private static BY_HANDLE_FILE_INFORMATION GetFileInformationByHandleNet(IntPtr hFile)
{
BY_HANDLE_FILE_INFORMATION ret = new BY_HANDLE_FILE_INFORMATION();
if (!GetFileInformationByHandle(hFile, out ret))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
return(ret);
}
public static bool IsSameFile(string path1, string path2)
{
bool ret = false;
//Check that the files exist... if they don't then they can't be the same
if (!File.Exists(path1))
{
return(false);
}
if (!File.Exists(path2))
{
return(false);
}
//Open file 1
IntPtr file1 = CreateFileNet(path1, EFileAccess.GenericRead,
EFileShare.Read | EFileShare.Write, IntPtr.Zero,
ECreationDisposition.OpenExisting, EFileAttributes.Normal, IntPtr.Zero);
//Open file 2
try
{
IntPtr file2 = CreateFileNet(path2, EFileAccess.GenericRead,
EFileShare.Read | EFileShare.Write, IntPtr.Zero,
ECreationDisposition.OpenExisting, EFileAttributes.Normal, IntPtr.Zero);
try
{
BY_HANDLE_FILE_INFORMATION file1Info = GetFileInformationByHandleNet(file1);
BY_HANDLE_FILE_INFORMATION file2Info = GetFileInformationByHandleNet(file2);
if (file1Info.VolumeSerialNumber == file2Info.VolumeSerialNumber &&
file1Info.FileIndexHigh == file2Info.FileIndexHigh &&
file1Info.FileIndexLow == file2Info.FileIndexLow)
{
ret = true;
}
}
finally
{
CloseHandleNet(file2);
}
}
finally
{
CloseHandleNet(file1);
}
return(ret);
}
private static extern bool GetFileInformationByHandle(IntPtr hFile,
out BY_HANDLE_FILE_INFORMATION lpFileInformation);
