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having problems getting the extended WPF toolkit to work - WYSIWYG designer breaks

Aug 4, 2011 at 4:45 PM

Hi, I've been trying to get this working for over a day now.

I'm installing the toolkt as instructed (Win7, .Net 4, VS2010):

  1. Install .NET Framework 4.0
  2. Download the ExtendedWPFToolkit_Binaries
  3. Unzip the
  4. Reference the binaries in your project:
  5. Reference WPFToolkit.Extended.dll in your project
  6. Add a using statement ("using Microsoft.Windows.Controls;") to the top of .cs files
  7. Add a new xmlns (for example, xmlns:extToolkit="") to the top of XAML files
  8. Remember to use the namespace prefix (in the above example, <extToolkit: ...>) in the body of your XAML

My apps run fine, but the WYSIWYG WPF Window editor won't work as soon as I reference a toolkit control - I get no compilation errors, but the editor says Problem Loading / Reload The Designer.

My XAML is this:

<Window x:Class="FileNameChanger.Misc.XAMLPlay"
Title="XAMLPlay" Height="300" Width="300">

< /Window>

Does anyone have any help / advice please?

Thanks a lot!

Aug 4, 2011 at 4:47 PM

Please refer to this thread:

Aug 4, 2011 at 5:21 PM

Dude, you're great. Cheers.