceContext Database {     get { return database ?? (database = DatabaseFactory.Get()); } } public virtual void Add(T entity) {     dbset.Add(entity);            }        public virtual void Delete(T entity) {     dbset.Remove(entity); }   public virtual T GetById(long id) {     return dbset.Find(id); }   public virtual IEnumerable<T> All() {     return dbset.ToList(); } }   DatabaseFactory class public class DatabaseFactory : Disposable, IDatabaseFactory {     private MyFinanceContext database;     public MyFinanceContext Get()     {         return database ?? (database = new MyFinanceContext());     }     protected override void DisposeCore()     {         if (database != null)             database.Dispose();     } } Unit of Work If you are new to Unit of Work pattern, checkout Fowler’s article on Unit of Work . According to Martin Fowler, the Unit of Work pattern "maintains a list of objects affected by a business transaction and coordinates the writing out of changes and the resolution of concurrency problems." Let’s create a class for handling Unit of Work   public interface IUnitOfWork {     void Commit(); }   UniOfWork class public class UnitOfWork : IUnitOfWork {     private readonly IDatabaseFactory databaseFactory;     private MyFinanceContext dataContext;       public UnitOfWork(IDatabaseFactory databaseFactory)     {         this.databaseFactory = databaseFactory;     }       protected MyFinanceContext DataContext     {         get { return dataContext ?? (dataContext = databaseFactory.Get()); }     }       public void Commit()     {         DataContext.Commit();     } }   The Commit method of the UnitOfWork will call the commit method of MyFinanceContext class and it will execute the SaveChanges method of DbContext class.   Repository class for Category In this post, we will be focusing on the persistence against Category entity and will working on other entities in later post. Let’s create a repository for handling CRUD operations for Category using derive from a generic Repository RepositoryBase<T>.   public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository     {     public CategoryRepository(IDatabaseFactory databaseFactory)         : base(databaseFactory)         {         }                } public interface ICategoryRepository : IRepository<Category> { } If we need additional methods than generic repository for the Category, we can define in the CategoryRepository. Dependency Injection using Unity 2.0 If you are new to Inversion of Control/ Dependency Injection or Unity, please have a look on my articles at http://weblogs.asp.net/shijuvarghese/archive/tags/IoC/default.aspx. I want to create a custom lifetime manager for Unity to store container in the current HttpContext.   public class HttpContextLifetimeManager<T> : LifetimeManager, IDisposable {     public override object GetValue()     {         return HttpContext.Current.Items[typeof(T).AssemblyQualifiedName];     }     public override void RemoveValue()     {         HttpContext.Current.Items.Remove(typeof(T).AssemblyQualifiedName);     }     public override void SetValue(object newValue)     {         HttpContext.Current.Items[typeof(T).AssemblyQualifiedName] = newValue;     }     public void Dispose()     {         RemoveValue();     } }   Let’s create controller factory for Unity in the ASP.NET MVC 3 application. public class UnityControllerFactory : DefaultControllerFactory { IUnityContainer container; public UnityControllerFactory(IUnityContainer container) {     this.container = container; } protected override IController GetControllerInstance(RequestContext reqContext, Type controllerType) {     IController controller;     if (controllerType == null)         throw new HttpException(                 404, String.Format(                     "The controller for path '{0}' could not be found" +     "or it does not implement IController.",                 reqContext.HttpContext.Request.Path));       if (!typeof(IController).IsAssignableFrom(controllerType))         throw new ArgumentException(                 string.Format(                     "Type requested is not a controller: {0}",                     controllerType.Name),                     "controllerType");     try     {         controller= container.Resolve(controllerType) as IController;     }     catch (Exception ex)     {         throw new InvalidOperationException(String.Format(                                 "Error resolving controller {0}",                                 controllerType.Name), ex);     }     return controller; }   }   Configure contract and concrete types in Unity Let’s configure our contract and concrete types in Unity for resolving our dependencies.   private void ConfigureUnity() {     //Create UnityContainer               IUnityContainer container = new UnityContainer()                 .RegisterType<IDatabaseFactory, DatabaseFactory>(new HttpContextLifetimeManager<IDatabaseFactory>())     .RegisterType<IUnitOfWork, UnitOfWork>(new HttpContextLifetimeManager<IUnitOfWork>())     .RegisterType<ICategoryRepository, CategoryRepository>(new HttpContextLifetimeManager<ICategoryRepository>());                 //Set container for Controller Factory                ControllerBuilder.Current.SetControllerFactory(             new UnityControllerFactory(container)); }   In the above ConfigureUnity method, we are registering our types onto Unity container with custom lifetime manager HttpContextLifetimeManager. Let’s call ConfigureUnity method in the Global.asax.cs for set controller factory for Unity and configuring the types with Unity.   