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How to embed Instagram photos and videos on your blog / website

- by Gopinath

Tired of hacks to embed Instagram photos and videos on your website? Here is some good news – Instagram now officially allows you to embed public photos & videos on web through a simple IFrame snippet. When viewing an Instagram photo or video through the web interface, you can get embed snippet by clicking on the new “share” button . Here is a screen grab of new share button You can tweak the embed script to adjust height and width of the image but there are no options to remove link back to the Instagram website. Thanks to Instagram for making it so easy to embed beautiful pictures on internet.

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Simple method for reliably detecting code in text?

- by Jeff Atwood

GMail has this feature where it will warn you if you try to send an email that it thinks might have an attachment. Because GMail detected the string see the attached in the email, but no actual attachment, it warns me with an OK / Cancel dialog when I click the Send button. We have a related problem on Stack Overflow. That is, when a user enters a post like this one: my problem is I need to change the database but I don't won't to create a new connection. example: DataSet dsMasterInfo = new DataSet(); Database db = DatabaseFactory.CreateDatabase("ConnectionString"); DbCommand dbCommand = db.GetStoredProcCommand("uspGetMasterName"); This user did not format their code as code! That is, they didn't indent by 4 spaces per Markdown, or use the code button (or the keyboard shortcut ctrl+k) which does that for them. Thus, our system is accreting a lot of edits where people have to go in and manually format code for people that are somehow unable to figure this out. This leads to a lot of bellyaching. We've improved the editor help several times, but short of driving over to the user's house and pressing the correct buttons on their keyboard for them, we're at a loss to see what to do next. That's why we are considering a Google GMail style warning: Did you mean to post code? You wrote stuff that we think looks like code, but you didn't format it as code by indenting 4 spaces, using the toolbar code button or the ctrl+k code formatting command. However, presenting this warning requires us to detect the presence of what we think is unformatted code in a question. What is a simple, semi-reliable way of doing this? Per Markdown, code is always indented by 4 spaces or within backticks, so anything correctly formatted can be discarded from the check immediately. This is only a warning and it will only apply to low-reputation users asking their first questions (or providing their first answers), so some false positives are OK, so long as they are about 5% or less. Questions on Stack Overflow can be in any language, though we can realistically limit our check to, say, the "big ten" languages. Per the tags page that would be C#, Java, PHP, JavaScript, Objective-C, C, C++, Python, Ruby. Use the Stack Overflow creative commons data dump to audit your potential solution (or just pick a few questions in the top 10 tags on Stack Overflow) and see how it does. Pseudocode is fine, but we use c# if you want to be extra friendly. The simpler the better (so long as it works). KISS! If your solution requires us to attempt to compile posts in 10 different compilers, or an army of people to manually train a bayesian inference engine, that's ... not exactly what we had in mind.

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Programmatically updating one update panel elements from another update panel elements

- by Jalpesh P. Vadgama

While taking interviews for asp.net candidate I am often asking this question but most peoples are not able to give this answer. So I decided to write a blog post about this. Here is the scenario. There are two update panels in my html code in first update panel there is textbox hello world and another update panel there is a button called btnHelloWorld. Now I want to update textbox text in button click event without post back. But in normal scenario It will not update the textbox text as both are in different update panel. Here is the code for that. <form id="form1" runat="server"> <asp:ScriptManager ID="myScriptManager" runat="server" EnableCdn="true"></asp:ScriptManager> <asp:UpdatePanel ID="firstUpdatePanel" runat="server" UpdateMode="Conditional"> <ContentTemplate> <asp:TextBox ID="txtHelloWorld" runat="server"></asp:TextBox> </ContentTemplate> </asp:UpdatePanel> <asp:UpdatePanel ID="secondUpdatePanel" runat="server" UpdateMode="Conditional"> <ContentTemplate> <asp:Button ID="btnHelloWorld" runat="server" Text="Print Hello World" onclick="btnHelloWorld_Click" /> </ContentTemplate> </asp:UpdatePanel> </form> Here comes magic!!. Lots of people don’t know that update panel are providing the Update method from which we can programmatically update the update panel elements without post back. Below is code for that. protected void btnHelloWorld_Click(object sender, System.EventArgs e) { txtHelloWorld.Text = "Hello World!!!"; firstUpdatePanel.Update(); } That’s it here I have updated the firstUpdatePanel from the code!!!. Hope you liked it.. Stay tuned for more..Happy Programming.. Technorati Tags: UpdatePanel,ASP.NET

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Architecture for a template-building, WYSIWIG application

- by Sam Selikoff

I'm building a WYSIWYG designer in Ember.js. The designer will allow users to create campaigns - think MailChimp. To build a campaign, users will choose an existing template. The template will have a defined layout. The user will then be taken to the designer, where he will be able to edit the text and style, and additionally change some layout options. I've been thinking about how best to go about structuring this app, and there are a few hurdles. Specifically, the output of the campaign will be dynamic: eventually, it will be published somewhere, and when the consumers (not my users, but the people clicking on the campaign that my user created) visit the campaign, certain pieces of data will change, depending on the type of consumer viewing the campaign. That means the ultimate output of the designer will be a dynamic site. The data that is dynamic for this site - the end product - will not be manipulated by the user in the designer. However, the data that will be manipulated by the user in the designer are things like copy, styles, layout options, etc. I'll call the first set of variables server-side data, and the second client-side data. It seems, then, that the process will go something like this: I'll need to create templates for this designer that have two dynamic segments. For instance, the server-side data could be Liquid expressions, and the client-side data Handlebars expressions. When the user creates a campaign, I would compile the template on the back end using some dummy data for the server-side variables, and serve up a handlebars template to the Ember app. The user would then edit the template, and the Ember app would save all his edits to the JS variables that were powering the template. This way he'd be able to preview the template. When he saves, he'll send back the selected template, along with all the data and options he's made. When it comes time to publish, the back-end system will have to do two things: compile the template with Handlebars using the campaign data, and then compile the template with Liquid using the server-side data Is my thinking roughly accurate about this, or is there a simpler way?

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Kubuntu login problem

- by Balázs Mária Németh

I have a problem when trying to login to my Kubuntu 10.10. The login screen shows up, then I type my password, a blank screen is shown with my desktop background picture and then throws me back on the login screen. if I choose to login from console, I can do that, and by typing startx I can log in just fine but in the end I cannot shutdown the computer from the k menu nor will my settings remembered for the next time I log back. I have my home directory mounted from a different partition but I tried to create a new user account and I could log in without any kind of problem. The home directory is not encrypted, at least not to my knowledge. Some log files: Xorg.0.log dmesg.out kdm.log xsession.errors

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Terminal stops working after closing a program window started from the Terminal

- by Hongbo Zhu

System: I have XUbuntu 12.04 64bit and run Terminal 0.4.8 (Xfce Terminal Emulator). Problem: My Terminal always stops to accept any input after I close a program window started from the Terminal. Details: For example, I start leafpad, (or geany, tkdiff etc) from the terminal. I close the window after finishing my job by either clicking on the close button or using ctrl-w. Then when I go back to the terminal, it does not accept any input any more. Workaround: When this happens, I have to click on any other window (giving it the focus) and go back to Terminal again. Usually this causes the Terminal to starts to accept input again. So I always have to do a alt-tab, shift-alt-tab after I close a program started from Terminal. This is very annoying. Googled and did not find answer.

