摘要： 一、using System;using System.Runtime.InteropServices;using System.Windows.Forms;using System.Diagnostics;using System.Reflection;public class OneInstnace{//Api声明，并声明一[DllImport("User32.dll")] private static extern bool ShowWindowAsync( IntPtr hWnd, int cmdShow);[DllImport("User32.dll&q 阅读全文