protected void Application_Start() {     AreaRegistration.RegisterAllAreas();     RegisterGlobalFilters(GlobalFilters.Filters);     RegisterRoutes(RouteTable.Routes);     ConfigureUnity(); }   Developing web application using ASP.NET MVC 3 We have created our domain model for our web application and also have created repositories and configured dependencies with Unity container. Now we have to create controller classes and views for doing CRUD operations against the Category entity. Let’s create controller class for Category Category Controller   public class CategoryController : Controller {     private readonly ICategoryRepository categoryRepository;     private readonly IUnitOfWork unitOfWork;           public CategoryController(ICategoryRepository categoryRepository, IUnitOfWork unitOfWork)     {         this.categoryRepository = categoryRepository;         this.unitOfWork = unitOfWork;     }       public ActionResult Index()     {         var categories = categoryRepository.All();         return View(categories);     }     [HttpGet]     public ActionResult Edit(int id)     {         var category = categoryRepository.GetById(id);         return View(category);     }       [HttpPost]     public ActionResult Edit(int id, FormCollection collection)     {         var category = categoryRepository.GetById(id);         if (TryUpdateModel(category))         {             unitOfWork.Commit();             return RedirectToAction("Index");         }         else return View(category);                 }       [HttpGet]     public ActionResult Create()     {         var category = new Category();         return View(category);     }           [HttpPost]     public ActionResult Create(Category category)     {         if (!ModelState.IsValid)         {             return View("Create", category);         }                     categoryRepository.Add(category);         unitOfWork.Commit();         return RedirectToAction("Index");     }       [HttpPost]     public ActionResult Delete(int  id)     {         var category = categoryRepository.GetById(id);         categoryRepository.Delete(category);         unitOfWork.Commit();         var categories = categoryRepository.All();         return PartialView("CategoryList", categories);       }        }   Creating Views in Razor Now we are going to create views in Razor for our ASP.NET MVC 3 application.  Let’s create a partial view CategoryList.cshtml for listing category information and providing link for Edit and Delete operations. CategoryList.cshtml @using MyFinance.Helpers; @using MyFinance.Domain; @model IEnumerable<Category>      <table>         <tr>         <th>Actions</th>         <th>Name</th>          <th>Description</th>         </tr>     @foreach (var item in Model) {             <tr>             <td>                 @Html.ActionLink("Edit", "Edit",new { id = item.CategoryId })                 @Ajax.ActionLink("Delete", "Delete", new { id = item.CategoryId }, new AjaxOptions { Confirm = "Delete Expense?", HttpMethod = "Post", UpdateTargetId = "divCategoryList" })                           </td>             <td>                 @item.Name             </td>             <td>                 @item.Description             </td>         </tr>          }       </table>     <p>         @Html.ActionLink("Create New", "Create")     </p> The delete link is providing Ajax functionality using the Ajax.ActionLink. This will call an Ajax request for Delete action method in the CategoryCotroller class. In the Delete action method, it will return Partial View CategoryList after deleting the record. We are using CategoryList view for the Ajax functionality and also for Index view using for displaying list of category information. Let’s create Index view using partial view CategoryList  Index.chtml @model IEnumerable<MyFinance.Domain.Category> @{     ViewBag.Title = "Index"; }    <h2>Category List</h2>    <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>    <div id="divCategoryList">               @Html.Partial("CategoryList", Model) </div>   We can call the partial views using Html.Partial helper method. Now we are going to create View pages for insert and update functionality for the Category. Both view pages are sharing common user interface for entering the category information. So I want to create an EditorTemplate for the Category information. We have to create the EditorTemplate with the same name of entity object so that we can refer it on view pages using @Html.EditorFor(model => model) . So let’s create template with name Category. Let’s create view page for insert Category information   @model MyFinance.Domain.Category   @{     ViewBag.Title = "Save"; }   <h2>Create</h2>   <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>   @using (Html.BeginForm()) {     @Html.ValidationSummary(true)     <fieldset>         <legend>Category</legend>                @Html.EditorFor(model => model)               <p>             <input type="submit" value="Create" />         </p>     </fieldset> }   <div>     @Html.ActionLink("Back to List", "Index") </div> ViewStart file In Razor views, we can add a file named _viewstart.cshtml in the views directory  and this will be shared among the all views with in the Views directory. The below code in the _viewstart.cshtml, sets the Layout page for every Views in the Views folder.      @{     Layout = "~/Views/Shared/_Layout.cshtml"; }   Source Code You can download the source code from http://efmvc.codeplex.com/ . The source will be refactored on over time.   Summary In this post, we have created a simple web application using ASP.NET MVC 3 and EF Code First. We have discussed on technologies and practices such as ASP.NET MVC 3, Razor, EF Code First, Unity 2, generic Repository and Unit of Work. In my later posts, I will modify the application and will be discussed on more things. Stay tuned to my blog  for more posts on step by step application building.

