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  • Problem with a recursive function to find sqrt of a number

    - by Eternal Learner
    Below is a simple program which computes sqrt of a number using Bisection. While executing this with a call like sqrtr(4,1,4) in goes into an endless recursion . I am unable to figure out why this is happening. Below is the function : double sqrtr(double N , double Low ,double High ) { double value = 0.00; double mid = (Low + High + 1)/2; if(Low == High) { value = High; } else if (N < mid * mid ) { value = sqrtr(N,Low,mid-1) ; } else if(N >= mid * mid) { value = sqrtr(N,mid,High) ; } return value; }

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  • Compiler error while compiling the RAPID library on VS2008

    - by Demi
    I've downloaded the RAPID library and tried to compile it on Microsoft Visual Studio 2008. However, I'm getting the following compiler error: C4430 missing type specifier - int assumed. Note: C++ does not support default-int at this code segment (the exact line that produces the error is int flag): class RAPID_model { public: box *b; int num_boxes_alloced; tri *tris; int num_tris; int num_tris_alloced; int build_state; int build_hierarchy(); friend RAPID_Collide(double R1[3][3], double T1[3], double s1, RAPID_model *RAPID_model1, double R2[3][3], double T2[3], double s2, RAPID_model *RAPID_model2, int flag); Can anyone please help me with this? Thank you

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  • Intersection between sets containing different types of variables

    - by Gacek
    Let's assume we have two collections: List<double> values List<SomePoint> points where SomePoint is a type containing three coordinates of the point: SomePoint { double X; double Y; double Z; } Now, I would like to perform the intersection between these two collections to find out for which points in points the z coordinate is eqal to one of the elements of values I created something like that: HashSet<double> hash = new HashSet<double>(points.Select(p=>p.Z)); hash.IntersectWith(values); var result = new List<SomePoints>(); foreach(var h in hash) result.Add(points.Find(p => p.Z == h)); But it won't return these points for which there is the same Z value, but different X and Y. Is there any better way to do it?

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  • Linkage of namespace functions

    - by user144182
    I have a couple of methods declared at the namespace level within a header for a class: // MyClass.h namespace network { int Method1(double d); int Method2(double d); class MyClass { //... } } then defined in //MyClass.cpp int Method1(double d) { ... } int Method2(double d) { ... } This project compiles cleanly and is a dependency for a ui project which uses MyClass. The functions were previously member functions of MyClass, but were moved to namespace since it was more appropriate. My problem is the ui project complains when it gets to the linker: 1network.lib(MyClass.obj) : error LNK2001: unresolved external symbol "int __cdecl network::Method1(double)" (?INT@ds@sim@@YAHN@Z) 1network.lib(MyClass.obj) : error LNK2001: unresolved external symbol "int __cdecl network::Method2(double)" (?CINT@ds@sim@@YAHN@Z) What am I doing wrong?

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  • excplicitly casting constness in

    - by jimifiki
    With the following code void TestF(const double ** testv){;} void callTest(){ double** test; TestF(test); } I get this: error C2664: 'TestF' : cannot convert parameter 1 from 'double **' to 'const double **' I cannot understand why. Why test cannot be silently casted to const double**? Why should I do it explicitly? I know that TestF(const_cast<const double**>(test)) makes my code correct, but I feel this should be unnecessary. Are there some key concepts about const that I'm missing?

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  • Comparing char for validation in C++

    - by Corey Starbird
    /* PROGRAM: Ch6_14.cpp Written by Corey Starbird This program calculates the balance owed to a hospital for a patient. Last modified: 10/28/13 */ #include <iostream> #include <fstream> #include <iomanip> #include <string> using namespace std; // Prototypes for In-patient and Out-patient functions. double stayTotal (int, double, double, double); // For In-patients double stayTotal (double, double); // For Out-patients int main() { char patientType; // In-patient (I or i) or Out-patient (O or o) double rate, // Daily rate for the In-patient stay servCharge, // Service charge for the stay medCharge, // Medication charge for the stay inTotal, // Total for the In-patient stay outTotal; // Total for the Out-patient stay int days; // Number of days for the In-patient stay // Find out if they were an In-patient or an Out-patient cout << "Welcome, please enter (I) for an In-patient or (O) for an Out-patient:" << endl; cin >> patientType; while (patientType != 'I' || 'i' || 'O' || 'o') { cout << "Invalid entry. Please enter either (I) for an In-patient or (O) for an Out-patient:" << endl; cin >> patientType; } cout << "FIN"; return 0; } Hey, brand new to C++ here. I am working on a project and I'm having trouble figuring out why my validation for patientTypeisn't working properly. I first had double quotes, but realized that would denote strings. I changed them to single quotes, my program will compile and run now, but the while loop runs no matter what I enter, I, i, O, o, or anything else. I don't know why the while loop isn't checking the condition, seeing that I did enter one of the characters in the condition, and move on to cout. Probably a simple mistake, but I thank you in advance.