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Check connection and reconnect wifi

- by Ruud

I'm building a wireless photoframe. The one thing I haven't been able to figure out is how to get my wifi connection back up using a recommended method. Right now I edited /etc/network/interfaces so wlan0 is started at boot: auto wlan0 iface wlan0 inet dhcp wireless-essid ourssid This method works fine for booting. But I found that if I do not check the connection for a long time (could be a week) it might be down. So I should reconnect. What I do now to verify the connection is working is downloading a file from the server that can't be cached (http://server.ext/ping.php?randomize=123456) If I fail to retrieve the file I assume that the connection is no longer working and I run a shell script like #!/bin/bash ifconfig wlan0 up iwconfig wlan0 essid "ourssid" dhclient wlan0 And the connection comes back. But I can't find anything if this is in any way a good method. Can this be improved upon, or is this already right?

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C#/.NET Little Wonders: Skip() and Take()

- by James Michael Hare

Once again, in this series of posts I look at the parts of the .NET Framework that may seem trivial, but can help improve your code by making it easier to write and maintain. The index of all my past little wonders posts can be found here. I’ve covered many valuable methods from System.Linq class library before, so you already know it’s packed with extension-method goodness. Today I’d like to cover two small families I’ve neglected to mention before: Skip() and Take(). While these methods seem so simple, they are an easy way to create sub-sequences for IEnumerable<T>, much the way GetRange() creates sub-lists for List<T>. Skip() and SkipWhile() The Skip() family of methods is used to ignore items in a sequence until either a certain number are passed, or until a certain condition becomes false. This makes the methods great for starting a sequence at a point possibly other than the first item of the original sequence. The Skip() family of methods contains the following methods (shown below in extension method syntax): Skip(int count) Ignores the specified number of items and returns a sequence starting at the item after the last skipped item (if any). SkipWhile(Func<T, bool> predicate) Ignores items as long as the predicate returns true and returns a sequence starting with the first item to invalidate the predicate (if any). SkipWhile(Func<T, int, bool> predicate) Same as above, but passes not only the item itself to the predicate, but also the index of the item. For example: 1: var list = new[] { 3.14, 2.72, 42.0, 9.9, 13.0, 101.0 }; 2: 3: // sequence contains { 2.72, 42.0, 9.9, 13.0, 101.0 } 4: var afterSecond = list.Skip(1); 5: Console.WriteLine(string.Join(", ", afterSecond)); 6: 7: // sequence contains { 42.0, 9.9, 13.0, 101.0 } 8: var afterFirstDoubleDigit = list.SkipWhile(v => v < 10.0); 9: Console.WriteLine(string.Join(", ", afterFirstDoubleDigit)); Note that the SkipWhile() stops skipping at the first item that returns false and returns from there to the rest of the sequence, even if further items in that sequence also would satisfy the predicate (otherwise, you’d probably be using Where() instead, of course). If you do use the form of SkipWhile() which also passes an index into the predicate, then you should keep in mind that this is the index of the item in the sequence you are calling SkipWhile() from, not the index in the original collection. That is, consider the following: 1: var list = new[] { 1.0, 1.1, 1.2, 2.2, 2.3, 2.4 }; 2: 3: // Get all items < 10, then 4: var whatAmI = list 5: .Skip(2) 6: .SkipWhile((i, x) => i > x); For this example the result above is 2.4, and not 1.2, 2.2, 2.3, 2.4 as some might expect. The key is knowing what the index is that’s passed to the predicate in SkipWhile(). In the code above, because Skip(2) skips 1.0 and 1.1, the sequence passed to SkipWhile() begins at 1.2 and thus it considers the “index” of 1.2 to be 0 and not 2. This same logic applies when using any of the extension methods that have an overload that allows you to pass an index into the delegate, such as SkipWhile(), TakeWhile(), Select(), Where(), etc. It should also be noted, that it’s fine to Skip() more items than exist in the sequence (an empty sequence is the result), or even to Skip(0) which results in the full sequence. So why would it ever be useful to return Skip(0) deliberately? One reason might be to return a List<T> as an immutable sequence. Consider this class: 1: public class MyClass 2: { 3: private List<int> _myList = new List<int>(); 4: 5: // works on surface, but one can cast back to List<int> and mutate the original... 6: public IEnumerable<int> OneWay 7: { 8: get { return _myList; } 9: } 10: 11: // works, but still has Add() etc which throw at runtime if accidentally called 12: public ReadOnlyCollection<int> AnotherWay 13: { 14: get { return new ReadOnlyCollection<int>(_myList); } 15: } 16: 17: // immutable, can't be cast back to List<int>, doesn't have methods that throw at runtime 18: public IEnumerable<int> YetAnotherWay 19: { 20: get { return _myList.Skip(0); } 21: } 22: } This code snippet shows three (among many) ways to return an internal sequence in varying levels of immutability. Obviously if you just try to return as IEnumerable<T> without doing anything more, there’s always the danger the caller could cast back to List<T> and mutate your internal structure. You could also return a ReadOnlyCollection<T>, but this still has the mutating methods, they just throw at runtime when called instead of giving compiler errors. Finally, you can return the internal list as a sequence using Skip(0) which skips no items and just runs an iterator through the list. The result is an iterator, which cannot be cast back to List<T>. Of course, there’s many ways to do this (including just cloning the list, etc.) but the point is it illustrates a potential use of using an explicit Skip(0). Take() and TakeWhile() The Take() and TakeWhile() methods can be though of as somewhat of the inverse of Skip() and SkipWhile(). That is, while Skip() ignores the first X items and returns the rest, Take() returns a sequence of the first X items and ignores the rest. Since they are somewhat of an inverse of each other, it makes sense that their calling signatures are identical (beyond the method name obviously): Take(int count) Returns a sequence containing up to the specified number of items. Anything after the count is ignored. TakeWhile(Func<T, bool> predicate) Returns a sequence containing items as long as the predicate returns true. Anything from the point the predicate returns false and beyond is ignored. TakeWhile(Func<T, int, bool> predicate) Same as above, but passes not only the item itself to the predicate, but also the index of the item. So, for example, we could do the following: 1: var list = new[] { 1.0, 1.1, 1.2, 2.2, 2.3, 2.4 }; 2: 3: // sequence contains 1.0 and 1.1 4: var firstTwo = list.Take(2); 5: 6: // sequence contains 1.0, 1.1, 1.2 7: var underTwo = list.TakeWhile(i => i < 2.0); The same considerations for SkipWhile() with index apply to TakeWhile() with index, of course. Using Skip() and Take() for sub-sequences A few weeks back, I talked about The List<T> Range Methods and showed how they could be used to get a sub-list of a List<T>. This works well if you’re dealing with List<T>, or don’t mind converting to List<T>. But if you have a simple IEnumerable<T> sequence and want to get a sub-sequence, you can also use Skip() and Take() to much the same effect: 1: var list = new List<double> { 1.0, 1.1, 1.2, 2.2, 2.3, 2.4 }; 2: 3: // results in List<T> containing { 1.2, 2.2, 2.3 } 4: var subList = list.GetRange(2, 3); 5: 6: // results in sequence containing { 1.2, 2.2, 2.3 } 7: var subSequence = list.Skip(2).Take(3); I say “much the same effect” because there are some differences. First of all GetRange() will throw if the starting index or the count are greater than the number of items in the list, but Skip() and Take() do not. Also GetRange() is a method off of List<T>, thus it can use direct indexing to get to the items much more efficiently, whereas Skip() and Take() operate on sequences and may actually have to walk through the items they skip to create the resulting sequence. So each has their pros and cons. My general rule of thumb is if I’m already working with a List<T> I’ll use GetRange(), but for any plain IEnumerable<T> sequence I’ll tend to prefer Skip() and Take() instead. Summary The Skip() and Take() families of LINQ extension methods are handy for producing sub-sequences from any IEnumerable<T> sequence. Skip() will ignore the specified number of items and return the rest of the sequence, whereas Take() will return the specified number of items and ignore the rest of the sequence. Similarly, the SkipWhile() and TakeWhile() methods can be used to skip or take items, respectively, until a given predicate returns false. Technorati Tags: C#, CSharp, .NET, LINQ, IEnumerable<T>, Skip, Take, SkipWhile, TakeWhile

