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  • Silverlight: Problem using CellEditingTemplate

    - by Charles
    Hello Silverlight gurus, I am experiencing a problem with the DataGrid where my data-bound object's properties are not being updated when using the CellTemplate/CellEditingTemplate: <data:DataGridTemplateColumn Header="Text"> <data:DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Text}" ></TextBlock> </DataTemplate> </data:DataGridTemplateColumn.CellTemplate> <data:DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <TextBox Text="{Binding Text, Mode=TwoWay}" /> </DataTemplate> </data:DataGridTemplateColumn.CellEditingTemplate> </data:DataGridTemplateColumn> I am binding to a code-gen'd entity via the RIA Services. I've added an event handler to the PropertyChanged event, and it is never fired. However, if I do not use a template and instead use a DataGridTextColumn, everything works fine. I'm sure this sounds like an easy fix - I'm only using a TextBox in my editing template, so why not us a DataGridTextColumn? The problem is that I want to have a multi-line textbox, so using the DataGridTextColumn is not an option. Any suggestions? Do you know of any differences between using a CellEditingTemplate containing a single TextBox and using a DataGridTextColumn? Thanks, -Charles [UPDATE] I posted a bug report here: http://silverlight.net/forums/p/118729/267521.aspx I can't imagine that this is "as-designed"... If someone else has known about this and I'm just being dumb, I'd appreciate an explanation - I'd prefer embarrassment over ignorance :).

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  • Issue intercepting property in Silverlight application

    - by joblot
    I am using Ninject as DI container in a Silverlight application. Now I am extending the application to support interception and started integrating DynamicProxy2 extension for Ninject. I am trying to intercept call to properties on a ViewModel and ending up getting following exception: “Attempt to access the method failed: System.Reflection.Emit.DynamicMethod..ctor(System.String, System.Type, System.Type[], System.Reflection.Module, Boolean)” This exception is thrown when invocation.Proceed() method is called. I tried two implementations of the interceptor and they both fail public class NotifyPropertyChangedInterceptor: SimpleInterceptor { protected override void AfterInvoke(IInvocation invocation) { var model = (IAutoNotifyPropertyChanged)invocation.Request.Proxy; model.OnPropertyChanged(invocation.Request.Method.Name.Substring("set_".Length)); } } public class NotifyPropertyChangedInterceptor: IInterceptor { public void Intercept(IInvocation invocation) { invocation.Proceed(); var model = (IAutoNotifyPropertyChanged)invocation.Request.Proxy; model.OnPropertyChanged(invocation.Request.Method.Name.Substring("set_".Length)); } } I want to call OnPropertyChanged method on the ViewModel when property value is set. I am using Attribute based interception. [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)] public class NotifyPropertyChangedAttribute : InterceptAttribute { public override IInterceptor CreateInterceptor(IProxyRequest request) { if(request.Method.Name.StartsWith("set_")) return request.Context.Kernel.Get<NotifyPropertyChangedInterceptor>(); return null; } } I tested the implementation with a Console Application and it works alright. I also noted in Console Application as long as I had Ninject.Extensions.Interception.DynamicProxy2.dll in same folder as Ninject.dll I did not have to explicitly load DynamicProxy2Module into the Kernel, where as I had to explicitly load it for Silverlight application as follows: IKernel kernel = new StandardKernel(new DIModules(), new DynamicProxy2Module()); Could someone please help? Thanks

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  • PRISM - Creating mouseoverbehavior causes a Silverlight library to not be visible in main Silverligh

