Home / Community & Support / Developer Productivity Tools Forums / Silverlight > Window > RadWindow as a UserControl HRESULT E_FAIL in Blend 4

• dwhite

  Posted on Sep 16, 2010 (permalink)

  I created a "UserControl" that acts like a RadWindow.  The steps are outlined in this HowTo. 

  
  

  This is a plain control, nothing additional in the code-behind (like service calls or anything, just a call to InitializeComponents() like in the example).
  
  This is Silverlight 4, and opening the "window" within Blend 4, I can't get design-time support.  The error is:
  
  "Exception: Error HRESULT E_FAIL has been returned from a call to a COM component."
  
  The source code is just:
  
  

  <telerik:RadWindow

      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"

      xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"

      mc:Ignorable="d"

      x:Class="Sample.UserControl1"

      d:DesignWidth="640" d:DesignHeight="480">

    

      <Grid x:Name="LayoutRoot"/>

  </telerik:RadWindow>

  
  I've worked around it by putting all my content into yet another UserControl, but this isn't the best solution.  With my current approach, I have a lot of pass-through methods and bindings going on.  Note that Blend 4 fully supports a ChildWindow.  Also the designer in Visual Studio 2010 renders it perfectly, but I prefer to do my designing in Blend.
  
  The file version of my Telerik.Windows.Controls.Navigation is 2010.2.812.1040
  
  Thanks in advance for your help.
  -Damien
  
  

  
  

  Reply

• George George

  Posted on Sep 17, 2010 (permalink)

  Hi Damien,

  I tried to reproduce the problem with RadWindow in Blend 4, but to no avail. Could you please specify on what OS you are running Blend 4.
  
  I will be glad to assist you further.
   

  Best wishes,
  George
  the Telerik team

  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

  Reply



• dwhite

  Posted on Sep 17, 2010 (permalink)

  I'm running Windows 7 x64 with Blend Version 4.0.20525.0.
  
  -Damien

  Reply

• George George

  Posted on Sep 22, 2010 (permalink)

  Hi,

  Could you check if your project has references to Telerik.Windows.Controls.Navigation and Telerik.Windows.Controls? Also, if you send a running sample that reproduces the problem it would be of great help.
  
  I will be glad to assist you further.
  
  
  

  All the best,
  George
  the Telerik team

  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

  Reply

• dwhite

  Posted on Sep 22, 2010 (permalink)

  I ended up solving the issue.  In the project I was referencing the two assemblies from outside of the GAC.  Once I changed the references to the GAC, Blend started working...
  
  -Damien

  Reply

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