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  • Where to declare variable? C#

    - by user1303781
    I am trying to make an average function... 'Total' adds them, then 'Total' is divided by n, the number of entries... No matter where I put 'double Total;', I get an error message. In this example I get... Use of unassigned local variable 'Total' If I put it before the comment, both references show up as error... I'm sure it's something simple..... namespace frmAssignment3 { class StatisticalFunctions { public static class Statistics { //public static double Average(List<MachineData.MachineRecord> argMachineDataList) public static double Average(List<double> argMachineDataList) { double Total; int n; for (n = 1; n <= argMachineDataList.Count; n++) { Total = argMachineDataList[n]; } return Total / n; } public static double StDevSample(List<MachineData.MachineRecord> argMachineDataList) { return -1; } } } }

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  • Mysql: Disk is full writing

    - by elma
    Hi there, I'm having some problems with my mysql server lately, so I've decided to check the error logs: [root@LSN-D1179 log]# tail -10 mysqld.log 100325 19:30:03 [ERROR] /usr/libexec/mysqld: Table './lfe/actions' is marked as crashed and should be repaired 100325 19:30:03 [ERROR] /usr/libexec/mysqld: Table './lfe/actions' is marked as crashed and should be repaired 100325 19:30:18 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_task_logs.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:34:34 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_profile_portal_views.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:39:46 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_posts.TMD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:40:18 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_task_logs.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:44:34 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_profile_portal_views.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:49:46 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_posts.TMD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:50:18 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_task_logs.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs 100325 19:54:34 [ERROR] /usr/libexec/mysqld: Disk is full writing './omuz/ibf_profile_portal_views.MYD' (Errcode: 122). Waiting for someone to free space... Retry in 60 secs And here's is my df -h output [root@LSN-D1179 log]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 143G 6.2G 129G 5% / /dev/sda1 99M 12M 83M 13% /boot tmpfs 490M 0 490M 0% /dev/shm As you can see, I have plenty of free space; so I couldn't figure out these "Disk is full" errors in mysqld.log. Does anyone know what should I do to fix this? Ugur

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  • PDF to HTML - batch converter - most reliable and accurate free AND paid for software?

    - by therobyouknow
    I'm look for either a free or paid-for (about 50$/40pounds) BATCH PDF to HTML converter to convert several PDF files at once. Needs to be able to handle vectored and bitmap images within the file, outputting both as jpegs referenced by the html pages. I've tried iorigsoft paid-for PDF to HTML - problems it seems to hang or just go idle, and the stuff it actually converts have broken links - the wrong name is used for constituent chapters as html. Also tried application from intrapdf.com but this crashes near the beginning of the conversion, consitently. Update: intrapdf works on my Windows XP machine but not on my Windows 7 machine. The only glitch is with the framed index contents html - the graphics in the page do not display in the page in the frame - but if you open the frame only in a new tab then you can see them. That might be a browser glitch in chrome only. This solution is good enough for me - given that I've already spent the money (I had spent before I asked) but I can't accept my own answer as this does not work on Windows 7. Looked at opensource tools but they look equally flakey or use old PDF versions. Need it on Windows 7 32bit home. Thoughts?

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  • Is there any free software to check for issues with a DVD drive?

