public virtual void Lock(long position, long length)
{
if (handle == MonoIO.InvalidHandle)
{
throw new ObjectDisposedException("Stream has been closed");
}
if (position < 0)
{
throw new ArgumentOutOfRangeException("position must not be negative");
}
if (length < 0)
{
throw new ArgumentOutOfRangeException("length must not be negative");
}
if (handle == MonoIO.InvalidHandle)
{
throw new ObjectDisposedException("Stream has been closed");
}
MonoIOError error;
MonoIO.Lock(handle, position, length, out error);
if (error != MonoIOError.ERROR_SUCCESS)
{
// don't leak the path information for isolated storage
throw MonoIO.GetException(GetSecureFileName(name), error);
}
}
