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  • Binding IsReadOnly using IValueConverter

    - by mastur cheef
    Maybe I'm misunderstanding how to use an IValueConverter or data binding (which is likely), but I am currently trying to set the IsReadOnly property of a DataGridTextColumn depending on the value of a string. Here is the XAML: <DataGridTextColumn Binding="{Binding Path=GroupDescription}" Header="Name" IsReadOnly="{Binding Current, Converter={StaticResource currentConverter}}"/> And here is my converter: public class CurrentConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { string s = value as string; if (s == "Current") { return false; } else { return true; } } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotSupportedException(); } } Currently, the column is always editable, the converter seems to do nothing. Does anyone have some thoughts as to why this is happening?

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  • Java script simple question

    - by butteff
    Sorry for my bad English! I have got one question. Why when i click on the button at second time, Occurs nothing? But at first click everything is good! <form name="alert"><input type="text" name="hour"><input type="text" name="min"><input type="button" value="ok" onclick="budilnik(this.form)"> <script type="text/javascript"> function budilnik(form) { budilnik=1; min=form.min.value; hour=form.hour.value; alert (min+' '+hour+' '+budilnik); } </script>

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  • Rails: creating a custom data type / creating a shorthand

    - by Shyam
    Hi, I am wondering how I could create a custom data type to use within the rake migration file. Example: if you would be creating a model, inside the migration file you can add columns. It could look like this: def self.up create_table :products do |t| t.column :name, :string t.timestamps end end I would like to know how to create something like this: t.column :name, :my_custom_data_type The reason for this to create for example a "currency" type, which is nothing more than a decimal with a precision of 8 and a scale of 2. Since I use only MySQL, the solution for this database is sufficient enough. Thank you for your feedback and comments!

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  • Taking video from video camera and displaying it with MPMoviePlayerController IPhone SDK

    - by Daniel
    Has anyone tried taking a video from the camera and then using the video player provided to play it? When you take the video in portrait mode, sometimes the movie will play (when the player puts it in landscape mode) and when it puts it in portrait mode you cannot view the movie all you hear is sound,sometimes in landscape mode is flickers and does not play right, has anyone encountered this and found a way to fix it? My code to play the video looks like this: - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { NSURL *urls=[info objectForKey:@"UIImagePickerControllerMediaURL"] ; moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:[info urls]]; if (moviePlayer) { [moviePlayer play]; } } I checked settings on the docs nothing seems like it would fix this...Thanks

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  • How to start a process from within a windows service

    - by BaBu
    I want to pop a browser with a given url from within a windows service. Like so: System.Diagnostics.Process.Start("http://www.venganza.org/"); Works fine when running in a console but not from within the service. No error messages, no exceptions, the Process.Start() command just seem to do nothing. It smells of some security issue, maybe something with the service properties and/or logon options? Annoying stuff this... Anybody? (Oh, and on windows 7/.NET framework 3.5.)

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  • Back again to use Rails 2.3.5 from Rails 3

    - by dreame4
    Hi, Recently, I had seen information about Rails 3.0 beta and I had wanted to trial it. So I used gem update and installed this version. But now, I need to go back to Rails 2.3.5. How could I do it? I was thinking about this two solutions: Uninstalling Rails 3. I read that somebody removed Rails 3 by using gem uninstall but he came across some problems then. Did anyone try to remove it in this way? Using different versions Rails at the same time. Is it possible at all? It will resolve all my problems but I could find nothing about this issue in google. Hope somebody could help me :) Greetings, dreame4

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  • Can I have Visual Studio IDE auto-comple brackets?

    - by Alex K
    Suppose I have a line of code that starts like the following: Func1(Func2(Func3 Is it possible to set up Visual Studio (2005, 2008, 2010) IDE, so that when I hit ';' it will auto-complete all the brackets. I am only interested in brackets, nothing fancier. It doesn't have to be ';' key, it can be another key that auto-completes both brackets and ';'. This is a tiny thing that pops-up time and time again, and I've always wondered if I had to live with it. Thanks.

