C#判断文件是否被打开占用

来源：互联网发布：网络规划设计师教材编辑：程序博客网时间：2024/05/02 21:51

//C#判断文件是否被打开占用using System.IO;using System.Runtime.InteropServices;[DllImport("kernel32.dll")]public static extern IntPtr _lopen(string lpPathName, int iReadWrite);[DllImport("kernel32.dll")]public static extern bool CloseHandle(IntPtr hObject);public const int OF_READWRITE = 2;public const int OF_SHARE_DENY_NONE = 0x40;public readonly IntPtr HFILE_ERROR = new IntPtr(-1);private void button1_Click(object sender, EventArgs e){    string vFileName = @"c:\temp\temp.txt";    if (!File.Exists(vFileName))    {        MessageBox.Show("文件都不存在，你就不要拿来耍了");        return;    }    IntPtr vHandle = _lopen(vFileName, OF_READWRITE | OF_SHARE_DENY_NONE);    if (vHandle == HFILE_ERROR)    {        MessageBox.Show("文件被占用！");        return;    }    CloseHandle(vHandle);    MessageBox.Show("没有被占用！");}

From http://bbs.csdn.net/topics/380180570