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  • Figuring out the IIS Version for a given OS in .NET Code

    - by Rick Strahl
    Here's an odd requirement: I need to figure out what version of IIS is available on a given machine in order to take specific configuration actions when installing an IIS based application. I build several configuration tools for application configuration and installation and depending on which version of IIS is available on IIS different configuration paths are taken. For example, when dealing with XP machine you can't set up an Application Pool for an application because XP (IIS 5.1) didn't support Application pools. Configuring 32 and 64 bit settings are easy in IIS 7 but this didn't work in prior versions and so on. Along the same lines I saw a question on the AspInsiders list today, regarding a similar issue where somebody needed to know the IIS version as part of an ASP.NET application prior to when the Request object is available. So it's useful to know which version of IIS you can possibly expect. This should be easy right? But it turns there's no real easy way to detect IIS on a machine. There's no registry key that gives you the full version number - you can detect installation but not which version is installed. The easiest way: Request.ServerVariables["SERVER_SOFTWARE"] The easiest way to determine IIS version number is if you are already running inside of ASP.NET and you are inside of an ASP.NET request. You can look at Request.ServerVariables["SERVER_SOFTWARE"] to get a string like Microsoft-IIS/7.5 returned to you. It's a cinch to parse this to retrieve the version number. This works in the limited scenario where you need to know the version number inside of a running ASP.NET application. Unfortunately this is not a likely use case, since most times when you need to know a specific version of IIS when you are configuring or installing your application. The messy way: Match Windows OS Versions to IIS Versions Since Version 5.x of IIS versions of IIS have always been tied very closely to the Operating System. Meaning the only way to get a specific version of IIS was through the OS - you couldn't install another version of IIS on the given OS. Microsoft has a page that describes the OS version to IIS version relationship here: http://support.microsoft.com/kb/224609 In .NET you can then sniff the OS version and based on that return the IIS version. The following is a small utility function that accomplishes the task of returning an IIS version number for a given OS: /// <summary> /// Returns the IIS version for the given Operating System. /// Note this routine doesn't check to see if IIS is installed /// it just returns the version of IIS that should run on the OS. /// /// Returns the value from Request.ServerVariables["Server_Software"] /// if available. Otherwise uses OS sniffing to determine OS version /// and returns IIS version instead. /// </summary> /// <returns>version number or -1 </returns> public static decimal GetIisVersion() { // if running inside of IIS parse the SERVER_SOFTWARE key // This would be most reliable if (HttpContext.Current != null && HttpContext.Current.Request != null) { string os = HttpContext.Current.Request.ServerVariables["SERVER_SOFTWARE"]; if (!string.IsNullOrEmpty(os)) { //Microsoft-IIS/7.5 int dash = os.LastIndexOf("/"); if (dash > 0) { decimal iisVer = 0M; if (Decimal.TryParse(os.Substring(dash + 1), out iisVer)) return iisVer; } } } decimal osVer = (decimal) Environment.OSVersion.Version.Major + ((decimal) Environment.OSVersion.Version.MajorRevision / 10); // Windows 7 and Win2008 R2 if (osVer == 6.1M) return 7.5M; // Windows Vista and Windows 2008 else if (osVer == 6.0M) return 7.0M; // Windows 2003 and XP 64 bit else if (osVer == 5.2M) return 6.0M; // Windows XP else if (osVer == 5.1M) return 5.1M; // Windows 2000 else if (osVer == 5.0M) return 5.0M; // error result return -1M; } } Talk about a brute force apporach, but it works. This code goes only back to IIS 5 - anything before that is not something you possibly would want to have running. :-) Note that this is updated through Windows 7/Windows Server 2008 R2. Later versions will need to be added as needed. Anybody know what the Windows Version number of Windows 8 is?© Rick Strahl, West Wind Technologies, 2005-2011Posted in ASP.NET  IIS   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • When should JavaScript generate HTML?

    - by VirtuosiMedia
    I try to generate as little HTML from JavaScript as possible. Instead, I prefer to manipulate existing markup whenever I can and only generate HTML when I need to dynamically insert an element that isn't a good candidate for using Ajax. This, I believe, makes it far easier to maintain the code and quickly make changes to it because the markup is easier to read and trace. My rule of thumb is: HTML is for document structure, CSS is for presentation, JavaScript is for behavior. However, I've seen a lot of JS code that generates mounds of HTML, including entire forms and content-heavy modal dialogs. In general, which method is considered best practice? In what circumstances should JavaScript be used to generate HTML and when should it not?

