FIX: Unmanaged debugging not possible until you install Visual C++ .NET (813134)

MORE INFORMATION

Steps to Reproduce the Behavior

Steps to Create an Unmanaged DLL:

1. In Visual Basic 6.0, create a new ActiveX DLL project. By default, Class1 is created.
2. Change the name of the Class1 module to MyClass.
3. On the Project menu, click Project1 Properties.
4. Name the project MyUnmanagedDll.
5. Paste the following code in the MyClass module:

   Public Function GetHelloString() as String
       GetHelloString = "Hello from Unmanaged Code"
   End Function

6. Save the MyUnmanagedDll project.
7. To create MyUnmanagedDll.Dll, click File, and then click Make MyUnmanagedDll.Dll .

Steps to Refer an Unmanaged DLL from Managed Code:

1. In Visual Studio .NET 2002, create a new Visual Basic .NET Console Application project, and name the project MySampleApplication.
2. In Solution Explorer, right-click Reference, and then click Add Reference.
3. Click the COM tab.
4. Under Component Name, click to select MyUnmanagedDll, and then click OK.
5. Paste the following code in Main sub:

   Sub Main()
       Dim myFunction as MyUnmanagedDll.MyClassClass
       myFunction = New MyUnmanagedDll.MyClassClass()
      Console.WriteLine (myFunction.GetHelloString())
   End Sub

6. Insert a break point on the following line of code:

   Console.WriteLine (myFunction.GetHelloString())

7. In Solution Explorer, right-click MySampleApplication, and then click Properties.
8. In the Properties dialog box, click Debugging, and then click to select Unmanaged code debugging.
9. Press F5 to debug the application. You receive the error message that is described in the "Symptoms" section of this article.