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  • New line in GridView cell

    - by Chris
    I'm binding a GridView to an LINQ query. Some of the fields in the objects created by the LINQ statement are strings, and need to contain new lines. Apparently, GridView HTML-encodes everything in each cell, so I can't insert a <br /> to create a new line within a cell. How do I tell GridView not to HTML encode the contents of cells? Maybe I should use a different control instead?

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  • WEBrick::HTTPStatus::LengthRequired error when accessing create method in controller

    - by Chris Bisignani
    I have a very simple controller set up: class LibrariesController < ApplicationController ... def create @user.libraries << Library.new(params) @user.save render :json => "success!" end ... end Basically, whenever I try to access the create method of LibrariesController using HTTParty.post I get a WEBrick::HTTPStatus::LengthRequired error on the server. The method is not even being accessed! Here is the stack trace (this is the full output server side - notice that the controller isn't even being accessed): [2010-04-16 00:35:39] ERROR WEBrick::HTTPStatus::LengthRequired [2010-04-16 00:35:39] ERROR HTTPRequest#fixup: WEBrick::HTTPStatus::LengthRequired occured. [2010-04-16 00:35:39] ERROR NoMethodError: private method `gsub!' called for #<Class:0x2362160> /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/htmlutils.rb:17:in `escape' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/httpresponse.rb:232:in `set_error' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/httpserver.rb:70:in `run' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:162:in `start' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:95:in `start' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:92:in `each' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:92:in `start' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:23:in `start' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/1.8/webrick/server.rb:82:in `start' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/webrick.rb:14:in `run' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:111 /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /usr/local/Cellar/ruby_187/1.8.7-p249/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' script/server:3 I'm running rails 2.3.5 and ruby 1.8.7. Any help would be greatly appreciated. Let me know if you need more details.

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  • Rails: periodically use HEAD to check for page changes

    - by Chris
    I have a Rails app implementing a game, so it's expected that a player will leave a browser open at the game page. When player Alan takes an action himself, I use AJAX requests to update the game page Alan is viewing to reflect the new state. However, when another player (Bob) takes an action, I don't have (or want) a mechanism to push the change to Alan's view. I would like Alan's page to periodically poll the Rails server to find if there have been any changes since last reload, and to reload the page (either via a whole-page GET or an AJAX call) if not. In order to play nicely with caches and proxies, I'd like to do this by issuing a periodic HTTP HEAD request, get Rails to work out the timestamp of the last change (trivially available from my DB) and respond with that in the Last-Modified header; then have the client-side act on that timestamp. How can I go about doing this?

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  • Troubleshooting a COM+ application deadlock

    - by Chris Karcher
    I'm trying to troubleshoot a COM+ application that deadlocks intermittently. The last time it locked up, I was able to take a usermode dump of the dllhost process and analyze it using WinDbg. After inspecting all the threads and locks, it all boils down to a critical section owned by this thread: ChildEBP RetAddr Args to Child 0deefd00 7c822114 77e6bb08 000004d4 00000000 ntdll!KiFastSystemCallRet 0deefd04 77e6bb08 000004d4 00000000 0deefd48 ntdll!ZwWaitForSingleObject+0xc 0deefd74 77e6ba72 000004d4 00002710 00000000 kernel32!WaitForSingleObjectEx+0xac 0deefd88 75bb22b9 000004d4 00002710 00000000 kernel32!WaitForSingleObject+0x12 0deeffb8 77e660b9 000a5cc0 00000000 00000000 comsvcs!PingThread+0xf6 0deeffec 00000000 75bb21f1 000a5cc0 00000000 kernel32!BaseThreadStart+0x34 The object it's waiting on is an event: 0:016> !handle 4d4 f Handle 000004d4 Type Event Attributes 0 GrantedAccess 0x1f0003: Delete,ReadControl,WriteDac,WriteOwner,Synch QueryState,ModifyState HandleCount 2 PointerCount 4 Name <none> No object specific information available As far as I can tell, the event never gets signaled, causing the thread to hang and hold up several other threads in the process. Does anyone have any suggestions for next steps in figuring out what's going on? Now, seeing as the method is called PingThread, is it possible that it's trying to ping another thread in the process that's already deadlocked? UPDATE This actually turned out to be a bug in the Oracle 10.2.0.1 client. Although, I'm still interested in ideas on how I could have figured this out without finding the bug in Oracle's bug database.

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  • ASP with Crystal Report 9 hangs on .NET framework 3.5

    - by Chris Yang
    We have an ASP (not ASP.NET) application running on Windows 2003 server. One of the functions of the application is to generate reports using Crystal Report 9. It has been working without any problem with .NET Framework 2.0 and now it is required to install .NET Framework 3.5 SP1 on the server but after we installed the 3.5 SP1, every time we run the application the Crystal report is not generated and the web page hangs so we have to recycle the application pool in IIS to get the application back going. Does anyone have any idea/solution to this problem? Any help will be greatly appreciate.