    - by AgentConundrum
    I don't usually play movies on my laptop (prefer the standalone with the tv), but I tried to watch one the other night, and noticed playback was really choppy and had audio artifacts in places. I thought it could be related to memory issues so I rebooted and tried again, but the results were the same. I considered that it could be an issue with the disc, so I tried to clean it but again there was no change. I don't think the problem is with the disc, because I tried another disc and it also had the same problem. I don't think I've ever watched the second disc since I've had it, so it should have been safe in its jewel case. Also, there were no issues when I watched an episode off the first disc in my standalone player. What I'm wondering is: are there are any (free) utilities that can check for issues with the drive itself? I looked around but most of the software I found focuses on integrity checks for the disc, not the drive. I have had issues with this laptop recently (had to replace the keyboard when the cat damaged it while I was cleaning dust out and the machine was ripped apart, also replaced part of the chassis after I cracked it when I tried to open it not knowing a screw was still in it) so I may have just replaced the drive incorrectly. I'm going to check on this while I await an answer to this question. Thanks.

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  • Is there a free PDF printer / distiller that creates signable documents?

    - by Coderer
    I've used various methods (mentioned elsewhere on this site) to create PDFs, using a printer driver or converting from PostScript, etc. The common problem is that if I open any of the output files in the newer versions of Adobe Reader, there's an option to "Place Signature" but it's greyed out, or gives an error message that the feature has been disabled for this document. As far as I can tell, there's an option set somewhere in the document metadata that tells Reader "allow the user to sign this document", or don't. None of the free/open source tools that have been been linked to in other SU posts have had this listed as an option (though to be fair I haven't actually downloaded and tried all of them). Is there a tool that does this? Can I just poke a bit with a hex editor somewhere to turn on this functionality? I can sometimes get access to Acrobat Professional to turn on this option, but doing it for every desired case would be more work than I care to do. The current workaround for single-page documents is: Print the document to PDF (possibly via postscript) Open a single-page blank PDF with the "signable" bit turned on in Reader create a custom "stamp" using the Reader markup tools, by importing the printed-to document "stamp" an image of the printed document on the blank page, hoping to get it centered about right place a signature over the document-but-not-really you just stamped This obviously does not scale well at all. It would be much better if I could: Print the document to PDF Drag the document to a simple shortcut / tool / whatever Open the document in Reader Place a signature in the document ETA: Sorry, maybe I should have been clearer -- I'm talking about the certificate-based digital signing available in Adobe Reader, not adding a virtual ink signature. Also, any solution really would have to be available offline.

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  • How can I store logs and meet compliance requirements for free?

    - by Martin
    I am trying to keep long-term logs of an app in such a way, that it could plausibly demonstrated to third parties/court that the application has processed certain data at a given time. The data can be represented in XML or text format. A simple gzipped log is not plausible, as I may have added or modified data afterwards, whereas an external logging service would be an overkill. Cost is an issue, we are not dealing with financial data or so, but rather some simple user generated content, where some malicious users tried to blame the operator in the past when things escalated and went to court. My question: Is there some kind of signing software for Linux that signs each element of a log in such a way, that it can be easily shown that no element can be added or modified afterwards? Plug-Ins into some free Splunk Alternatives would be fine too. Ideally the software I am looking for should be under a GPL or similar license. I could probably achive something like this by using PGP/GPG sgning functions and including the previous elements signituares within the following element, but I would prefer to use some program where you do not have to argue about the validity of your own code. Note to mods: I am not asking this question on Stackoverflow, because I am not looking for writing own code for reasons described above. I think this question rather fits into serverfault than superuser, as server-side logging software is discussed rather here than on superuser.

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  • Has anyone had luck running 802.1x over ethernet using the stock Windows or other free supplicant?

    - by maxxpower
    I just wanted to see if anyone else has had luck implementing 802.1x over ethernet. So here's my basic setup. Switch sends out 3 eapol messages spaced out 5 seconds apart. if there's no response the machine gets put on a guest vlan with restricted access. If the machine is properly configured it will authenticate and be placed into a secure vlan. About 10% of my windows xp users are getting self assigned 169 addresses. I've used the Odyssey Access Client and it worked without a hitch. I'm using the setting to automatically use the users windows login to authenticate, but it's workign on 90% of the machines so I don't think that's the issue. Checking the logs on the dc it seems that the machines are trying to authenticate with computer credentials even though they are configured not to. I'm running Juniper switches with IAS for radius. I have radius configured for PEAP and MSvhapv2. Macs and linux boxes seem to have no issues authenticating. One last thing to add If I unplugging the ethernet cable and plug it back in usually resolves the issue, but I'd hardly call that acceptable for production. Kinda long winded and specific for a discussion, but just want to see if anyone else has had similar issues or experiences, or if anyone knows of a free XP supplicant that actually works with 802.1x over ethernet.

