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WPF Designer not working with Blend 3 Behaviours

When I have made use of a Blend 3 Behaviour, the WPF Design reports and error saying that the attached property 'Bahaviors' was not found on type 'Interaction'.

John McCauley

John McCauley Wednesday, August 19, 2009 3:55 PM

John,

Can you post a link to your application or post the XAML that will not load?

What version of Visual Studio are you using?

What any service packs installed?

What version of Blend are you using?

Cheers, Karl - Microsoft Product Team, Code Project MVP - http://karlshifflett.wordpress.com/

karl140.6 Wednesday, August 26, 2009 4:23 PM

I have the same problem on visual studio 2008 sp1 with blend 3.

when you use System.Windows.Interactivity in order to apply interaction behaviors or triggers

You 've got this error on the wpf designers : 'Behaviors' was not found on type 'Interaction'
However the project compiles and runs but you have no designer

<Window
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    
	xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" xmlns:il="clr-namespace:Microsoft.Expression.Interactivity.Layout;assembly=Microsoft.Expression.Interactions"
	x:Class="WpfApplication1.MainWindow"
	x:Name="Window"
	Title="MainWindow"
	Width="640" Height="480">

	<Grid x:Name="LayoutRoot">
		<Button Margin="188,161,202,0" VerticalAlignment="Top" Height="44" Content="Button">
			<i:Interaction.Behaviors>
				<il:MouseDragElementBehavior/>
			</i:Interaction.Behaviors>
			<i:Interaction.Triggers>
			</i:Interaction.Triggers>
		</Button>
	</Grid>
</Window>

Edited byCorneflex Thursday, August 27, 2009 7:51 AM

Corneflex Thursday, August 27, 2009 7:47 AM

I found an hot fix for visual that resolve my problem
http://code.msdn.microsoft.com/KB958017/Release/ProjectReleases.aspx?ReleaseId=1719

Corneflex Friday, August 28, 2009 7:09 AM

You can use google to search for other answers

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