silverlight-4.0

When I use ContextMenu from Silverlight 4 Toolkit I want to get ContextMenu instance's Owner, but it's not available since in ContextMenu class Owner is an internal property. For example, I have a Rectangle put inside a Border. When I right-click a Rectangle (and a context menu appears) I need to change the Rectangle Border's thickness to indicate that the Rectangle is the current element of the parent Grid, for example. So I try to use ContextMenu.Loaded event where I get the ContextMenu (through the sender parameter), but I can't get the Owner of that ContextMenu (i.e. the Rectangle with its

I'm developing a Silverlight application and I'm trying to stick to the MVVM principals, but I'm running into some problems changing the source of an image based on the state of a property in the ViewModel. For all intents and purposes, you can think of the functionality I'm implementing as a play/pause button for an audio app. When in the "Play" mode, IsActive is true in the ViewModel and the "Pause.png" image on the button should be displayed. When paused, IsActive is false in the ViewModel and "Play.png" is displayed on the button. Naturally, there are two additional images to handle when

I have a memorystream in a silverlight app. I have to copy this memorystream to a filestream object. If I call: memoryStream.Position = 0; memoryStream.Seek(0,SeekOrigin.Begin); It does not work, I debug the application, check the properties of the memorystream, and the position still points to the end of the file. Any clues? Is it possible that another of your properties is being triggered in the debugger, and reading through the stream? Rather than using the debugger, what happens if you log (or show on a message box): Log("Position = " + stream.Position); stream.Position = 0; Log("Position

I have a combobox defined as follows: <ComboBox x:Name="cboDept" Grid.Row="0" Margin="8,8,8,8" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" ItemsSource="{Binding Source={StaticResource cvsCategories}}"> <ComboBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Vertical" Width="Auto" Height="Auto"> <sdk:Label Content="{Binding CategoryID}" Height="20" /> <sdk:Label Content="{Binding CategoryName}" Height="20" /> </StackPanel> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> It works fine. However, once I select an item in the list, I want a different template to be

We use NugetPowerTools PackageRestore to avoid putting our packages folder in svn. This works building .NET projects with Visual Studio and MSBuild. It also works building Silverlight projects with Visual Studio. However, when we use MSBuild to build Silverlight projects, the build fails. This appears to have to do with the tasks in Microsoft.Silverlight.Common.targets . Looking at the MSBuild output, it appears to get to the step GetXapOutputFile before it errors. Something either in that step, or after that step, is looking for the packages, but the package restore does not run until after

I am trying to make a datagrid with a custom header that has a textblock and a button. The textblock and button is represented by this UserControl I created: <UserControl x:Class="SilverlightWorkshop.Controls.CollapsibleDataGridHeader" ... /> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding HeaderText, Mode=TwoWay}" /> <Button Content="←" Click="ArrowButtonClick"/> </StackPanel> </UserControl> The idea is, when the user clicks the button, the column width will collapse to a small size. However, I am having trouble finding an elegant solution for using this control as a template