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  • How to reduce memory consumption an AWS EC2 t1.micro instance (free tier) ubuntu server 14.04 LTS EBS

    - by CMPSoares
    Hi I'm working on my bachelor thesis and for that I need to host a node.js web application on AWS, in order to avoid costs I'm using a t1.micro instance with 30GB disk space (from what I know it's the maximum I get in the free tier) which is barely used. But instead I have problems with memory consumption, it's using all of it. I tried the approach of creating a virtual swap area as mentioned at Why don't EC2 ubuntu images have swap? with these commands: sudo dd if=/dev/zero of=/var/swapfile bs=1M count=2048 && sudo chmod 600 /var/swapfile && sudo mkswap /var/swapfile && echo /var/swapfile none swap defaults 0 0 | sudo tee -a /etc/fstab && sudo swapon -a But this swap area isn't used somehow. Is something missing in this approach or is there another process of reducing the memory consumption in these type of AWS instances? Bottom-line: This originates server freezes and crashes and that's what I want to stop either by using the swap, reducing memory usage or both.

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  • Which free RDBMS is best for small in-house development?

    - by Nic Waller
    I am the sole sysadmin for a small firm of about 50 people, and I have been asked to develop an in-house application for tracking job completion and providing reports based on that data. I'm planning on building it as a web application. I have roughly equal experience developing for MySQL, PostgreSQL, and MSSQL. We are primarily a Windows-based shop, but I'm fairly comfortable with both Windows and Linux system administration. These are my two biggest concerns: Ease of managability. I don't expect to be maintaining this database forever. For the sake of the person that eventually has to take over for me, which database has the lowest barrier to entry? Data integrity. This means transaction-safe, robust storage, and easy backup/recovery. Even better if the database can be easily replicated. There is not a lot of budget for this project, so I am restricted to working with one of the free database systems mentioned above. What would you choose?

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  • Benchmark MySQL Cluster using flexAsynch: No free node id found for mysqld(API)?

    - by quanta
    I am going to benchmark MySQL Cluster using flexAsynch follow this guide, details as below: mkdir /usr/local/mysqlc732/ cd /usr/local/src/mysql-cluster-gpl-7.3.2 cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysqlc732/ -DWITH_NDB_TEST=ON make make install Everything works fine until this step: # /usr/local/mysqlc732/bin/flexAsynch -t 1 -p 80 -l 2 -o 100 -c 100 -n FLEXASYNCH - Starting normal mode Perform benchmark of insert, update and delete transactions 1 number of concurrent threads 80 number of parallel operation per thread 100 transaction(s) per round 2 iterations Load Factor is 80% 25 attributes per table 1 is the number of 32 bit words per attribute Tables are with logging Transactions are executed with hint provided No force send is used, adaptive algorithm used Key Errors are disallowed Temporary Resource Errors are allowed Insufficient Space Errors are disallowed Node Recovery Errors are allowed Overload Errors are allowed Timeout Errors are allowed Internal NDB Errors are allowed User logic reported Errors are allowed Application Errors are disallowed Using table name TAB0 NDBT_ProgramExit: 1 - Failed ndb_cluster.log: WARNING -- Failed to allocate nodeid for API at 127.0.0.1. Returned eror: 'No free node id found for mysqld(API).' I also have recompiled with -DWITH_DEBUG=1 -DWITH_NDB_DEBUG=1. How can I run flexAsynch in the debug mode? # /usr/local/mysqlc732/bin/flexAsynch -h FLEXASYNCH Perform benchmark of insert, update and delete transactions Arguments: -t Number of threads to start, default 1 -p Number of parallel transactions per thread, default 32 -o Number of transactions per loop, default 500 -l Number of loops to run, default 1, 0=infinite -load_factor Number Load factor in index in percent (40 -> 99) -a Number of attributes, default 25 -c Number of operations per transaction -s Size of each attribute, default 1 (PK is always of size 1, independent of this value) -simple Use simple read to read from database -dirty Use dirty read to read from database -write Use writeTuple in insert and update -n Use standard table names -no_table_create Don't create tables in db -temp Create table(s) without logging -no_hint Don't give hint on where to execute transaction coordinator -adaptive Use adaptive send algorithm (default) -force Force send when communicating -non_adaptive Send at a 10 millisecond interval -local 1 = each thread its own node, 2 = round robin on node per parallel trans 3 = random node per parallel trans -ndbrecord Use NDB Record -r Number of extra loops -insert Only run inserts on standard table -read Only run reads on standard table -update Only run updates on standard table -delete Only run deletes on standard table -create_table Only run Create Table of standard table -drop_table Only run Drop Table on standard table -warmup_time Warmup Time before measurement starts -execution_time Execution Time where measurement is done -cooldown_time Cooldown time after measurement completed -table Number of standard table, default 0