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  • ValidateCredentials() returns FALSE on First Call but TRUE on Subsequent Calls

    - by Nick Gotch
    I'm using the following code to authenticate users on my web service: using (PrincipalContext context = new PrincipalContext(ContextType.Domain, domain)) { return context.ValidateCredentials(userName, password); } The obstacle I'm running into is that the first call to ValidateCredentials() is returning false but subsequent calls return true. I placed a breakpoint at this line and in the Intermediate window I see the same results: first call returns false, second returns true, even though nothing was changed (by me) between calls. The 'domain' is String.Empty but I've also tried it with the actual domain name and get the same results. I'm not that versed in network administration so any help would be appreciated,

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  • Eclipse plugin: content assist working in Galileo, not Ganymede

    - by erwan
    Hi, I am writing a custom editor in a plugin, and I developed it in Galileo. Now I'm trying to run it in Ganymede, but content assist doesn't work. There is no error, just nothing happens when I type "ctrl+space". The way I'm doing it is by providing a custom Configuration class that extends SourceViewerConfiguration, overriding public IContentAssistant getContentAssistant(ISourceViewer sourceViewer). The method gets called when the editor is created but there is no content assist. Was there any change from Ganymede to Galileo that I should be aware of?

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  • Delphi 2009 RAD Studio - Desktop Selector not Working

    - by Andreas Rejbrand
    In the Delphi 2009 RAD Studio, there is a drop-down combo box where you can select the desktop configuration, i.e. "Default Layout", "Debug Layout, "Classic Undocked", etc. This has stopped working for me, i.e. when I select a desktop, nothing happens. I think I once "customized" the toolbar, by removing the drop-down combo box, and then I added it again, and ever since it has been dead. Is this a known bug? Is there a cure?

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  • mybase.showdialog event fired without apparent reason

    - by António Mendes
    Hi, i'm new to vb .net and oop although i have learned the basics. I'm working in VB and .NET CF 3.5 and i'm trying to pass and received a value with showdialog. The issue here is when i'm done with a procedure in Load, for some reason MyBase.Showdialog (line 3) gives an error of "NullReferenceException was unhandled", but the same procedure doesn't have anything to do with Showdialog. Also, this same error happens with me in other forms when i use AlphaImageButton from AlphaMobileControls. I even created an custom AlphaImageButton with a DialogResult Property and set it to None with no avail. Public Overloads Function ShowDialog(ByRef sArg As String) As String sParam = Split(sArg, vbTab) sArtigo = sParam(0) If MyBase.ShowDialog() = Windows.Forms.DialogResult.OK Then Return lblQuant.Text End If Return Nothing End Function

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  • MouseLeftButtonUpEvent & Bubbling in Canvas

    - by Maxim
    Hi guys, I think I'm going crazy... I have Canvas with event handlers for MouseMove & MouseLeftButtonUp. However MouseLeftButtonUp is not being fired when it happens with cursor over TextBlock that is inside canvas. (it fires just fine when I release mouse button in empty space of the canvas) I tried attaching handler via AddHandler and using regular += syntax, nothing seems to work. I tried using Canvas.CaptureMouse() but it doesnt seem to work either (CaptureMouse returns true btw). MouseLeftButtonUp just doesnt want to propagate to it's parent when it happens over TextBlock (or any other element with IsHitTestVisible = true) inside Canvas. Please help.

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  • Running a SQL query in rails

    - by Bharat
    Hello I have a rails application where I have to subtract 2 time stamps and display the result on the webpage I have used the following sql statement and I am getting the results. select (julianday(resolutions.created_at)-julianday(tickets.created_at))*24 from tickets,resolutions the value of tickets.created_at is 2010-04-05 18:59:02 which is a time stamp and value of resolutions.created_at is 2010-04-08 08:10:33 Now where do I put this sql so that I can be seen in my webpage. I tired it in the views page with the following but nothing showed up: <% @sql = "select (julianday(resolutions.created_at)-julianday(tickets.created_at))*24 from tickets,resolutions" %> <% @t=(ActiveRecord::Base.connection.execute(@sql)) %> So how do I display it on my webpage? when I perform the above I get the output printed on the webpage as 061.1919444389641(julianday(resolutions.created_at)-julianday(tickets.created_at))*2461.1919444389641 only 61.1919444389641 is supposed to be printed but the query statement is also getting printed.

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  • Throwing an exception from a BackgroundWorker which calls an async. method (Webrequest)

    - by mrbamboo
    Hi, My main application creates a new BackgroundWorker X the DoWork event handler of X calls a method Y of my controller. This method creates the WebRequest (async.) instance and the callback using AsyncCallback. When the response arrives the callback method Z gets called and the content will be analyzed. It can happen that the response has an unwanted content. At that moment callback Z will throw an exception. I want to catch this exception in my main application. I tried it in DoWork and RunWorkerCompleted but nothing can be caught from there. Error in RunWorkerCompletedEventArgs is always null.