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Challenge: Learn One New Thing Today

- by BuckWoody

Most of us know that there's a lot to learn. I'm teaching a class this morning, and even on the subject where I'm the "expert" (that word always makes me nervous!) I still have a lot to learn. To learn, sometimes I take a class, read a book, or carve out a large chunk of time so that I can fully grasp the subject. But since I've been working, I really don't have a lot of opportunities to do that. Like you, I'm really busy. So what I've been able to learn is to take just a few moments each day and learn something new about SQL Server. I thought I would share that process here. First, I started with an outline of the product. You can use Books Online, a college class syllabus, a training class outline, or a comprehensive book table of contents. Then I checked off the things I felt I knew a little about. Sure, I'll come back around to those, but I want to be as efficient as I can. I then trolled various checklists to see what I needed to know about the subjects I didn't have checked off. From there (I'm doing all this in a notepad, and then later in OneNote when that came out) I developed a block of text for that subject. Every time I ran across a book, article, web site or recording on that topic I wrote that reference down. Later I went back and quickly looked over those resources and tried to figure out how I could parcel it out - 10 minutes for this one, a free seminar (like the one I'm teaching today - ironic) takes 4 hours, a web site takes an hour to grok, that sort of thing. Then all I did was figure out how much time each day I'll give to training. Sure, it literally may be ten minutes, but it adds up. One final thing - as I used something I learned, I came back and made notes in that topic. You learn to play the piano not just from a book, but by playing the piano, after all. If you don't use what you learn, you'll lose it. So if you're interested in getting better at SQL Server, and you're willing to do a little work, try out this method. Leave a note here for others to encourage them. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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Memento with optional state?

- by Korey Hinton

EDIT: As pointed out by Steve Evers and pdr, I am not correctly implementing the Memento pattern, my design is actually State pattern. Menu Program I built a console-based menu program with multiple levels that selects a particular test to run. Each level more precisely describes the operation. At any level you can type back to go back one level (memento). Level 1: Server Type? [1] Server A [2] Server B Level 2: Server environment? [1] test [2] production Level 3: Test type? [1] load [2] unit Level 4: Data Collection? [1] Legal docs [2] Corporate docs Level 4.5 (optional): Load Test Type [2] Multi TIF [2] Single PDF Level 5: Command Type? [1] Move [2] Copy [3] Remove [4] Custom Level 6: Enter a keyword [setup, cleanup, run] Design States PROBLEM: Right now the STATES enum is the determining factor as to what state is BACK and what state is NEXT yet it knows nothing about what the current memento state is. Has anyone experienced a similar issue and found an effective way to handle mementos with optional state? static enum STATES { SERVER, ENVIRONMENT, TEST_TYPE, COLLECTION, COMMAND_TYPE, KEYWORD, FINISHED } Possible Solution (Not-flexible) In reference to my code below, every case statement in the Menu class could check the state of currentMemo and then set the STATE (enum) accordingly to pass to the Builder. However, this doesn't seem flexible very flexible to change and I'm struggling to see an effective way refactor the design. class Menu extends StateConscious { private State state; private Scanner reader; private ServerUtils utility; Menu() { state = new State(); reader = new Scanner(System.in); utility = new ServerUtils(); } // Recurring menu logic public void startPromptingLoop() { List<State> states = new ArrayList<>(); states.add(new State()); boolean redoInput = false; boolean userIsDone = false; while (true) { // get Memento from last loop Memento currentMemento = states.get(states.size() - 1) .saveMemento(); if (currentMemento == null) currentMemento = new Memento.Builder(0).build(); if (!redoInput) System.out.println(currentMemento.prompt); redoInput = false; // prepare Memento for next loop Memento nextMemento = null; STATES state = STATES.values()[states.size() - 1]; // get user input String selection = reader.nextLine(); switch (selection) { case "exit": reader.close(); return; // only escape case "quit": nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); states.clear(); break; case "back": nextMemento = new Memento.Builder(previous(state), currentMemento, selection).build(); if (states.size() <= 1) { states.remove(0); } else { states.remove(states.size() - 1); states.remove(states.size() - 1); } break; case "1": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "2": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "3": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "4": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; default: if (state.equals(STATES.CATEGORY)) { String command = selection; System.out.println("Executing " + command + " command on: " + currentMemento.type + " " + currentMemento.environment); utility.executeCommand(currentMemento.nickname, command); userIsDone = true; states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else if (state.equals(STATES.KEYWORD)) { nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else { redoInput = true; System.out.println("give it another try"); continue; } break; } if (userIsDone) { // start the recurring menu over from the beginning for (int i = 0; i < states.size(); i++) { if (i != 0) { states.remove(i); // remove all except first } } reader = new Scanner(System.in); this.state = new State(); userIsDone = false; } if (!redoInput) { this.state.restoreMemento(nextMemento); states.add(this.state); } } } }