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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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  • Default /etc/apt/sources.list?

    - by piemesons
    I need default source list for ubuntu 10.04. Can anybody help me? Here is Mine:--- Ubuntu supported packages deb http://archive.ubuntu.com/ubuntu/ lucid main restricted multiverse universe deb http://archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ lucid-updates main restricted multiverse universe deb http://security.ubuntu.com/ubuntu lucid-security main restricted universe multiverse deb http://security.ubuntu.com/ubuntu lucid-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ lucid main restricted multiverse universe deb-src http://archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ lucid-updates main restricted multiverse universe deb-src http://security.ubuntu.com/ubuntu lucid-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu lucid-proposed main restricted universe multiverse Canonical Commercial Repository deb http://archive.canonical.com/ubuntu lucid partner deb http://archive.canonical.com/ubuntu lucid-backports partner deb http://archive.canonical.com/ubuntu lucid-updates partner deb http://archive.canonical.com/ubuntu lucid-security partner deb http://archive.canonical.com/ubuntu lucid-proposed partner deb-src http://archive.canonical.com/ubuntu lucid partner deb-src http://archive.canonical.com/ubuntu lucid-backports partner deb-src http://archive.canonical.com/ubuntu lucid-updates partner deb-src http://archive.canonical.com/ubuntu lucid-security partner deb-src http://archive.canonical.com/ubuntu lucid-proposed partner medibuntu deb http://packages.medibuntu.org/ lucid free non-free deb-src http://packages.medibuntu.org/ lucid free non-free PlayOnLinux deb http://deb.playonlinux.com/ lucid main opera deb http://deb.opera.com/opera/ lenny non-free google deb http://dl.google.com/linux/deb/ stable non-free main Dropbox Official Source deb http://linux.dropbox.com/ubuntu karmic main Skype deb http://download.skype.com/linux/repos/debian/ stable non-free This is the error i am getting:-- (sudo apt-get update) Get:9 http://dl.google.com stable/main Packages [1,076B] Err http://ppa.launchpad.net lucid/main Packages 404 Not Found Get:10 http://dl.google.com stable/main Packages [735B] and finally :-- Fetched 9,724B in 3s (2,645B/s) W: Failed to fetch http://ppa.launchpad.net/bisig/ppa/ubuntu/dists/lucid/main/binary-i386/Packages.gz 404 Not Found E: Some index files failed to download, they have been ignored, or old ones used instead.

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  • PPA causing 404 error?

