ggarung

1. Write and compile the unmanaged code.
2. Generate an assembly containing definitions of the COM types using the tlbimp.exe utility so that allow the .NET client to interact with the exposed types.
3. Install the assembly in the global assembly cache. (Optional)
4. Write and compile the .NET client code that reference the assembly containing the COM type definitions.

Public Function Add (ByVal x As Integer, ByVal y As Integer) As Integer
         Add = x + y
End Function

tlbimp VBServer.dll /out:NetClient.dll

gacutil /i NetClient.dll

csc TestClient.cs /r: NetClient.dll

namespace Addvbserver
{
    using System;
    using NetClient;
    public class TestClient
    {
        public static int Main(string[] args)
        {
            Add c = new Add();
            Console.WriteLine(c.Add(2,2));
            return 0;
        }

    } 
} 

namespace Addvbserver
{
    using System;
    using NetClient;
    public class Client
    {
        public static int Main(string[] args)
        {
            Add c = new Add();
            _Add gg =c;
            Console.WriteLine(gg.Add(2,2));
            return 0;
        }

    } 
}