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Error message during update from 13.04 to 13.10

- by layonhands

The following was reported after I attempted to report the problem back to Ubuntu: The problem cannot be reported: You have some obsolete package versions installed. Please upgrade the following packages and check if the problem still occurs: ubuntu-release-upgrader-gtk, apport, apport-gtk, apport-symptoms, apt, apt-utils, at-spi2-core, binutils, dbus, gcc-4.7-base, gdb, gir1.2-atk-1.0, gir1.2-gtk-3.0, glib-networking, glib-networking-common, glib-networking-services, gnupg, gpgv, ifupdown, initramfs-tools, initramfs-tools-bin, kmod, libappindicator3-1, libapt-inst1.5, libapt-pkg4.12, libasound2, libatk-bridge2.0-0, libatk1.0-0, libatk1.0-data, libatspi2.0-0, libc-bin, libc6, libcups2, libdbus-1-3, libdbusmenu-glib4, libdbusmenu-gtk3-4, libdrm-intel1, libdrm-nouveau2, libdrm-radeon1, libdrm2, libgail-3-0, libgcc1, libgcrypt11, libglib2.0-0, libglib2.0-data, libgnutls26, libgomp1, libgstreamer-plugins-base1.0-0, libgstreamer1.0-0, libgtk-3-0, libgtk-3-bin, libgtk-3-common, libgudev-1.0-0, libicu48, libindicator3-7, libkmod2, liblcms2-2, libpci3, libplymouth2, libpolkit-agent-1-0, libpolkit-backend-1-0, libpolkit-gobject-1-0, libprocps0, libpython-stdlib, libpython2.7, libpython2.7-minimal, libpython2.7-stdlib, libpython3-stdlib, libpython3.3-minimal, libpython3.3-stdlib, libssl1.0.0, libstdc++6, libtiff5, libudev1, libx11-6, libx11-data, libx11-xcb1, libxcb-dri2-0, libxcb-glx0, libxcb-render0, libxcb-shm0, libxcb1, libxcursor1, libxext6, libxfixes3, libxi6, libxinerama1, libxml2, libxrandr2, libxrender1, libxres1, libxt6, libxtst6, libxxf86vm1, lsb-base, lsb-release, module-init-tools, multiarch-support, openssl, passwd, pciutils, perl, perl-base, perl-modules, plymouth, plymouth-theme-ubuntu-text, policykit-1, procps, python, python-gi, python-minimal, python2.7, python2.7-minimal, python3, python3-apport, python3-distupgrade, python3-gi, python3-minimal, python3-problem-report, python3-software-properties, python3-update-manager, python3.3, python3.3-minimal, rsyslog, shared-mime-info, software-properties-common, software-properties-gtk, tar, tzdata, ubuntu-release-upgrader-core, ubuntu-release-upgrader-gtk, udev, update-manager, update-manager-core, update-notifier, update-notifier-common If this question has already been answered, I'm sorry for the repost, but I would appreciate a link to the fix. Thanks. FYI: Dell Latitude D630, Intel Centrino processor. Also, the updater is currently running what seems to be the update. I will report back when it is done going through its process to let you know if it is in fact the 13.10 update. Update 2: System went through an update, but it wasn't for the OS. I think it was an update for the error message mentioned above. Now the OS update is currently running the 'distribution upgrade' portion of the update. This is further than it had gone before. Again I will report back once this is done to let you know whether or not the update was successful. Final Update: Don't know for sure what happened, but I'm almost sure that the error mentioned above was resolved in the first update prior to the 13.10 update. All set.

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accessing c++ class members with luaplus

- by cppanda

i've implemented LuaPlus in my engine eventmanager successfully and really like the flexibility i gained. but i'm still not exactly where i want to by, because i can't link my c++ classes to a lua class. for example i have a Actor class in c++, and i want to be able to create the same class in lua and gain access to members with luaplus, but i can't figure how i can achieve that. Is this actually luaplus built in functionality, or do i have to write my own interface that exchanges data tables between c++ and lua? my current approach would be to fire an event in luascript that creates an new actor class in c++ code, and transfer its id and the data i need to back to lua. when i modify the data i send the modifications back to c++ code again, but i actually thought there's something in luaplus that exposes this functionality already.

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Unable to access internet from devices connected over wifi hotspot with ubuntu 13.04

- by Jeesmon Jacob

I am using ubuntu 13.04 and till couple of days back I was able to connect to internet using the hotspot connection I had created previously when I started using ubuntu 10... But two days back I noticed that devices are getting connected to wifi but are not able to access internet.. I deleted my old wifi hotspot and created a new one by going to network settings and there by clicking create a hotspot option.. I logged in from my wife's laptop which is running on windows 7. It was able to establish connection but was not able to access the internet.. Same is happening with my iPhone too I am able to connect to hotspot but for some reason it is not able to access internet... Any help would be highly appreciated.. Thanks Jacob

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Mistaken dist-upgrade, is this bad?

- by SpashHit

I was looking for Update Manager on Ubuntu 10.10 Netbook Edition and couldn't find it, so in Terminal I did: sudo apt-get update sudo apt-get upgrade I got a message saying some packages were "held back" and searching online gave me the suggestion to do: sudo apt-get dist-upgrade So I did that and it updated my kernel and now uname -a says I have 2.6.35-23-generic #40-Ubuntu SMP. My system is still working normally, but I'm now second-guessing if I did the right thing. Was this kernel update meant for the next version of Ubuntu? Should I try to back it out?

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How to create Custom ListForm WebPart

