Calling dll C# in VBScript

[nacchio]

Hi,

I have a C# dll in VS2010 like this:

namespace A
{
public class B
{
public int GetValue() { return 1; }
}
}

In QTP I added the following lines:

Set obj = DotNetFactory("A.B","C:\\path\\myLibrary.dll")
msgBox obj.GetValue()


When QTP run the first line of code it launchs this error:

"The format file "myLibrary.dll" is invalid"


How can I resolve it?


Thank in advance

Andrea