How to Call C# Class Library (Dll) Method in PowerBuilder 11

If you use .NET target of PB 11, you can call C# class using .NET
Assembly.

C# class dll
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using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace ClassLibrary1
{
    [ClassInterface(ClassInterfaceType.AutoDual)]
    public class Calc
    {
            public int Add(int x, int y)
            {
                return x + y;
            }

            public int Sub(int x, int y)
            {
                return x - y;
            }
    }
}
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In the .NET Windows form target, define the dll above as a .NET
Assembly.
Now you can call the dll.

Power Builder Script
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long i,j,k
i = 5
j = 4
 #IF Defined PBDOTNET Then
         ClassLibrary1.Calc l_ClassLibrary1
     l_ClassLibrary1 = create ClassLibrary1.Calc
          k =                 l_ClassLibrary1.Add( i,j)
 #END IF
 messagebox("Add( i,j)",string(k))
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