- by DipeshBhanani

Mostly all who works extensively on SharePoint (including meJ) don’t like to use out-of-box list forms (DispForm.aspx, EditForm.aspx, NewForm.aspx) as interface. Actually these OOB list forms bind hands of developers for the customization. It gives headache to developers to add just one post back event, for a dropdown field and to populate other fields in NewForm.aspx or EditForm.aspx. On top of that clients always ask such stuff. So here I am going to give you guys a flight for SharePoint Customization world. In this blog, I will explain, how to create CustomListForm WebPart. In my next blogs, I am going to explain easy deployment of List Forms through features and last, guidance on using SharePoint web controls. 1. First thing, create a class library project through Visual Studio and inherit the class with WebPart class. public class CustomListForm : WebPart 2. Declare the public variables and properties which we are going to use throughout the class. You will get to know these once you see them in use. #region "Variable Declaration" Table spTableCntl; FormToolBar formToolBar; Literal ltAlertMessage; Guid SiteId; Guid ListId; int ItemId; string ListName; #endregion #region "Properties" SPControlMode _ControlMode = SPControlMode.New; [Personalizable(PersonalizationScope.Shared), WebBrowsable(true), WebDisplayName("Control Mode"), WebDescription("Set Control Mode"), DefaultValue(""), Category("Miscellaneous")] public SPControlMode ControlMode { get { return _ControlMode; } set { _ControlMode = value; } } #endregion The property “ControlMode” is used to identify the mode of the List Form. The property is of type SPControlMode which is an enum type with values (Display, Edit, New and Invalid). When we will add this WebPart to DispForm.aspx, EditForm.aspx and NewForm.aspx, we will set the WebPart property “ControlMode” to Display, Edit and New respectively. 3. Now, we need to override the CreateChildControl method and write code to manually add SharePoint Web Controls related to each list fields as well as ToolBar controls. protected override void CreateChildControls() { base.CreateChildControls(); try { SiteId = SPContext.Current.Site.ID; ListId = SPContext.Current.ListId; ListName = SPContext.Current.List.Title; if (_ControlMode == SPControlMode.Display || _ControlMode == SPControlMode.Edit) ItemId = SPContext.Current.ItemId; SPSecurity.RunWithElevatedPrivileges(delegate() { using (SPSite site = new SPSite(SiteId)) { //creating a new SPSite with credentials of System Account using (SPWeb web = site.OpenWeb()) { //<Custom Code for creating form controls> } } }); } catch (Exception ex) { ShowError(ex, "CreateChildControls"); } } Here we are assuming that we are developing this WebPart to plug into List Forms. Hence we will get the List Id and List Name from the current context. We can have Item Id only in case of Display and Edit Mode. We are putting our code into “RunWithElevatedPrivileges” to elevate privileges to System Account. Now, let’s get deep down into the main code and expand “//<Custom Code for creating form controls>”. Before initiating any SharePoint control, we need to set context of SharePoint web controls explicitly so that it will be instantiated with elevated System Account user. Following line does the job. //To create SharePoint controls with new web object and System Account credentials SPControl.SetContextWeb(Context, web); First thing, let’s add main table as container for all controls. //Table to render webpart Table spTableMain = new Table(); spTableMain.CellPadding = 0; spTableMain.CellSpacing = 0; spTableMain.Width = new Unit(100, UnitType.Percentage); this.Controls.Add(spTableMain); Now we need to add Top toolbar with Save and Cancel button at top as you see in the below screen shot. // Add Row and Cell for Top ToolBar TableRow spRowTopToolBar = new TableRow(); spTableMain.Rows.Add(spRowTopToolBar); TableCell spCellTopToolBar = new TableCell(); spRowTopToolBar.Cells.Add(spCellTopToolBar); spCellTopToolBar.Width = new Unit(100, UnitType.Percentage); ToolBar toolBarTop = (ToolBar)Page.LoadControl("/_controltemplates/ToolBar.ascx"); toolBarTop.CssClass = "ms-formtoolbar"; toolBarTop.ID = "toolBarTbltop"; toolBarTop.RightButtons.SeparatorHtml = "<td class=ms-separator> </td>"; if (_ControlMode != SPControlMode.Display) { SaveButton btnSave = new SaveButton(); btnSave.ControlMode = _ControlMode; btnSave.ListId = ListId; if (_ControlMode == SPControlMode.New) btnSave.RenderContext = SPContext.GetContext(web); else { btnSave.RenderContext = SPContext.GetContext(this.Context, ItemId, ListId, web); btnSave.ItemContext = SPContext.GetContext(this.Context, ItemId, ListId, web); btnSave.ItemId = ItemId; } toolBarTop.RightButtons.Controls.Add(btnSave); } GoBackButton goBackButtonTop = new GoBackButton(); toolBarTop.RightButtons.Controls.Add(goBackButtonTop); goBackButtonTop.ControlMode = SPControlMode.Display; spCellTopToolBar.Controls.Add(toolBarTop); Here we have use “SaveButton” and “GoBackButton” which are internal SharePoint web controls for save and cancel functionality. I have set some of the properties of Save Button with if-else condition because we will not have Item Id in case of New Mode. Item Id property is used to identify which SharePoint List Item need to be saved. Now, add Form Toolbar to the page which contains “Attach File”, “Delete Item” etc buttons. // Add Row and Cell for FormToolBar TableRow spRowFormToolBar = new TableRow(); spTableMain.Rows.Add(spRowFormToolBar); TableCell spCellFormToolBar = new TableCell(); spRowFormToolBar.Cells.Add(spCellFormToolBar); spCellFormToolBar.Width = new Unit(100, UnitType.Percentage); FormToolBar formToolBar = new FormToolBar(); formToolBar.ID = "formToolBar"; formToolBar.ListId = ListId; if (_ControlMode == SPControlMode.New) formToolBar.RenderContext = SPContext.GetContext(web); else { formToolBar.RenderContext = SPContext.GetContext(this.Context, ItemId, ListId, web); formToolBar.ItemContext = SPContext.GetContext(this.Context, ItemId, ListId, web); formToolBar.ItemId = ItemId; } formToolBar.ControlMode = _ControlMode; formToolBar.EnableViewState = true; spCellFormToolBar.Controls.Add(formToolBar); The ControlMode property will take care of which button to be displayed on the toolbar. E.g. “Attach files”, “Delete Item” in new/edit forms and “New Item”, “Edit Item”, “Delete Item”, “Manage Permissions” etc in display forms. Now add main section which contains form field controls. //Create Form Field controls and add them in Table "spCellCntl" CreateFieldControls(web); //Add public variable "spCellCntl" containing all form controls to the page spRowCntl.Cells.Add(spCellCntl); spCellCntl.Width = new Unit(100, UnitType.Percentage); spCellCntl.Controls.Add(spTableCntl); //Add a Blank Row with height of 5px to render space between ToolBar table and Control table TableRow spRowLine1 = new TableRow(); spTableMain.Rows.Add(spRowLine1); TableCell spCellLine1 = new TableCell(); spRowLine1.Cells.Add(spCellLine1); spCellLine1.Height = new Unit(5, UnitType.Pixel); spCellLine1.Controls.Add(new LiteralControl("<IMG SRC='/_layouts/images/blank.gif' width=1 height=1 alt=''>")); //Add Row and Cell for Form Controls Section TableRow spRowCntl = new TableRow(); spTableMain.Rows.Add(spRowCntl); TableCell spCellCntl = new TableCell(); //Create Form Field controls and add them in Table "spCellCntl" CreateFieldControls(web); //Add public variable "spCellCntl" containing all form controls to the page spRowCntl.Cells.Add(spCellCntl); spCellCntl.Width = new Unit(100, UnitType.Percentage); spCellCntl.Controls.Add(spTableCntl); TableRow spRowLine2 = new TableRow(); spTableMain.Rows.Add(spRowLine2); TableCell spCellLine2 = new TableCell(); spRowLine2.Cells.Add(spCellLine2); spCellLine2.CssClass = "ms-formline"; spCellLine2.Controls.Add(new LiteralControl("<IMG SRC='/_layouts/images/blank.gif' width=1 height=1 alt=''>")); // Add Blank row with height of 5 pixel TableRow spRowLine3 = new TableRow(); spTableMain.Rows.Add(spRowLine3); TableCell spCellLine3 = new TableCell(); spRowLine3.Cells.Add(spCellLine3); spCellLine3.Height = new Unit(5, UnitType.Pixel); spCellLine3.Controls.Add(new LiteralControl("<IMG SRC='/_layouts/images/blank.gif' width=1 height=1 alt=''>")); You can add bottom toolbar also to get same look and feel as OOB forms. I am not adding here as the blog will be much lengthy. At last, you need to write following lines to