Adding a type from external assemblies to ToolboxControl

Question

I am trying to do something like this:

 

   
  ToolboxControl ctrl = new ToolboxControl();
  Assembly assembly = Assembly.LoadFile(file);
  var category = new ToolboxCategory(assembly.GetName().Name);
  foreach (Type t in assembly.GetTypes())
  {
    var wrapper = new ToolboxItemWrapper(t, t.Name);
    category.Add(wrapper);
  }
  ctrl.Categories.Add(category);

 
  

i.e. adding ToolboxItemWrappers for each type found in an assembly. However the last line throws the following exception (see image)

http://img41.imageshack.us/img41/2261/7xvqv.png

All dependencies of the external assembly are also referenced in the main (WPF) application. So what's wrong here and how to fix it?

 

Answer 1

any idea?

Answer 2

Hi Louis Rhys,

I move this thread here because of it's likely to get quicker and better responses to WorkFlow develop issues at http://social.msdn.microsoft.com/Forums/en-US/wfprerelease/threads where WorkFlow develop experts live in.

 

Have a nice day!

 

Best regards

---

Yves Zhang [MSFT]
MSDN Community Support | Feedback to us
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Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 3

I would guess it is probably related to using Assembly.LoadFile, see e.g. "Assembly.Load vs Assembly.LoadFrom vs Assembly.LoadFile".

Tim

Answer 4

Can you reproduce the same exception by calling

Type.GetType(myCustomType.AssemblyQualifiedName);

?