Hi all,
First of all thanx to read this.

I have created a VB dll and it is registered into my local machine.
I am using this dll and all classess and methods into my .net application;

Exception Details:System.InvalidCastException: QueryInterface for interface testdll._Class1 failed.

Line 25: Dim vb6_class As New testdll.Class1Class() Line 26:Line 27: TextBox1.Text = CInt(vb6_class.Hi)Line 28:

VBCode
Public Function Hi() As Integer

Hi = 44

End Function
can u provide solution for this and some guide line about COM objects.