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  • Getting browser to make an AJAX call ASAP, while page is still loading

    - by Chris
    I'm looking for tips on how to get the browser to kick off an AJAX call as soon as possible into processing a web page, ideally before the page is fully downloaded. Here's my approximate motivation: I have a web page that takes, say, 5 seconds to load. It calls a web service that takes, say, 10 seconds to load. If loading the page and calling the web service happened sequentially, the user would have to wait 15 seconds to see all the information. However, if I can get the web service call started before the 5 second page load is complete, then at least some of the work can happened in parallel. Ideally I'd like as much of the work to happen in parallel as possible. My initial theory was that I should place the AJAX-calling javascript as high up as possible in the web page HTML source (being mindful of putting it after the jquery.js include, because I'm making the call using jquery ajax). I'm also being mindful not to wrap the AJAX call in a jquery ready event handler. (I mention this because ready events are popular in a lot of jquery example code.) However, the AJAX call still doesn't seem to get kicked off as early as I'm hoping (at least as judged by the Google Chrome "Timeline" feature), so I'm wondering what other considerations apply. One thing that might potentially be detrimental is that the AJAX call is back to the same web server that's serving the original web page, so I might be in danger of hitting a browser limit on the # of HTTP connections back to that one machine? (The HTML page loads a number of images, css files, etc..)

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  • Javascript image copy protection

    - by Chris
    Is there a way to protect your images from being copied, specifically their URL's. So that if someone were to try right click the image and copy the URL I could pop up an embed box, or perhaps specify my own particular copy code so that I dictate the terms of the copy? An alternate to this would be popping up a custom dialog box on right click with copy / embed options... How would one do this?

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  • WPF Choppy Animation

    - by Chris Dunaway
    WPF Windows-XP SP3 I'm having a problem with a simple WPF animation. I use the following Xaml code (in XamlPad and also in a WPF project): <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:sys="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Border Name="MyBorder" BorderThickness="10" BorderBrush="Blue" CornerRadius="10" Background="DarkRed" > <Rectangle Name="MyRectangle" Margin="10" StrokeDashArray="2.0,1.0" StrokeThickness="10" RadiusX="10" RadiusY="10" Stroke="Black" StrokeDashOffset="0"> <Rectangle.Triggers> <EventTrigger RoutedEvent="Rectangle.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="MyRectangle" Storyboard.TargetProperty="StrokeDashOffset" From="0.0" To="3.0" Duration="0:0:1" RepeatBehavior="Forever" Timeline.DesiredFrameRate="30" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Rectangle.Triggers> </Rectangle> </Border> </Page> It has the effect of causing the border to animate around the rectangle. After a fresh reboot of the machine, this animation is nice and smooth. However, I tend to leave my machine on all the time and after a period time elapses (I don't know how long), the animation starts stuttering and becomes choppy. I thought that it may be memory or resource issues, but after shutting down all other apps and any services that seem unnecessary, the stuttering still continues. However, after a system reboot, the animation is smooth again! I get the same symptoms in a WPF app or in XamlPad. In the case of the app, it doesn't seem to make any difference whether I run in the debugger or if I run the executable directly. I applied the patch at this link: http://support.microsoft.com/kb/981741 and I thought that it had taken care of the issue, but it seems not to have. I have seen some posts that might indicate that using transparency might affect animation, but as you can see, my xaml does not use transparency. Can anyone give me some suggestions on how to determine what the problem is? Are there any WPF diagnostic tools that might help? UPDATE: I have checked my video drivers and they are the latest version. (nVidia GeForce 8400 GS)

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  • Automatically enabling an output filter in Apache module

    - by Chris
    I am developing a module for Apache which contains an output filter that I would like to always be invoked so that it can determine whether to process the request data or just pass the data along. Since I would like the module to be compatible with Apache 2.0 as well as 2.2, I do not want to use mod_filter. Ideally I would like to do this without having to explicitly enable the filter through the httpd.conf file, but I have so far not been able to find any example of this. Is this at all possible? Can someone please point me to a suitable example?

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  • .NET EventHandlers - Generic or no?