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  • Can't debug code using VS 2010 beta 2

    - by Nathan W
    This is really strange and I can't seem to figure out why it won't work. I have a C# dll that is a add on for another program, the main program is not mine or a .Net app so I am starting it with Start external program in the debugging tab and and passing my program as a command line and the program starts and loads my add on however my Visual Studio debugger doesn't step into the debugger and won't hit my break points. I checked the module window and it's not even loaded in there, I used process explorer and had a look at main program and my dll was loaded into the main app. The project is set to debug, symbols to full and still nothing. I created the project in VS 2008 and it worked fine and am now trying to get this to work in VS 2010 and no go. Anyone know what could be causing this?

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  • UITextInput setMarkedText:selectedRange not working? (Can't be!)

    - by nacho4d
    I want to set the marked text programmatically and since iOS5 UITextView and UITextField conform to UITextInput this should be possible but for some reason I always get the markedText to be nil. :( What am I missing here? This is what I've tried without success: (While the textview is firstResponder) 1.- When the text view contains no text: text: "", selectedRange : {0,0}, markedText: nil. [_textView setMarkedText:@"?" selectedRange:NSMakeRange(0, 1)]; Result: text : "", selectedRange: {0,0}, markedText: nil. (Nothing changed) 2.- When the text view contains text + some marked text: text : "AAA", selectedRange = {0,3}, marked text at the end : "??" then I do: [_textView setMarkedText:@"?" selectedRangeNSMakeRange(0,3)]; Result : text :"AAA", selectedRange: {0,3}, markedText: nil; (the marked text became nil) In both cases is like setMarkedText:selectedRange: would be setting the current marked text (if some) to nil. Any help would be highly appreciated :)

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  • Prevent Windows Explorer from interfering with Directory operations.

    - by Bruno Martinez
    Sometimes, no "foo" directory is left after running this code: string folder = Path.Combine(Path.GetTempPath(), "foo"); if (!Directory.Exists(folder)) Directory.CreateDirectory(folder); Process.Start(@"c:\windows\explorer.exe", folder); Thread.Sleep(TimeSpan.FromSeconds(5)); Directory.Delete(folder, false); Directory.CreateDirectory(folder); It seems Windows Explorer keeps a reference to the folder, so the last CreateDirectory has nothing to do, but then the original folder is deleted. How can I fix the code?

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  • Boost::Asio : io_service.run() vs poll() or how do I integrate boost::asio in mainloop

    - by user300713
    Hi, I am currently trying to use boost::asio for some simple tcp networking for the first time, and I allready came across something I am not really sure how to deal with. As far as I understand io_service.run() method is basically a loop which runs until there is nothing more left to do, which means it will run until I release my little server object. Since I allready got some sort of mainloop set up, I would rather like tp update the networking loop manually from there just for the sake of simplicity, and I think io_service.poll() would do what I want, sort of like this: void myApplication::update() { myIoService.poll(); //do other stuff } This seems to work, but I am still wondering if there is a drawback from this method since that does not seem to be the common way to deal with boost::asios io services. Is this a valid approach or should I rather use io_service.run() in a non blocking extra thread?

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  • Flex: vertical gap between list items not working

    - by pfunc
    I have a list item with buttons in it like so: <mx:List contentBackgroundAlpha="0" baseColor="0x333333" leading="10" id="weekButtonList" width="260" borderVisible="false" dataProvider="{_data.mappoints.week.@number}" itemClick="onWeekClick(event);" > <mx:itemRenderer > <mx:Component> <mx:Button buttonMode="true" width="260" height="50" label="Week {data}" /> </mx:Component> </mx:itemRenderer> </mx:List> No matter what I do, these buttons have a vertical gap inbetween them. I have tried everything from setting the "vertical-gap" property to negative and positive numbers as well as changing the padding-bottom and padding-top on them. I want the buttons to be right up against eachother vertically. I have also tried "button-height" and padding on the List component...still nothing. How do I control this?

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  • Can't get websrvmng to run in Plesk SSH terminal.

