Hi,

I'm playingwith Blend 3 and created a simple datagrid and checked that it displayed data OK. I then made it into a user control and placed it on the stackpanelbut it failed to show the data. Maybe what I'm trying is not possible?

XAML is as below and any clues would be appreciated.

<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit" xmlns:local="clr-namespace:TestStuff01" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" x:Class="Window1"
Title="Window1" Height="449" Width="812" x:Name="Window1" mc:Ignorable="d">
<Window.Resources>
<CollectionViewSource x:Key="LocationsViewSource__BookingsEntities" />
</Window.Resources>
<StackPanel Orientation="Horizontal" >
<my:DataGrid Width="200"
ItemsSource="{Binding Source={StaticResource LocationsViewSource__BookingsEntities}}" />
<local:UserControl1 Width="200"/>
</StackPanel>
</Window>

<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
xmlns:Custom="http://schemas.microsoft.com/wpf/2008/toolkit"
x:Class="UserControl1"
x:Name="UserControl"
d:DesignWidth="200" d:DesignHeight="415">

<UserControl.Resources>
<CollectionViewSource x:Key="LocationsViewSource__BookingsEntities" />
</UserControl.Resources>

<Grid x:Name="LayoutRoot">
<StackPanel/>
<Custom:DataGrid
ItemsSource="{Binding Source={StaticResource LocationsViewSource__BookingsEntities}}" Width="200" HorizontalAlignment="Right" Margin="0,0,-400,0" />
</Grid>
</UserControl>

Thanks in advance

Hi

Since your question seems to relate to performing this task in Expression Blend, you should ask it over at the Expression Blend Forum http://social.expression.microsoft.com/Forums/en-US/blend/threadswhere it will recieve better attention.

There is nothing technically impossible in what you are attempting to do - it's possible that when you made the UserControl, the code that populates the underlying LocationsViewSource__BookingsEntities source didn't get moved into the UserControl's code, so as it stands the UC never has any data to show (since it will be looking in its own local copy of that StaticResource). Check the codebehind of your Window and compare it to the UserControl - if the load code for the CollectionViewSource is there in one but not the other, you have your answer.

If your goal is to have the UserControl pick up the ambient Data Source of your Window (for instance because you are planning to use the same data source for other things on that page), you'll need to modify your control to ItemsSource={Binding} (rather than specifying the source), and then set the DataSource on the UserControl (or a higher container) when you instantiate the UC in the Window.

Mark

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Mark Wilson-Thomas - Program Team - WPF & SL Designer for Visual Studio - posts are provided 'as-is'

Hi

Since your question seems to relate to performing this task in Expression Blend, you should ask it over at the Expression Blend Forum http://social.expression.microsoft.com/Forums/en-US/blend/threadswhere it will recieve better attention.

There is nothing technically impossible in what you are attempting to do - it's possible that when you made the UserControl, the code that populates the underlying LocationsViewSource__BookingsEntities source didn't get moved into the UserControl's code, so as it stands the UC never has any data to show (since it will be looking in its own local copy of that StaticResource). Check the codebehind of your Window and compare it to the UserControl - if the load code for the CollectionViewSource is there in one but not the other, you have your answer.

If your goal is to have the UserControl pick up the ambient Data Source of your Window (for instance because you are planning to use the same data source for other things on that page), you'll need to modify your control to ItemsSource={Binding} (rather than specifying the source), and then set the DataSource on the UserControl (or a higher container) when you instantiate the UC in the Window.

Mark

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Mark Wilson-Thomas - Program Team - WPF & SL Designer for Visual Studio - posts are provided 'as-is'

Hi Mark,

Thanks Jim!

Have you had a chance to try the Visual Studio 2010 Beta releases yet? What do you make of the new features? What kind of software are you building - do you think the new features will be helpful to you?

Cheers
Mark

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Mark Wilson-Thomas - Program Team - WPF & SL Designer for Visual Studio - posts are provided 'as-is'

Hi Mark,

Thanks for the feedback Jim! Glad to hear you are finding the new features work for you - keep us posted if you have time for further explorations!

Mark

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Mark Wilson-Thomas - Program Team - WPF & SL Designer for Visual Studio - posts are provided 'as-is'