    - by RHLopez
    Created a simple Silverlight 4 application (SimpleApp) then added a Silverlight 4 library (LibraryA). Added code to the library (LibraryA) to implement MouseOverBehavior by inheriting from CommandBaseBehavior along with the appropriate attached property class/methods. Added reference in SimpleApp to LibraryA and went to MainPage.xaml to add namespace reference but it does not show up with Intellisense. Typing the namespace manually and then adding the attached MouseOver command works as it should as far as intellisense showing my attached property name, i.e. ... commands:MouseOver.Command="{Binding MousedOver}". However when I try to run it I get a XAML parser error saying that the "Command" attached property does not exist in MouseOver. If I move my class definitions from LibraryA to SimpleApp then everything works. I removed everything from LibraryA and just put one class with this in it: public class MouseOverBehavior : CommandBehaviorBase<Control> { public MouseOverBehavior(Control element) : base(element) {} } With this simple class in LibraryA it will not show up in XAML intellisense in SimpleApp. XAML intellisense works with other libraries that I have written that don't use PRISM. Don't know what I am missing hopefully it's something simple. I am using the latest SL4 build for PRISM change set 42969. Visual Studio 2010 RTM Professional in Windows 7 Ultimate 64-bit.

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  • Dynamically add User Controls to a Silverlight 4 page

    - by PilotBob
    I am building an iGoogle like "dashboard" for our application with silverlight 4. Each users dashboard (which snapins and their positions) will be stored in the database. Each snap in is a user control, for example... AwesomeSnapin.xaml. On the dashboard page in silverlight I am retrieving the users dashboard which is a collection of snapin objects which include the information on the snapin. I can store the name of the page or the class or whatever is needed. I have the following code which loops through the collection of snapins to add them to the dashboard page. In testing I have just hard coded a single snapin item. Here is the prototype code: foreach (var UserSnapin in op.Entities) { UserControl uc = new AmsiSL.eFinancials.BudgetCheck(); Canvas.SetLeft(uc, UserSnapin.PositionLeft); Canvas.SetTop(uc, UserSnapin.PositionTop); Layout.Children.Add(uc); MessageBox.Show(String.Format("Added {0}",UserSnapin.Snapin.Name)); } The above works fine... but of course adds the BudgetCheck snapin for every item that is defined for the users dashboard. Of course the messagebox is for debugging purposes only. How would I change line 3 of that to load the user control class (using classname or xaml path whichever is better) based on the data in the collection.

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  • One-sided rounded buttons in Silverlight

    - by xarzu
    I want to make a collection of buttons in silverlight. They are in a collection that goes from left to right and the buttons are lined up so that they are touching on the left and right sides. Here is the rub: The collection has rounded corners but the buttons in between the end buttons in the collection do not have rounded ends. So basically, for the buttons on the far left and right side of the collection, they have to be somewhat special because they have to have one flat vertical side and one rounded side. Is this possible to do in silverlight without resorting to making a special bitmap for the end buttons? One idea I have is somehow declare a canvas with a bitmap background and then have overlapping ellipse and rectangle <Canvas Height="100" HorizontalAlignment="Left" Margin="189,381,0,0" VerticalAlignment="Top" Width="200" Background="Black"> <Rectangle Fill="#FFF4F4F5" HorizontalAlignment="Left" Stroke="Black" Width="58" Height="61" Canvas.Left="7" Canvas.Top="16" /> <Ellipse Fill="#FFF4F4F5" HorizontalAlignment="Left" Stroke="White" Width="65" StrokeThickness="0" Height="59" Canvas.Left="31" Canvas.Top="17" /> </Canvas>

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  • Silverlight Cream for December 05, 2010 -- #1003