    - by piemesons
    I need default source list for ubuntu 10.04. Can anybody help me? Here is Mine:--- Ubuntu supported packages deb http://archive.ubuntu.com/ubuntu/ lucid main restricted multiverse universe deb http://archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ lucid-updates main restricted multiverse universe deb http://security.ubuntu.com/ubuntu lucid-security main restricted universe multiverse deb http://security.ubuntu.com/ubuntu lucid-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ lucid main restricted multiverse universe deb-src http://archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ lucid-updates main restricted multiverse universe deb-src http://security.ubuntu.com/ubuntu lucid-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu lucid-proposed main restricted universe multiverse Canonical Commercial Repository deb http://archive.canonical.com/ubuntu lucid partner deb http://archive.canonical.com/ubuntu lucid-backports partner deb http://archive.canonical.com/ubuntu lucid-updates partner deb http://archive.canonical.com/ubuntu lucid-security partner deb http://archive.canonical.com/ubuntu lucid-proposed partner deb-src http://archive.canonical.com/ubuntu lucid partner deb-src http://archive.canonical.com/ubuntu lucid-backports partner deb-src http://archive.canonical.com/ubuntu lucid-updates partner deb-src http://archive.canonical.com/ubuntu lucid-security partner deb-src http://archive.canonical.com/ubuntu lucid-proposed partner medibuntu deb http://packages.medibuntu.org/ lucid free non-free deb-src http://packages.medibuntu.org/ lucid free non-free PlayOnLinux deb http://deb.playonlinux.com/ lucid main opera deb http://deb.opera.com/opera/ lenny non-free google deb http://dl.google.com/linux/deb/ stable non-free main Dropbox Official Source deb http://linux.dropbox.com/ubuntu karmic main Skype deb http://download.skype.com/linux/repos/debian/ stable non-free This is the error i am getting:-- (sudo apt-get update) Get:9 http://dl.google.com stable/main Packages [1,076B] Err http://ppa.launchpad.net lucid/main Packages 404 Not Found Get:10 http://dl.google.com stable/main Packages [735B] and finally :-- Fetched 9,724B in 3s (2,645B/s) W: Failed to fetch http://ppa.launchpad.net/bisig/ppa/ubuntu/dists/lucid/main/binary-i386/Packages.gz 404 Not Found E: Some index files failed to download, they have been ignored, or old ones used instead.

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  • Parallelism in .NET – Part 6, Declarative Data Parallelism

