c# 调用 WINDOW API DLL

using System.Runtime.InteropServices;



 [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int MessageBox(int hWnd, String strMessage, String strCaption, uint uiType); 


//调用

  MessageBox(0, "您好，这是 PInvoke！", ".net", 0);