    - by Dave Campbell
    In this (Almost) All-Submittal Issue: John Papa(-2-), Jesse Liberty, Tim Heuer, Dan Wahlin, Markus Egger, Phil Middlemiss, Coding4Fun, Michael Washington, Gill Cleeren, MichaelD!, Colin Eberhardt, Kunal Chowdhury, and Rabeeh Abla. Above the Fold: Silverlight: "Two-Way Binding on TreeView.SelectedItem" Phil Middlemiss WP7: "Taking Screen Shots of Windows Phone 7 Panorama Apps" Markus Egger Training: "Beginners Guide to Visual Studio LightSwitch (Part - 4)" Kunal Chowdhury Shoutouts: Don't let the fire go out... check out the Firestarter Labs Bart Czernicki discusses the need for 64-bit Silverlight: Why a 64-bit runtime for Silverlight 5 Matters Laurent Duveau is interviewed by the SilverlightShow folks to discuss his WP7 app: Laurent Duveau on Morse Code Flash Light WP7 Application From SilverlightCream.com: John Papa: Silverlight 5 Features John Papa has a post up highlighting his take on what's cool in the new featureset for Silverlight 5... including an external link to the keynote. Silverlight Firestarter Keynote and Sessions John Papa also has posted links to all the individual session videos... what a great resource! Yet Another Podcast #17 – Scott Guthrie Jesse Liberty went big with his latest Yet Another Podcast ... he is interviewing Scott Guthrie about the Firestarter, Silverlight, WP7. and more. Silverlight 5 Plans Revealed With this post from Tim Heuer, I find myself adding a Silverlight 5 tag... so bring on the fun! ... unless you've been overloaded like I have since last Thursday, you've probably seen this, but what the heck... Silverlight Firestarter Wrap Up and WCF RIA Services Talk Sample Code Phoenix's own Dan Wahlin had a great WCF RIA Services presentation at the Firestarter last week, and his material and lots of other good links are up on his blog, and I'd say that even if he didn't have a couple shoutouts to me in it :) Thanks Dan!! Taking Screen Shots of Windows Phone 7 Panorama Apps Markus Egger helps us all out with a post on how to get screenshots of your WP7 Panorama app... in case you haven't tried it ... it's not as easy as it sounds! Two-Way Binding on TreeView.SelectedItem Phil Middlemiss is back with a post taking some of the mystery out of the TreeView control bound to a data context and dealing with the SelectedItem property... oh yeah, and throw all that into MVVM! Great tutorial as usual, a cool behavior, and all the source. Native Extensions for Microsoft Silverlight Alan Cobb pointed me to a quick post up on the Coding4Fun site about the NESL (Native Extensions for SilverLight) from Microsoft that give access to some cool features of Windows 7 from Silverlight... I added an NESL tag in case other posts appear on this subject. Silverlight Simple Drag And Drop / Or Browse View Model / MVVM File Upload Control Michael Washington has another great tutorial up at CodeProject that expands on prior work he'd done with drag/drop file upload with this post on integrating an updated browse/upload into ViewModel/MVVM projects, all of which is Blendable. The validation story in Silverlight (Part 1) In good news for all of us, Gill Cleeren has started a tutorial series at SilverlightShow on Silverlight Validation. The first one is up discussing the basics... The Common Framework MichaelD! has a WPF/Silverlight framework up with Facebook Authentication, Xaml-driven IOC, T4 synchronous WCF proxies, and WP7 on the roadmap... source on CodePlex, check it out and give him some feedback. Exploring Reactive Extensions (Rx) through Twitter and Bing Maps Mashups If you've been waiting around to learn Rx, Colin Eberhardt has the post up for you (and me)... great tutorial up on Twitter and Bing Maps Mashups ... and all the code... for the twitter immediate app, and also the UKSnow one we showed last week... check out the demo page, and grab the source! Beginners Guide to Visual Studio LightSwitch (Part - 4) Kunal Chowdhury has the 4th part of his Lightswitch tutorial series up at SilverlightShow. In this one, he shows how to integrate multiple tables into a screen. It is here Take Your Silverlight Application Full Screen & intercept all windows keys !! Rabeeh Abla sent me this link to the blog describing a COM exposed library that intercepts all keys when Silverlight is full-screen. There are a few I hit when I'm going through blogs that Ctrl-W (FF) just won't take down and that annoys me... so this might be a solution if you have that problem... worth a look anyway! Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Grid Layout is pain

    - by brainbox
     I think one of the biggest mistake of Silverlight and WPF is its Grid layout.Imagine you have a data form with 2 columns and 5 rows. You need to place new row after the first one. As a result you need to rewrite Grid.Rows and Grid.Columns in all rows belows. But the worst thing of such approach is that it is static. So you need predefine all your rows and columns. As a result creating of simple dynamic datagrid or dataform become impossible... So the question if why best practices of HTML and Adobe Flex were dropped????If anybody have tried to port Flex Grid layout to silverlight please mail me or drop a comment.

