Cc judge whether the local file is open

From , 4 Years ago, written in C#, viewed 52 times.

 public class FileStatus
    {
        [DllImport("kernel32.dll")]
        private static extern IntPtr _lopen(string lpPathName, int iReadWrite);
 
        [DllImport("kernel32.dll")]
        private static extern bool CloseHandle(IntPtr hObject);
 
        private const int OF_READWRITE = 2;
 
        private const int OF_SHARE_DENY_NONE = 0x40;
 
        private static readonly IntPtr HFILE_ERROR = new IntPtr(-1);
 
        public static int FileIsOpen(string fileFullName)
        {
            if (!File.Exists(fileFullName))
            {
                return -1;
            }
 
            IntPtr handle = _lopen(fileFullName, OF_READWRITE | OF_SHARE_DENY_NONE);
 
            if (handle == HFILE_ERROR)
            {
                return 1;
            }
 
            CloseHandle(handle);
 
            return 0;
        }
    }
 
 
//csharp/6027

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Cc judge whether the local file is open

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