避免Exe重复启动后，新问题：如何使已经启动的程序再次显示到最前面。

Question

参考
http://blog.csdn.net/knight94/archive/2006/03/16/625809.aspx

Answer 1

估计得用Win32api吧，用FindWindow找到窗体，还是置于最前

Answer 2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
namespace WindowsApplication16
{
    public partial class Form1 : Form
    {
        public const int SW_HIDE = 0;
        public const int SW_NORMAL = 1;
        public const int SW_SHOWMINIMIZED = 2;
        public const int SW_SHOWMAXIMIZED = 3;        [DllImport("User32.dll")]
        public static extern void SetForegroundWindow(IntPtr hwnd);        [DllImport("User32.dll")]
        public static extern IntPtr GetForegroundWindow();        [DllImport("User32.dll")]
        public static extern int GetWindowThreadProcessId(IntPtr hwnd, IntPtr pProcId);        [DllImport("User32.dll")]
        public static extern bool AttachThreadInput(int idAttach, int idAttachTo, int fAttach);        [DllImport("User32.dll")]
        public static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {            Process[] plist = Process.GetProcesses();
            int cid = Process.GetCurrentProcess().Id;            for (int i = 0; i < plist.Length; i++)
                if (cid != plist[i].Id)
                {
                    string s = plist[i].ProcessName;
                    if (s == @"Uedit32")
                    {
                        MessageBox.Show(s);
                      
                        ShowWindowAsync(plist[i].MainWindowHandle, SW_SHOWMAXIMIZED);
                       
                        SetForegroundWindow(plist[i].MainWindowHandle);                        break;
                    }                }
        }
    }
}

Answer 3

Process[] plist = Process.GetProcesses();
            int cid = Process.GetCurrentProcess().Id;            for (int i = 0; i < plist.Length; i++)
                if (cid != plist[i].Id)
                {
                    string s = plist[i].ProcessName;
                    if (s == @"Uedit32")
                    {
                        MessageBox.Show(s);
                      
                        ShowWindowAsync(plist[i].MainWindowHandle, SW_SHOWMAXIMIZED);
                       
                        SetForegroundWindow(plist[i].MainWindowHandle);                        break;
                    }                }以上部分如果放在Main函数里应该更好一些吧
否则，他还是会生成一个画面。
请指教。