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  • Right tool for the job(html5 vs silverlight)

    - by Jargo
    I have been tasked to develop a web based offer request application for bathrooms and I am asking opinions on which tool should I choose. I have narrowed options down to two (html5 and silverlight). Most of the application consists of basic UI elements that could be achieved with html4. However most challenging part is the design view for the bathroom. User first defines size of the bathroom by giving dimensions. When the dimensions are defined the application renders an empty bathroom floorplan and user can start dragging&dropping furniture on to it. Some furniture have rules where they can be dragged. For example sinks can only be dragged next to a wall. I know that this functionality can be achieved with silverlight but what about html5 ? I know that Canvas element can be used to draw graphics, but can it render the bathroom smoothly as user drags a piece furniture on it?

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  • Handle Silverlight 4 RichTextBox Paste event

    - by iulianchira
    How can I handle the Paste event for a RichTextBox control in Silverlight 4? (I want to be able to copy-paste images - the Clipboard in SL4 supports only text, so I'm sending the ImageSource Uri, and on the Paste event I want to load the image in the RichTextBox instead of the Uri string).

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  • Problem Saving Silverlight 4 Business Application

    - by rip
    I’m trying to create a new project using the Silverlight 4 business application template in Visual Studio 2010 beta 2. When I click “Save All” after the project is created I get build errors such as: The project file "..\BusinessApplication1.Web\BusinessApplication1.Web.vbproj" was not found. BusinessApplication1 Unable to open module file 'C:\Users\XX\AppData\Local\Temporary Projects\BusinessApplication1\Assets\Resources\ApplicationStrings.Designer.vb': System Error &H80070003& C:\Users\XX\AppData\Local\Temporary Projects\BusinessApplication1\Assets\Resources\ApplicationStrings.Designer.vb 1 1 BusinessApplication1 Any idea what I am doing wrong?

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  • Silverlight 2.0 - Can't get the text wrapping behaviour that I want