allow unsafe updates for Save and Delete button. // Allow unsafe update on web for save button and delete button if (this.Page.IsPostBack && this.Page.Request["__EventTarget"] != null && (this.Page.Request["__EventTarget"].Contains("IOSaveItem") || this.Page.Request["__EventTarget"].Contains("IODeleteItem"))) { SPContext.Current.Web.AllowUnsafeUpdates = true; } So that’s all. We have finished writing Custom Code for adding field control. But something most important is skipped. In above code, I have called function “CreateFieldControls(web);” to add SharePoint field controls to the page. Let’s see the implementation of the function: private void CreateFieldControls(SPWeb pWeb) { SPList listMain = pWeb.Lists[ListId]; SPFieldCollection fields = listMain.Fields; //Main Table to render all fields spTableCntl = new Table(); spTableCntl.BorderWidth = new Unit(0); spTableCntl.CellPadding = 0; spTableCntl.CellSpacing = 0; spTableCntl.Width = new Unit(100, UnitType.Percentage); spTableCntl.CssClass = "ms-formtable"; SPContext controlContext = SPContext.GetContext(this.Context, ItemId, ListId, pWeb); foreach (SPField listField in fields) { string fieldDisplayName = listField.Title; string fieldInternalName = listField.InternalName; //Skip if the field is system field or hidden if (listField.Hidden || listField.ShowInVersionHistory == false) continue; //Skip if the control mode is display and field is read-only if (_ControlMode != SPControlMode.Display && listField.ReadOnlyField == true) continue; FieldLabel fieldLabel = new FieldLabel(); fieldLabel.FieldName = listField.InternalName; fieldLabel.ListId = ListId; BaseFieldControl fieldControl = listField.FieldRenderingControl; fieldControl.ListId = ListId; //Assign unique id using Field Internal Name fieldControl.ID = string.Format("Field_{0}", fieldInternalName); fieldControl.EnableViewState = true; //Assign control mode fieldLabel.ControlMode = _ControlMode; fieldControl.ControlMode = _ControlMode; switch (_ControlMode) { case SPControlMode.New: fieldLabel.RenderContext = SPContext.GetContext(pWeb); fieldControl.RenderContext = SPContext.GetContext(pWeb); break; case SPControlMode.Edit: case SPControlMode.Display: fieldLabel.RenderContext = controlContext; fieldLabel.ItemContext = controlContext; fieldLabel.ItemId = ItemId; fieldControl.RenderContext = controlContext; fieldControl.ItemContext = controlContext; fieldControl.ItemId = ItemId; break; } //Add row to display a field row TableRow spCntlRow = new TableRow(); spTableCntl.Rows.Add(spCntlRow); //Add the cells for containing field lable and control TableCell spCellLabel = new TableCell(); spCellLabel.Width = new Unit(30, UnitType.Percentage); spCellLabel.CssClass = "ms-formlabel"; spCntlRow.Cells.Add(spCellLabel); TableCell spCellControl = new TableCell(); spCellControl.Width = new Unit(70, UnitType.Percentage); spCellControl.CssClass = "ms-formbody"; spCntlRow.Cells.Add(spCellControl); //Add the control to the table cells spCellLabel.Controls.Add(fieldLabel); spCellControl.Controls.Add(fieldControl); //Add description if there is any in case of New and Edit Mode if (_ControlMode != SPControlMode.Display && listField.Description != string.Empty) { FieldDescription fieldDesc = new FieldDescription(); fieldDesc.FieldName = fieldInternalName; fieldDesc.ListId = ListId; spCellControl.Controls.Add(fieldDesc); } //Disable Name(Title) in Edit Mode if (_ControlMode == SPControlMode.Edit && fieldDisplayName == "Name") { TextBox txtTitlefield = (TextBox)fieldControl.Controls[0].FindControl("TextField"); txtTitlefield.Enabled = false; } } fields = null; } First of all, I have declared List object and got list fields in field collection object called “fields”. Then I have added a table for the container of all controls and assign CSS class as "ms-formtable" so that it gives consistent look and feel of SharePoint. Now it’s time to navigate through all fields and add them if required. Here we don’t need to add hidden or system fields. We also don’t want to display read-only fields in new and edit forms. Following lines does this job. //Skip if the field is system field or hidden if (listField.Hidden || listField.ShowInVersionHistory == false) continue; //Skip if the control mode is display and field is read-only if (_ControlMode != SPControlMode.Display && listField.ReadOnlyField == true) continue; Let’s move to the next line of code. FieldLabel fieldLabel = new FieldLabel(); fieldLabel.FieldName = listField.InternalName; fieldLabel.ListId = ListId; BaseFieldControl fieldControl = listField.FieldRenderingControl; fieldControl.ListId = ListId; //Assign unique id using Field Internal Name fieldControl.ID = string.Format("Field_{0}", fieldInternalName); fieldControl.EnableViewState = true; //Assign control mode fieldLabel.ControlMode = _ControlMode; fieldControl.ControlMode = _ControlMode; We have used “FieldLabel” control for displaying field title. The advantage of using Field Label is, SharePoint automatically adds red star besides field label to identify it as mandatory field if there is any. Here is most important part to understand. The “BaseFieldControl”. It will render the respective web controls according to type of the field. For example, if it’s single line of text, then Textbox, if it’s look up then it renders dropdown. Additionally, the “ControlMode” property tells compiler that which mode (display/edit/new) controls need to be rendered with. In display mode, it will render label with field value. In edit mode, it will render respective control with item value and in new mode it will render respective control with empty value. Please note that, it’s not always the case when dropdown field will be rendered for Lookup field or Choice field. You need to understand which controls are rendered for which list fields. I am planning to write a separate blog which I hope to publish it very soon. Moreover, we also need to assign list field specific properties like List Id, Field Name etc to identify which SharePoint List field is attached with the control. switch (_ControlMode) { case SPControlMode.New: fieldLabel.RenderContext = SPContext.GetContext(pWeb); fieldControl.RenderContext = SPContext.GetContext(pWeb); break; case SPControlMode.Edit: case SPControlMode.Display: fieldLabel.RenderContext = controlContext; fieldLabel.ItemContext = controlContext; fieldLabel.ItemId = ItemId; fieldControl.RenderContext = controlContext; fieldControl.ItemContext = controlContext; fieldControl.ItemId = ItemId; break; } Here, I have separate code for new mode and Edit/Display mode because we will not have Item Id to assign in New Mode. We also need to set CSS class for cell containing Label and Controls so that those controls get rendered with SharePoint theme. spCellLabel.CssClass = "ms-formlabel"; spCellControl.CssClass = "ms-formbody"; “FieldDescription” control is used to add field description if there is any. Now it’s time to add some more customization, //Disable Name(Title) in Edit Mode if (_ControlMode == SPControlMode.Edit && fieldDisplayName == "Name") { TextBox txtTitlefield = (TextBox)fieldControl.Controls[0].FindControl("TextField"); txtTitlefield.Enabled = false; } The above code will disable the title field in edit mode. You can add more code here to achieve more customization according to your requirement. Some of the examples are as follow: //Adding post back event on UserField to auto populate some other dependent field //in new mode and disable it in edit mode if (_ControlMode != SPControlMode.Display && fieldDisplayName == "Manager") { if (fieldControl.Controls[0].FindControl("UserField") != null) { PeopleEditor pplEditor = (PeopleEditor)fieldControl.Controls[0].FindControl("UserField"); if (_ControlMode == SPControlMode.New) pplEditor.AutoPostBack = true; else pplEditor.Enabled = false; } } //Add JavaScript Event on Dropdown field. Don't forget to add the JavaScript function on the page. if (_ControlMode == SPControlMode.Edit && fieldDisplayName == "Designation") { DropDownList ddlCategory = (DropDownList)fieldControl.Controls[0]; ddlCategory.Attributes.Add("onchange", string.Format("javascript:DropdownChangeEvent('{0}');return false;", ddlCategory.ClientID)); } Following are the screenshots of my Custom ListForm WebPart. Let’s play a game, check out your OOB List forms of SharePoint, compare with these screens and find out differences. DispForm.aspx: EditForm.aspx: NewForm.aspx: Enjoy the SharePoint Soup!!!