    - by JohnB
    I am following this MediaTemple KB article and stuck at the last step. When I try to run the websrvmng (using the ssh terminal in Plesk) using the code the KB references: /usr/local/psa/admin/sbin/websrvmng -v -a I receive a 'File or Directory not found' error. I am a n00b when it comes to this stuff and would really appreciate any advice/suggestions for how to get websrvmng to run. I have searched through tons of articles on it but found nothing more illuminating than the above code. I am sure I'm overlooking something simple (login as root to run? something I need to replace in the code like usr?). It is a MediaTemple DV server running CentOS 5 and as I said using Plesk. I desperately need to get this to work and I am pulling my hair out, so as I said any help would be greatly appreciated.

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  • Visual C# 2008 Express deployment

    - by Carlo
    Hello, is there any way I can add some files in the deployment process so they get copied in the installation? I need an xml file that has some data that the application needs, I tried every option in the build action for the file but nothing works, the application always crashes after the installation. Also, I'd like the program to be installed under the Program Files directory. The folder where VS Express installs it it's weird some C:\Users\Carlo\Temp\Applications\weirdnumbers9231FFC231\ directory, and I don't want that either. Thanks in advance!

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  • Freezing a dual-mode (GUI and console) application using cx_Freeze

    - by Mridang Agarwalla
    Hi, I've developed a Python application that runs both in the GUI mode and the console mode. If any arguments are specified, it runs in a console mode else it runs in the GUI mode. I've managed to freeze this using cx_Freeze. I had some problems hiding the black console window that would pop up with wxPython and so I modified my setup.py script like this: import sys from cx_Freeze import setup, Executable base = None if sys.platform == "win32": base = "Win32GUI" setup( name = "simple_PyQt4", version = "0.1", description = "Sample cx_Freeze PyQt4 script", executables = [Executable("PyQt4app.py", base = base)]) This works fine but now when I try to open up my console and run the executable from there, it doesn't output anything. I don't get any errors or messages so it seems that cx_Feeze is redirecting the stdout somewhere else. Is is possible to get it to work with both mode? Nothing similar to this seems to be documented anywhere. :( Thanks in advance. Mridang

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  • Spring security access with multiple roles

    - by Evgeny Makarov
    I want to define access for some pages for user who has one of following roles (ROLE1 or ROLE2) I'm trying to configure this in my spring security xml file as following: <security:http entry-point-ref="restAuthenticationEntryPoint" access-decision-manager-ref="accessDecisionManager" xmlns="http://www.springframework.org/schema/security" use-expressions="true"> <!-- skipped configuration --> <security:intercept-url pattern="/rest/api/myUrl*" access="hasRole('ROLE1') or hasRole('ROLE2')" /> <!-- skipped configuration --> </security:http> I've tried various ways like: access="hasRole('ROLE1, ROLE2')" access="hasRole('ROLE1', 'ROLE2')" access="hasAnyRole('[ROLE1', 'ROLE2]')" etc but nothing seems to be working. I'm keep getting exception java.lang.IllegalArgumentException: Unsupported configuration attributes: or java.lang.IllegalArgumentException: Failed to parse expression 'hasAnyRole(['ROLE1', 'ROLE2'])' how should it be configured? Thanks

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  • WWSAPI and setting "soapenv:Header" values

    - by Ben Burnett
    I'm trying to connect to a web service from a C++ app using WWS. I got the base connection working just fine. My XML message has two parts though, a header (soapenv:Header) and a body (soapenv:Body). the generated functions only fill in the body. How do I set the Header information? I assumed it has something to do with WsSetHeader() or WsAddCustomHeader() but can't seam to find the right values to use in the parameters. Can someone point me in the right direction here? I've been googling and trying to research this now for several days and am finding many sources for basic help with WWSAPI, but nothing seams to go deeper into how to use it for more advanced applications. any good links or resources to find more advanced help on WWSAPI? Thanks, --Ben Burnett www.burnett.ws

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  • Convert/Cast base type to Derived type

    - by user102533
    I am extending the existing .NET framework class by deriving it. How do I convert an object of base type to derived type? public class Results { //Framework methods } public class MyResults : Results { //Nothing here } //I call the framework method public static MyResults GetResults() { Results results = new Results(); //Results results = new MyResults(); //tried this as well. results = CallFrameworkMethod(); return (MyResults)results; //Throws runtime exception } I understand that this happens as I am trying to cast a base type to a derived type and if derived type has additional properties, then the memory is not allocated. When I do add the additional properties, I don't care if they are initialized to null. How do I do this without doing a manual copy?

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