    - by Anthony
    I am having trouble getting Silverlight 2.0 to lay out text exactly how I want. I want text with line breaks and embedded links, with wrapping, like HTML text in a web page. Here's the closest that I have come: <UserControl x:Class="FlowPanelTest.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:Controls="clr-namespace:Microsoft.Windows.Controls;assembly=Microsoft.Windows.Controls" Width="250" Height="300"> <Border BorderBrush="Black" BorderThickness="2" > <Controls:WrapPanel> <TextBlock x:Name="tb1" TextWrapping="Wrap">Short text. </TextBlock> <TextBlock x:Name="tb2" TextWrapping="Wrap">A bit of text. </TextBlock> <TextBlock x:Name="tb3" TextWrapping="Wrap">About half of a line of text.</TextBlock> <TextBlock x:Name="tb4" TextWrapping="Wrap">More than half a line of longer text.</TextBlock> <TextBlock x:Name="tb5" TextWrapping="Wrap">More than one line of text, so it will wrap onto the following line.</TextBlock> </Controls:WrapPanel> </Border> </UserControl> But the issue is that although the text blocks tb1 and tb2 will go onto the same line because there is room enough for them completely, tb3 onwards will not start on the same line as the previous block, even though it will wrap onto following lines. I want each text block to start where the previous one ends, on the same line. I want to put click event handlers on some of the text. I also want paragraph breaks. Essentially I'm trying to work around the lack of FlowDocument and Hyperlink controls in Silverlight 2.0's subset of XAML. To answer the questions posed in the answers: Why not use runs for the non-clickable text? If I just use individual TextBlocks only on the clickable text, then those bits of text will still suffer from the wrapping problem illustrated above. And the TextBlock just before the link, and the TextBlock just after. Essentially all of it. It doesn't look like I have many opportunities for putting multiple runs in the same TextBlock. Dividing the links from the other text with RegExs and loops is not the issue at all, the issue is display layout. Why not put each word in an individual TextBlock in a WrapPanel Aside from being an ugly hack, this does not play at all well with linebreaks - the layout is incorrect. It would also make the underline style of linked text into a broken line. Here's an example with each word in its own TextBlock. Try running it, note that the linebreak isn't shown in the right place at all. <UserControl x:Class="SilverlightApplication2.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:Controls="clr-namespace:Microsoft.Windows.Controls;assembly=Microsoft.Windows.Controls" Width="300" Height="300"> <Controls:WrapPanel> <TextBlock TextWrapping="Wrap">Short1 </TextBlock> <TextBlock TextWrapping="Wrap">Longer1 </TextBlock> <TextBlock TextWrapping="Wrap">Longerest1 </TextBlock> <TextBlock TextWrapping="Wrap"> <Run>Break</Run> <LineBreak></LineBreak> </TextBlock> <TextBlock TextWrapping="Wrap">Short2</TextBlock> <TextBlock TextWrapping="Wrap">Longer2</TextBlock> <TextBlock TextWrapping="Wrap">Longerest2</TextBlock> <TextBlock TextWrapping="Wrap">Short3</TextBlock> <TextBlock TextWrapping="Wrap">Longer3</TextBlock> <TextBlock TextWrapping="Wrap">Longerest3</TextBlock> </Controls:WrapPanel> </UserControl> What about The LinkLabelControl as here and here. It has the same problems as the approach above, since it's much the same. Try running the sample, and make the link text longer and longer until it wraps. Note that the link starts on a new line, which it shouldn't. Make the link text even longer, so that the link text is longer than a line. Note that it doesn't wrap at all, it cuts off. This control doesn't handle line breaks and paragraph breaks either. Why not put the text all in runs, detect clicks on the containing TextBlock and work out which run was clicked Runs do not have mouse events, but the containing TextBlock does. I can't find a way to check if the run is under the mouse (IsMouseOver is not present in SilverLight) or to find the bounding geometry of the run (no clip property). There is VisualTreeHelper.FindElementsInHostCoordinates() The code below uses VisualTreeHelper.FindElementsInHostCoordinates to get the controls under the click. The output lists the TextBlock but not the Run, since a Run is not a UiElement. private void theText_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e) { // get the elements under the click UIElement uiElementSender = sender as UIElement; Point clickPos = e.GetPosition(uiElementSender); var UiElementsUnderClick = VisualTreeHelper.FindElementsInHostCoordinates(clickPos, uiElementSender); // show the controls string outputText = ""; foreach (var uiElement in UiElementsUnderClick) { outputText += uiElement.GetType().ToString() + "\n"; } this.outText.Text = outputText; } Use an empty text block with a margin to space following content onto a following line I'm still thinking about this one. How do you calculate the right width for a line-breaking block to force following content onto the following line? Too short and the following content will still be on the same line, at the right. Too long and the "linebreak" will be on the following line, with content after it. You would have to resize the breaks when the control is resized. Some of the code for this is: TextBlock lineBreak = new TextBlock(); lineBreak.TextWrapping = TextWrapping.Wrap; lineBreak.Text = " "; // need adaptive width lineBreak.Margin = new Thickness(0, 0, 200, 0);

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  • [Silverlight] DataGrid

    - by nCdy
    I'm making tutorials. Silverlight + MSSQL And I'm on the last step when it says "Copy-paste my code and tada it will works"... :-/ But after I added System.Windows.Controls.Data reference it still can't find Error 3 The type or namespace name 'Data' does not exist in the namespace 'System.Windows.Controls' (are you missing an assembly reference?) I really don't miss the reference ... Maybe I need to add it somehow else or ... I really have no idea. (VSWDEE2010)

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  • How to create a certificate for signing a Silverlight xap

    - by jstawski
    Hello everyone, I have a silverlight app that will be installed OOB with full trust and hence i want to create a certificate to sign the app. Since I'm going to have full control of the clients where the app will be installed I don't need to buy a certificate, because I know that I can create one and install it in the Trusted Root Certification Authority. Can someone please post a step by step on how to create the certificate so it can be used to sign the XAP. Thanks...