    - by Chris Marasti-Georg
    Every time I start in deep in a C# project, I end up with lots of events that really just need to pass a single item. I stick with the EventHandler/EventArgs practice, but what I like to do is have something like: public delegate void EventHandler<T>(object src, EventArgs<T> args); public class EventArgs<T>: EventArgs { private T item; public EventArgs(T item) { this.item = item; } public T Item { get { return item; } } } Later, I can have my public event EventHandler<Foo> FooChanged; public event EventHandler<Bar> BarChanged; However, it seems that the standard for .NET is to create a new delegate and EventArgs subclass for each type of event. Is there something wrong with my generic approach? EDIT: The reason for this post is that I just re-created this in a new project, and wanted to make sure it was ok. Actually, I was re-creating it as I posted. I found that there is a generic EventHandler<TEventArgs, so you don't need to create the generic delegate, but you still need the generic EventArgs<T class, because TEventArgs: EventArgs. Another EDIT: One downside (to me) of the built-in solution is the extra verbosity: public event EventHandler<EventArgs<Foo>> FooChanged; vs. public event EventHandler<Foo> FooChanged; It can be a pain for clients to register for your events though, because the System namespace is imported by default, so they have to manually seek out your namespace, even with a fancy tool like Resharper... Anyone have any ideas pertaining to that?

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  • Add a background color to text, but with space blank space between lines of paragraph

    - by Chris
    Hi, I was wondering if something was possible to do in CSS. Basically i want to recreate the text on the RHS of the image using html/css, but currently I'm getting the LHS of the image. The HTML: <div id="banner"> <div id="text"> <p>This is an example of what I have</p> </div> </div> The CSS: div#banner { background: green; width:300px; height:300px;} div#text { margin: 20px auto; } div#text p { background:#fff; padding: 5px; margin: 5px; font-size: 2em; } Now I realise that this can be done already either by: Using an image Using separate p tags (By Point 2 I mean: <div id="banner"> <div id="text"> <p>This is an</p> <p>example of</p> <p>what I have</p> </div> </div> ) But what I would really like to know is if it's actually possible to do what is on the RHS of the image, using only css and a single p tag?

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  • Bazaar + CruiseControl.Net

    - by Chris Gill
    I want to setup CruiseControl.Net at my company. We currently have several .net solutions stored in a Bazaar repository and I want to use MSBuild to build each solution. This didn't seem too controversial, but I can't see an easy way of binding CruiseControl.Net to Bazaar. There seems to have been a plugin to do this at http://www.sorn.net/projects/bazaar-ccnet but this link no longer works and I cant seem to find the plugin anywhere else I was going to use the External source control type, but bazaar seems to bork at the GETMODS parameter being passed to it My current thought now is to create a separate project to pull modifications from bazaar using an Exec task, then create another project to run a FileSystem source control check on that directory. I'm moderately sure I can get this to work, but it seems a bit hacky. I don't mind writing a new Bazaar plugin for CruiseControl.Net but I cant find where to start with this. My questions are do you run these two in combination, if so how do you do it? If you don't run these together, do you have any recommendations on a good approach? Is there any documentation or good starting point that I could use to write a bazaar plugin? Am I an idiot for trying to use CruiseControl.Net? Should I be using something else?

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  • Need to Release UIWebView Delegate?

    - by Chris
    I have a UIWebView named wView. I want to use webViewDidFinishLoad: in my class, so I am setting the class as the delegate for wView by using this line: wView.delegate = self; Everything loads properly, but when I close the UIWebView, the App crashes. If I comment out the wView.delegate = self, it works and does not crash, but then I can't use webViewDidFinishLoad: - any ideas? Do I need to release something?

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  • BackgroundWorker Not working in VSTO

    - by Chris
    I have a background worker. Before I invoke the worker I disable a button and make a gif visible. I then invoke the runworkerasync method and it runs fine until comleteion. On the 'RunWorkerCompleted()' I get a cross thread error. Any idea why? private void buttonRun_Click(object sender, EventArgs e) { if (comboBoxFiscalYear.SelectedIndex != -1 && !string.IsNullOrEmpty(textBoxFolderLoc.Text)) { try { u = new UpdateDispositionReports( Convert.ToInt32(comboBoxFiscalYear.SelectedItem.ToString()) , textBoxFolderLoc.Text , Properties.Settings.Default.TemplatePath , Properties.Settings.Default.ConnStr); this.buttonRun.Enabled = false; this.pictureBox1.Visible = true; BackgroundWorker bw = new BackgroundWorker(); bw.DoWork += new DoWorkEventHandler(bw_DoWork); bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted); bw.RunWorkerAsync(); //backgroundWorker1.RunWorkerAsync(); } catch (Exception ex) { MessageBox.Show("Unable to process.\nError:" + ex.Message, Properties.Settings.Default.AppName); } } } void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { buttonRun.Enabled = true; pictureBox1.Visible = false; } void bw_DoWork(object sender, DoWorkEventArgs e) { u.Execute(); }

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  • PHP MYSQLI query error?

