Hello Everyone,
I am trying to access C# method by using C# DLL from XOJO Tool.
I have follow the procedure Jim have define in the following post:
https://forum.xojo.com/7079-using-c-classes-in-xojo
and everything is configure correctly but when i execute the program, it gives me error NilObjectException was not handled, even when i am passing proper parameter.
Below is the C# code:
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace XojoStuff
{
[Guid("DB038D2E-BD4D-44A7-BE64-4844FF07F870")]
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
public interface IManagedInterface {[DispId(1)] int PrintHi(string name); }
[Guid("AB46D07F-6920-4114-924B-5E37BED3A65E")]
[ClassInterface(ClassInterfaceType.None)]
public class InterfaceImplementation : IManagedInterface
{
public int PrintHi(string name)
{ MessageBox.Show(name); return 1; }
}
}
Below is the calling from Xojo:
dim o as New XOJOCSDLL.InterfaceImplementation
Call o.PrintHi("Hello")
It should show message box when the execution file is run with the message of Hello