System.Design cannot be referenced in Class Library?
- by Alex Yeung
Hi all,
I have a very strange problem that I cannot fix and don't know what's going on... I am using VS 2010 Premium and .NET 4.0.
Here are my steps to simulate the problem.
Step 1. Create a new VB class library project named "MyClassLib"
Step 2. Create a new class named "MyTestingClass".
Public Class MyTestingClass
Inherits System.ComponentModel.Design.CollectionEditor
Public Sub New()
MyBase.New(GetType(List(Of String)))
End Sub
End Class
Step 3. Add two .net reference. "System.Design" and "System.Drawing".
Step 4. Create a new VB console application named "MyClassExe"
Step 5. Add "MyClassLib" reference to "MyClassExe".
Step 6. Open Module1.vb in "MyClassExe" project
Step 7. In the Main method, type
Dim a = New MyClassLib.MyTestingClass()
Step 8. Try to compile "MyClassLib". It doesn't have problem.
Step 9. Try to compile "MyClassExe". It cannot compile because the WHOLE MyClassLib cannot be found!!!
I have no idea what's going on?
Moreover, the same case happens in C#.
Does anyone know what's the problem with "System.Design"?
Thank!!!
