C#判断文件是否被其他程序占用
c#使用win32接口 判断当前文件是否被其他程序占用着
public static class FileStatusHelper
{
[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 static readonly IntPtr HFILE_ERROR = new IntPtr(-1);
public static bool IsFileOccupied(string filePath)
{
IntPtr vHandle = _lopen(filePath, OF_READWRITE | OF_SHARE_DENY_NONE);
CloseHandle(vHandle);
return vHandle == HFILE_ERROR ? true : false;
}
}