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How do engines avoid "Phase Lock" (multiple objects in same location) in a Physics Engine?

- by C0M37

Let me explain Phase Lock first: When two objects of non zero mass occupy the same space but have zero energy (no velocity). Do they bump forever with zero velocity resolution vectors or do they just stay locked together until an outside force interacts? In my home brewed engine, I realized that if I loaded a character into a tree and moved them, they would signal a collision and hop back to their original spot. I suppose I could fix this by implementing impulses in the event of a collision instead of just jumping back to the last spot I was in (my implementation kind of sucks). But while I make my engine more robust, I'm just curious on how most other physics engines handle this case. Do objects that start in the same spot with no movement speed just shoot out from each other in a random direction? Or do they sit there until something happens? Which option is generally the best approach?

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Overloading interface buttons, what are the best practices?

- by XMLforDummies

Imagine you'll have always a button labeled "Continue" in the same position in your app's GUI. Would you rather make a single button instance that takes different actions depending on the current state? private State currentState = State.Step1; private ContinueButton_Click() { switch(currentState) { case State.Step1: DoThis(); currentState = State.Step2; break; case State.Step2: DoThat(); break; } } Or would you rather have something like this? public Form() { this.ContinueStep2Button.Visible = false; } private ContinueStep1Button_Click() { DoThis(); this.ContinueStep1Button.Visible = false; this.ContinueStep2Button.Visible = true; } private ContinueStep2Button_Click() { DoThat(); }

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Need help about Drag a sprite with Animation (Cocos2d)

- by Zishan

I want to play an animation when someone drag a sprite from it's default position to another selected position. If he drag half of the selected position then animation will be play half. Example, I have 15 Frames of a animation and have a projectile arm. The projectile arm can be rotate maximum 30°, if someone rotate the arm 2° then animation sprite will be show 2nd frame, if rotate 12° then animation sprite will be show 6th frame.... and so on. Also when he release the arm, then the arm will be reverse back to it's default position and animation frames also will be reverse back to it's default first frame. I am new on cocos2d.I know how to make an animation and how to drag a sprite but I have no idea how to do this. Can anyone Please give me any idea or any tutorial how to do this, it will be very helpful for me. Thank you in advance.

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Best Way To Develop Robust Cross-Platform Application?

- by Clay

Windows C programmer here (going back to 1992 and Windows95 back when it was called Windows93). Can function in C++, but mostly still a C programmer. Looking to build a cross-platform casual game. Very numbers heavy with only a few artistic embellishments and animations, so perhaps a development environment for business apps might be the best option. Or an easy-to-use 2D game dev platform. Target platforms: Windows, Mac, MS Tablet, iPhone, iPad, Android. I currently develop on Windows with Visual Studio 2012, but we could spend up to $50K on hardware/software/middleware if necessary. Not very competent getting open-source software working. Would rather pay the money and jump right into app development. Recommendations?

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Recover personal PGP key from old home

- by Oli

Many lives ago, I created a GPG key to sign the Ubuntu Code of Conduct on Launchpad. I haven't really used it since. Some time later, I backed up my home and started fresh. That was all back in 2009. I still have the backup but now I'm starting to play around with Quickly and upload things to Launchpad, I could really do with having my PGP key back. I don't really know how the key is organised or where it's stored, but I'd like to recover my old key rather than generate a new one. Any idea where to start?

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How can I disable Hibernate completely?

- by Lekensteyn

I have seen the answer on How to disable hibernating?, but I have no such file. Possibly because that suggestion was written for Ubuntu, not Kubuntu (KDE, not Gnome). I do not have a swap on my encrypted SSD, my system freezes (cannot even change Caps Lock) if I accidentally press the "Hibernate" button at "Energy management". My keyboard has a Hibernate button (Fn + F4) next to the volume control buttons and every time I press the wrong key, the system will freeze after. So, what is the correct way to disable it? If there is no solution, a work-around is welcome too.