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  • Using embedded resources in Silverlight (4) - other cultures not being compiled

    - by Andrei Rinea
    I am having a bit of a hard time providing localized strings for the UI in a small Silverlight 4 application. Basically I've put a folder "Resources" and placed two resource files in it : Statuses.resx Statuses.ro.resx I do have an enum Statuses : public enum Statuses { None, Working } and a convertor : public class StatusToMessage : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (!Enum.IsDefined(typeof(Status), value)) { throw new ArgumentOutOfRangeException("value"); } var x = Statuses.None; return Statuses.ResourceManager.GetString(((Status)value).ToString(), Thread.CurrentThread.CurrentUICulture); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } in the view I have a textblock : <TextBlock Grid.Column="3" Text="{Binding Status, Converter={StaticResource StatusToMessage}}" /> Upon view rendering the converter is called but no matter what the Thread.CurrentThread.CurrentUICulture is set it always returns the default culture value. Upon further inspection I took apart the XAP resulted file, taken the resulted DLL file to Reflector and inspected the embedded resources. It only contains the default resource!! Going back to the two resource files I am now inspecting their properties : Build action : Embedded Resource Copy to output directory : Do not copy Custom tool : ResXFileCodeGenerator Custom tool namespace : [empty] Both resource (.resx) files have these settings. The .Designer.cs resulted files are as follows : Statuses.Designer.cs : //------------------------------------------------------------------------------ // <auto-generated> // This code was generated by a tool. // Runtime Version:4.0.30319.1 // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // </auto-generated> //------------------------------------------------------------------------------ namespace SilverlightApplication5.Resources { using System; /// <summary> /// A strongly-typed resource class, for looking up localized strings, etc. /// </summary> // This class was auto-generated by the StronglyTypedResourceBuilder // class via a tool like ResGen or Visual Studio. // To add or remove a member, edit your .ResX file then rerun ResGen // with the /str option, or rebuild your VS project. [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")] [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()] internal class Statuses { // ... yadda-yadda Statuses.ro.Designer.cs [empty] I've taken both files and put them in a console application and they behave as expected in it, not like in this silverlight application. What is wrong?

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  • Morphing from an image to a shape in Silverlight 3

    - by Moo
    Hi, I have a requirement to morph from an image (png) to a shape (polygon) in Silverlight 3 as an effect, but of course there is no built in transition or method to do this. At the moment the best I have is fade one out and the other in, but can anyone suggest a decent alternative that may work or look better? Regards Moo

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  • Silverlight - Image Not Loading from URI at Runtime!?

    - by Sootah
    I've added an image element to my Silverlight app, and while the image pulls right up when in design mode, it doesn't load at all when running the app. Code is: <Image Height="95" HorizontalAlignment="Left" Margin="12,541,0,0" Name="imgBannerAd" Stretch="Fill" VerticalAlignment="Top" Width="828" Source="http://myurl.com/images/theimage.png" /> What's the deal? I'd tried running the file via the local hard drive and localhost, neither has any effect.

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  • Debugging a performance issue on ListBoxDragDropTarget (Silverlight Toolkit)?

    - by carlmon
    I have a complex project using SilverLight Toolkit's ListBoxDragDropTarget for drag-drop operations and it is maxing CPU. I tried to reproduce the issue in a small sample project, but then it works fine. The problem persists when I remove our custom styles and all other controls from the page, but the page is hosted in another page's ScrollView. "EnableRedrawRegions" shows that the screen gets redrawn on every frame. My question is this: How can I track down the cause of this constant redrawing?

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