PRB: "Assembly Generation Failed" Error Message When You Try to Build a Managed DLL Without a Strong Name

Microsoft Visual C# .NET

1. In Microsoft Visual Studio .NET, open the properties of the Visual C# project in which you want to reference the COM component.
2. In the tree, click Common Properties, and then click General.
3. In the Wrapper Assembly Key File field, add the key file.
4. Rebuild the project.

Microsoft Visual Basic .NET

1. In Microsoft Visual Studio .NET, open the properties of the Visual Basic project in which you want to reference the COM component.
2. Delete the existing reference to your COM component.
3. Run Tlbimp.exe from a command prompt on your COM DLL to generate an Interop assembly that has a strong name, as follows:
   tlbimp.exe MyCOMDLL.dll /keyfile:KeyFile.snk /out:MyCOMInterop.dll
4. Add a reference to the output file from Tlbimp.exe to your Visual Basic .NET project.
5. Rebuild the project.

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Steps to Reproduce the Behavior

1. In Visual Studio .NET, create a new unmanaged Active Template Library (ATL) project named Project1.
2. Add an ATL simple object named Class1.
3. Add a method without parameters named Test to the IClass1 interface.
4. Build the solution.
5. Add a Visual C# .NET Class Library project named Project2 to the solution.
6. Add a reference to Project1 in Project2.
7. At the top of your class1 Visual C# file, add the following:

   using Project1;
   					

8. Derive Class1 from IClass1, as follows:

   public class Class1:IClass1
   					

9. Implement the Test method in your Visual C# class:

   public void Test()
   {
   }
   					

10. Give your assembly a strong name. To do this, generate a .snk file with Sn.exe, and then add the file to AssemblyKeyFile.
11. Build Project2. You receive an error message.

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