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);