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  • Getting a Web Resource Url in non WebForms Applications

    - by Rick Strahl
    WebResources in ASP.NET are pretty useful feature. WebResources are resources that are embedded into a .NET assembly and can be loaded from the assembly via a special resource URL. WebForms includes a method on the ClientScriptManager (Page.ClientScript) and the ScriptManager object to retrieve URLs to these resources. For example you can do: ClientScript.GetWebResourceUrl(typeof(ControlResources), ControlResources.JQUERY_SCRIPT_RESOURCE); GetWebResourceUrl requires a type (which is used for the assembly lookup in which to find the resource) and the resource id to lookup. GetWebResourceUrl() then returns a nasty old long URL like this: WebResource.axd?d=-b6oWzgbpGb8uTaHDrCMv59VSmGhilZP5_T_B8anpGx7X-PmW_1eu1KoHDvox-XHqA1EEb-Tl2YAP3bBeebGN65tv-7-yAimtG4ZnoWH633pExpJor8Qp1aKbk-KQWSoNfRC7rQJHXVP4tC0reYzVw2&t=634533278261362212 While lately excessive resource usage has been frowned upon especially by MVC developers who tend to opt for content distributed as files, I still think that Web Resources have their place even in non-WebForms applications. Also if you have existing assemblies that include resources like scripts and common image links it sure would be nice to access them from non-WebForms pages like MVC views or even in plain old Razor Web Pages. Where's my Page object Dude? Unfortunately natively ASP.NET doesn't have a mechanism for retrieving WebResource Urls outside of the WebForms engine. It's a feature that's specifically baked into WebForms and that relies specifically on the Page HttpHandler implementation. Both Page.ClientScript (obviously) and ScriptManager rely on a hosting Page object in order to work and the various methods off these objects require control instances passed. The reason for this is that the script managers can inject scripts and links into Page content (think RegisterXXXX methods) and for that a Page instance is required. However, for many other methods - like GetWebResourceUrl() - that simply return resources or resource links the Page reference is really irrelevant. While there's a separate ClientScriptManager class, it's marked as sealed and doesn't have any public constructors so you can't create your own instance (without Reflection). Even if it did the internal constructor it does have requires a Page reference. No good… So, can we get access to a WebResourceUrl generically without running in a WebForms Page instance? We just have to create a Page instance ourselves and use it internally. There's nothing intrinsic about the use of the Page class in ClientScript, at least for retrieving resources and resource Urls so it's easy to create an instance of a Page for example in a static method. For our needs of retrieving ResourceUrls or even actually retrieving script resources we can use a canned, non-configured Page instance we create on our own. The following works just fine: public static string GetWebResourceUrl(Type type, string resource ) { Page page = new Page(); return page.ClientScript.GetWebResourceUrl(type, resource); } A slight optimization for this might be to cache the created Page instance. Page tends to be a pretty heavy object to create each time a URL is required so you might want to cache the instance: public class WebUtils { private static Page CachedPage { get { if (_CachedPage == null) _CachedPage = new Page(); return _CachedPage; } } private static Page _CachedPage; public static string GetWebResourceUrl(Type type, string resource) { return CachedPage.ClientScript.GetWebResourceUrl(type, resource); } } You can now use GetWebResourceUrl in a Razor page like this: <!DOCTYPE html> <html <head> <script src="@WebUtils.GetWebResourceUrl(typeof(ControlResources),ControlResources.JQUERY_SCRIPT_RESOURCE)"> </script> </head> <body> <div class="errordisplay"> <img src="@WebUtils.GetWebResourceUrl(typeof(ControlResources),ControlResources.WARNING_ICON_RESOURCE)" /> This is only a Test! </div> </body> </html> And voila - there you have WebResources served from a non-Page based application. WebResources may be a on the way out, but legacy apps have them embedded and for some situations, like fallback scripts and some common image resources I still like to use them. Being able to use them from non-WebForms applications should have been built into the core ASP.NETplatform IMHO, but seeing that it's not this workaround is easy enough to implement.© Rick Strahl, West Wind Technologies, 2005-2011Posted in ASP.NET  MVC   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • OTN Developer Day: Oracle Database 11g Application Development

    - by stephen.garth
    When and Where: Tuesday June 15, 2010 from 8:00 am - 5:30 pm Hyatt Regency Reston, Reston VA This full-day FREE event offers a great learning and networking opportunity. With support from Oracle database application development experts, you'll get valuable hands-on experience developing database-backed apps with the latest Oracle tools and frameworks. Oh yeah, you get to use your own notebook and download some cool and very useful materials. Find out more and register here. var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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