Workspace AddIn that contains a WPF control (1 Comment)

Topic by Justin Young

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I am re-writing an Add-In from scratch and decided that a WPF user control made more sense than trying to deal with layout issues in WinForms.  

So I created a new System.Windows.Forms.Integration.ElementHost, added my WPF control as a child to that, and added the element host to the ElemenetHost to the ControlCollection.  When I attach to the RightNowCX.exe process and debug, then open the workspace I have added my add-in to, I am able to get through all of my code without error.   The add-in will render initially, but after the WorkspaceAddIn constructor exits the add-in disappears from view and I get the following errors:

System.ArgumentException occurred
  HResult=-2147024809
  Message=Parameter is not valid.
  Source=System.Drawing
  StackTrace:
       at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
  InnerException:

System.ArgumentException occurred
  HResult=-2147024809
  Message=Width and Height must be non-negative.
  Source=WindowsBase
  StackTrace:
       at System.Windows.Size..ctor(Double width, Double height)
  InnerException:

Once I click "Do Not Send" the error goes away, and the control re-renders properly.

I have tested this methodology outside of the RightNow framework, and it works perfectly.  There are also many documented instances of how to do this, such as here.  I have already tried setting minimum heights and widths on both my WPF control and the ElementHost.

I have attached my code.

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