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Run Oracle E-Business Suite Period Close Diagnostic

- by Get Proactive Customer Adoption Team

Untitled Document Be Proactive & Save Time—Use the Period Close Diagnostic During the Month Have you ever closed your books at the end of the month and, due to problems with your Oracle E-Business Suite Period Close, you found yourself working all night or all weekend to resolve your issues? You can avoid issues by running the Oracle E-Business Suite Period Close Diagnostics throughout the month, prior to closing Oracle Financial Assets, General Ledger, Payables, and/or Receivables. You can identify issues that will interfere with your period close early, preventing last minute fire drills. Correct your errors or, if you need Oracle Support’s assistance, attach the output to a service request for faster resolution by the support engineer. Oracle E-Business Suite Diagnostics are included in your Oracle Premier Support agreement at no extra charge. They are proactive, easy to use, tools provided by Oracle Support to ease the gathering and analyzing of information from your E-Business Suite, specific to an existing issue or setup. Formatted output displays the information gathered, the findings of the analysis, and the appropriate actions to take if necessary. These tools are designed for both the functional and technical user, providing no EBS administration features, so you can safely assign this responsibility to users who are not administrators. A good place to start with the Support Diagnostics is the install patch Note 167000.1. Everything you need is in this patch and you install it on top of your E-Business Suite. If you are on EBS 12.0.6 or below, Oracle delivers the diagnostic tests in a standard Oracle patch and you apply it using the adpatch utility. If you are on EBS release 12.1.1 or above, your diagnostics are already there. Oracle E-Business Suite Diagnostics: Prevent Issues—resolving configuration and data issues that would cause processes to fail Identify Issues Quickly—resolving problems without the need to contact Oracle Support Reduce Resolution Time—minimizing the time spent to resolve an issue by increasing support engineer efficiency In the example below, you will see how to run the EBS Period Close Diagnostic step-by-step using an SQLGL Period Closing Activity Test. This allows you to check throughout the month to identify and resolve any issue that might prevent closing the period in the General Ledger on schedule. Click the Select Application button. Select your Application. In this example, we will use the Period Close test. Scroll down to Period Close Place a check mark in the Period Closing box in the Select column. Click the Execute button at the bottom of the page Input the parameters. Click the Submit button Click the Refresh button, until the Status of the test changes from “In Progress” to “Completed” Click the icon under, View Report to view the test results The report will complete successfully or show completed with errors. The report will show where the error is located, what the error is, and what action(s) to take for resolution. Remember, if you need to work with Oracle Support to resolve your issue, attach the report to your Service Request so the engineer can start working the issue. Completed with errors Completed successfully with no errors If you have questions, please ask in the E-Business Suite Category’s Diagnostic Tools Community. You may find the answer waiting for you in a prior community discussion or in one of the resources posted by an Oracle Support moderator. Oracle’s Period Close Diagnostic, and the other E-Business Suite Diagnostics, save you time and help keep you on schedule. If you run the Period Close Diagnostic throughout the month, you can identify issues to resolve and get help, if needed. When opening a Service Request, attaching the output from the diagnostic report, speeds resolution. With the issues resolved ahead of time, your Period Close should complete without errors. Avoiding the unexpected, helps to close your books on time and without late nights or working through your weekend. Recommended Reads E-Business Suite Diagnostics Period / Year End Close [ID 402237.1] lists all of the Closing Period Diagnostic Tests. I highly recommend that customers execute these tests prior to closing a period. The period closing tests listed in this document help you identify known issues that prevent a successful period close. Use these tests prior to closing a period. To learn about all the available EBS Diagnostics, please review the E-Business Suite Diagnostics Overview [ID 342459.1].

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App_Offline.htm, taking site down for maintenance

- by Vipin

There is much simpler and graceful way to shut down a site while doing upgrade to avoid the problem of people accessing site in the middle of a content update. Basically, if you place file with name 'app_offline.htm' with below contents in the root of a web application directory, ASP.NET will shut-down the application, and stop processing any new incoming requests for that application. ASP.NET will also then respond to all requests for dynamic pages in the application by sending back the content of the app_offline.htm file (for example: you might want to have a “site under construction” or “down for maintenance” message). Then after upgrade, just rename/delete app_offline.htm file…and the site would be back to normal. Just remember that the size of the file should be greater than 512 bytes, doesn't matter even if you add some comments to it to push the byte size as long as it's of the size greater than 512 - it'll work fine. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html http://www.w3.org/1999/xhtml"http://www.w3.org/1999/xhtml" ><head> <title>Maintenance Mode - Outage Message</title></head><body> <h1>Maintenance Mode</h1> <p>We're currently undergoing scheduled maintenance. We will come back very shortly.</p> <p>Sorry for the inconvenience!</p> </body></html>

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Disabling Navigation Flicks in WPF

- by Brian Genisio's House Of Bilz

I am currently working on a multi-touch application using WPF. One thing that has been irritating me with this development is an automatic navigation forward/back command that is bound to forward and backwards flicks. Many of my touch-based interactions were being thwarted by gestures picked up by WPF as navigation. I just wanted to disable this behavior. My programmatic back/forward calls are not affected by this change, which is nice. Here is how I did it: In my main window, I added the following command bindings:<NavigationWindow.CommandBindings> <CommandBinding Command="NavigationCommands.BrowseBack" Executed="DoNothing" /> <CommandBinding Command="NavigationCommands.BrowseForward" Executed="DoNothing" /> </NavigationWindow.CommandBindings> Then, the DoNothing method in the code-behind does nothing:private void DoNothing(object sender, ExecutedRoutedEventArgs e) { } There may be a better way to do this, but I haven’t found one.

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RPi and Java Embedded GPIO: Sensor Connections for Java Enabled Interface

- by hinkmond

Now we're ready to connect the hardware needed to make a static electricity sensor for the Raspberry Pi and use Java code to access it through a GPIO port. First, very carefully bend the NTE312 (or MPF-102) transistor "gate" pin (see the diagram on the back of the package or refer to the pin diagram on the Web). You can see it in the inset photo on the bottom left corner. I bent the leftmost pin of the NTE312 transistor as I held the flat part toward me. That is going to be your antenna. So, connect one of the jumper wires to the bent pin. I used the dark green jumper wire (looks almost black; coiled at the bottom) in the photo. Then push the other 2 pins of the transistor into your breadboard. Connect one of the pins to Pin # 1 (3.3V) on the GPIO header of your RPi. See the diagram if you need to glance back at it. In the photo, that's the orange jumper wire. And connect the final unconnected transistor pin to Pin # 22 (GPIO25) on the RPi header. That's the blue jumper wire in my photo. For reference, connect the LED anode (long pin on a common anode LED/short pin on a common cathode LED, check your LED pin diagram) to the same breadboard hole that is connecting to Pin # 22 (same row of holes where the blue wire is connected), and connect the other pin of the LED to GROUND (row of holes that connect to the black wire in the photo). Test by blowing up a balloon, rubbing it on your hair (or your co-worker's hair, if you are hair-challenged) to statically charge it, and bringing it near your antenna (green wire in the photo). The LED should light up when it's near and go off when you pull it away. If you need more static charge, find a co-worker with really long hair, or rub the balloon on a piece of silk (which is just as good but not as fun). Next blog post is where we do some Java coding to access this sensor on your RPi. Finally, back to software! Ha! Hinkmond

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