直接使用流判断
public static bool isFileLocked(string pathName)
{
try
{
if (!File.Exists(pathName))
{
return false;
}
using (var fs = new FileStream(pathName, FileMode.Open, FileAccess.Read, FileShare.None))
{
fs.Close();
}
}
catch
{
return true;
}
return false;
}
方法二
调用dll的一些方法
public class FileStatus
{
[DllImport("kernel32.dll")]
private static extern IntPtr _lopen(string pathName, int readWrite);
[DllImport("kernel32.dll")]
private static extern bool CloseHandle(IntPtr hObject);
private const int OF_READWRITE = 2;
private const int OF_SHARE_DENY_NONE = 0x480;
private static readonly IntPtr HFILE_ERROR = new IntPtr(-1);
public static bool FileIsOpen(string pathName)
{
if (!File.Exists(pathName))
{
return false;
}
IntPtr handle = _lopen(pathName, OF_READWRITE | OF_SHARE_DENY_NONE);
if (handle == HFILE_ERROR)
{
return true;
}
CloseHandle(handle);
return false;
}
}
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