    - by Chris Leah
    Hey This is my login script, using PHP5 and MYSQLi, I just had help spotting errors in my query, but still it will not let me login, even though the username and password are correct and in the database, it just keeps returning the error: your username and password do not match any in our db. But I know they do lol...could any body spot the problem? //Check if the form has been submitted if (isset($_POST['login'])) { //Check if username and password are empty if ($_POST['username']!='' && $_POST['password']!='') { //Create query to check username and password to database $validate_user = $mysqli->query('SELECT id, username, password, active FROM users WHERE = username = "'.$mysqli->real_escape_string($_POST['username']).'" AND password = "'.$mysqli->real_escape_string(md5($_POST['password'])).'"'); //We check if the query returns true if ($validate_user->num_rows == 1) { $row = $validate_user->fetch_assoc(); //Check if the user has activated there account if ($row['activated'] == 1) { $_SESSION['id'] = $row['id']; $_SESSION['logged_in'] = true; Header('Location: ../main/index.php'); } //Show this error if activation returns as 0 else { $error = '<p class="error">Please activate your account.</p>'; } } //Show this error if the details matched any in the db else { $error = '<p class="error">Your username and password are not in our database!</p>'; } } //Show this error if the username and password field have not been entered else { $error = '<p class="error">Please enter your username and password.</p>'; } }

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  • Bash: Terminate on Timeout/File Overflow while Executing Command

    - by Chris
    I'm writing a mock-grading script in bash. It's supposed to execute a C program which will give some output (which I redirect to a file.) I'm trying to (1) make it timeout after a certain duration and also (2) terminate if the output file reaches a certain file size limit. Not sure how to go about either of these. Any help? Thanks.

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  • Legal uses of setjmp and GCC

    - by Chris Lutz
    Using GCC (4.0 for me), is this legal: if(__builtin_expect(setjmp(buf) != 0, 1)) { // handle error } else { // do action } I found a discussion saying it caused a problem for GCC back in 2003, but I would imagine that they would have fixed it by now. The C standard says that it's illegal to use setjmp unless it's one of four conditions, the relevant one being this: one operand of a relational or equality operator with the other operand an integer constant expression, with the resulting expression being the entire controlling expression of a selection or iteration statement; But if this is a GCC extension, can I guarantee that it will work under for GCC, since it's already nonstandard functionality? I tested it and it seemed to work, though I don't know how much testing I'd have to do to actually break it. (I'm hiding the call to __builtin_expect behind a macro, which is defined as a no-op for non-GCC, so it would be perfectly legal for other compilers.)

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  • API to determine cell carrier?

    - by Chris Lively
    Is there a free API or some other way to determine what carrier a cell phone number is registered with? I'd like my application to broadcast text messages without them picking their carrier from a list. UPDATE: Interestingly, a coworker found the answer: http://developer.whitepages.com/ UPDATE2: Well the whitepages license agreement is so restrictive that you can't build an app for it. Any other ideas?

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  • Random value from Flags enum

    - by Chris Porter
    Say I have a function that accepts an enum decorated with the Flags attribute. If the value of the enum is a combination of more than one of the enum elements how can I extract one of those elements at random? I have the following but it seems there must be a better way. [Flags] enum Colours { Blue = 1, Red = 2, Green = 4 } public static void Main() { var options = Colours.Blue | Colours.Red | Colours.Green; var opts = options.ToString().Split(','); var rand = new Random(); var selected = opts[rand.Next(opts.Length)].Trim(); var myEnum = Enum.Parse(typeof(Colours), selected); Console.WriteLine(myEnum); Console.ReadLine(); }

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  • Javascript WebGL error

    - by Chris
    Hi I can load 400 textured cylinders using o3d webl, as soon as I push the test upto 600 cylinders I get the following.. uncaught exception: [Exception... "Could not convert JavaScript argument arg 0 [nsIDOMWebGLRenderingContext.getShaderInfoLog" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT-JS)" location: "JS frame :: file:///d:/o3d-webgl/effect.js :: :: line 181" data: no) This is the error from minefield, does anyone know what this means? This is the function: o3d.Effect.prototype.bindAttributesAndLinkIfReady = function() { if (this.vertexShaderLoaded_ && this.fragmentShaderLoaded_) { var semanticMap = o3d.Effect.semanticMap_; for (var name in semanticMap) { this.gl.bindAttribLocation( this.program_, semanticMap[name].gl_index, name); } this.gl.linkProgram(this.program_); if (!this.gl.getProgramParameter(this.program_, this.gl.LINK_STATUS)) { var log = this.gl.getShaderInfoLog(this.program_); this.gl.client.error_callback( 'Program link failed with error log:\n' + log); } this.getUniforms_(); this.getAttributes_(); } }; It falls over on ... var log = this.gl.getShaderInfoLog(this.program_);

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