    - by Reed
    When working with a problem that can be decomposed by data, we have a collection, and some operation being performed upon the collection.  I’ve demonstrated how this can be parallelized using the Task Parallel Library and imperative programming using imperative data parallelism via the Parallel class.  While this provides a huge step forward in terms of power and capabilities, in many cases, special care must still be given for relative common scenarios. C# 3.0 and Visual Basic 9.0 introduced a new, declarative programming model to .NET via the LINQ Project.  When working with collections, we can now write software that describes what we want to occur without having to explicitly state how the program should accomplish the task.  By taking advantage of LINQ, many operations become much shorter, more elegant, and easier to understand and maintain.  Version 4.0 of the .NET framework extends this concept into the parallel computation space by introducing Parallel LINQ. Before we delve into PLINQ, let’s begin with a short discussion of LINQ.  LINQ, the extensions to the .NET Framework which implement language integrated query, set, and transform operations, is implemented in many flavors.  For our purposes, we are interested in LINQ to Objects.  When dealing with parallelizing a routine, we typically are dealing with in-memory data storage.  More data-access oriented LINQ variants, such as LINQ to SQL and LINQ to Entities in the Entity Framework fall outside of our concern, since the parallelism there is the concern of the data base engine processing the query itself. LINQ (LINQ to Objects in particular) works by implementing a series of extension methods, most of which work on IEnumerable<T>.  The language enhancements use these extension methods to create a very concise, readable alternative to using traditional foreach statement.  For example, let’s revisit our minimum aggregation routine we wrote in Part 4: double min = double.MaxValue; foreach(var item in collection) { double value = item.PerformComputation(); min = System.Math.Min(min, value); } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Here, we’re doing a very simple computation, but writing this in an imperative style.  This can be loosely translated to English as: Create a very large number, and save it in min Loop through each item in the collection. For every item: Perform some computation, and save the result If the computation is less than min, set min to the computation Although this is fairly easy to follow, it’s quite a few lines of code, and it requires us to read through the code, step by step, line by line, in order to understand the intention of the developer. We can rework this same statement, using LINQ: double min = collection.Min(item => item.PerformComputation()); Here, we’re after the same information.  However, this is written using a declarative programming style.  When we see this code, we’d naturally translate this to English as: Save the Min value of collection, determined via calling item.PerformComputation() That’s it – instead of multiple logical steps, we have one single, declarative request.  This makes the developer’s intentions very clear, and very easy to follow.  The system is free to implement this using whatever method required. Parallel LINQ (PLINQ) extends LINQ to Objects to support parallel operations.  This is a perfect fit in many cases when you have a problem that can be decomposed by data.  To show this, let’s again refer to our minimum aggregation routine from Part 4, but this time, let’s review our final, parallelized version: // Safe, and fast! double min = double.MaxValue; // Make a "lock" object object syncObject = new object(); Parallel.ForEach( collection, // First, we provide a local state initialization delegate. () => double.MaxValue, // Next, we supply the body, which takes the original item, loop state, // and local state, and returns a new local state (item, loopState, localState) => { double value = item.PerformComputation(); return System.Math.Min(localState, value); }, // Finally, we provide an Action<TLocal>, to "merge" results together localState => { // This requires locking, but it's only once per used thread lock(syncObj) min = System.Math.Min(min, localState); } ); Here, we’re doing the same computation as above, but fully parallelized.  Describing this in English becomes quite a feat: Create a very large number, and save it in min Create a temporary object we can use for locking Call Parallel.ForEach, specifying three delegates For the first delegate: Initialize a local variable to hold the local state to a very large number For the second delegate: For each item in the collection, perform some computation, save the result If the result is less than our local state, save the result in local state For the final delegate: Take a lock on our temporary object to protect our min variable Save the min of our min and local state variables Although this solves our problem, and does it in a very efficient way, we’ve created a set of code that is quite a bit more difficult to understand and maintain. PLINQ provides us with a very nice alternative.  In order to use PLINQ, we need to learn one new extension method that works on IEnumerable<T> – ParallelEnumerable.AsParallel(). That’s all we need to learn in order to use PLINQ: one single method.  We can write our minimum aggregation in PLINQ very simply: double min = collection.AsParallel().Min(item => item.PerformComputation()); By simply adding “.AsParallel()” to our LINQ to Objects query, we converted this to using PLINQ and running this computation in parallel!  This can be loosely translated into English easily, as well: Process the collection in parallel Get the Minimum value, determined by calling PerformComputation on each item Here, our intention is very clear and easy to understand.  We just want to perform the same operation we did in serial, but run it “as parallel”.  PLINQ completely extends LINQ to Objects: the entire functionality of LINQ to Objects is available.  By simply adding a call to AsParallel(), we can specify that a collection should be processed in parallel.  This is simple, safe, and incredibly useful.

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  • How do I disable the touchpad using the upper left corner on an HP Pavilion dv6?

    - by William
    To disable the touchpad on an HP Pavilion dv6, you double tap on an area in the upper left hand corner of the touchpad. Then the blue indicator light around the border of the touchpad turns red, and the touchpad is disabled. Double tapping on this area again turns the touchpad turns back on. I do a lot of typing, and frequently bump the touchpad, messing up my work and annoying me. So, I would like to enable the ability to disable the touchpad by double-tapping on the area in the upper left hand corner. Unfortunately, there is no function key backup to disable the touchpad. This does not work in Ubuntu. I can turn it off using touchpad-indicator, but the program must be manually started and you have to disable using the key combination. Double-tapping the area is much easier. My computer is the HP Pavilion dv6-6135dx. Any help would be greatly appreciated.

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  • Are there any decent free JAVA data plotting libraries out there?

    - by Kurt W. Leucht
    On a recent JAVA project, we needed a free JAVA based real-time data plotting utility. After much searching, we found this tool called the Scientific Graphics Toolkit or SGT from NOAA. It seemed pretty robust, but we found out that it wasn't terribly configurable. Or at least not configurable enough to meet our needs. We ended up digging very deeply into the JAVA code and reverse engineering the code and changing it all around to make the plot tool look and act the way we wanted it to look and act. Of course, this killed any chance for future upgrades from NOAA. So what free or cheap JAVA based data plotting tools or libraries do you use? Followup: Thanks for the JFreeChart suggestions. I checked out their website and it looks like a very nice data charting and plotting utility. I should have made it clear in my original question that I was looking specifically to plot real-time data. I corrected my question above to make that point clear. It appears that JFreeChart support for live data is marginal at best, though. Any other suggestions out there?

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