private void GridOfCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
GridOfCanvas.CaptureMouse();
_last = e.GetPosition(GridOfCanvas);
isDragged = true;
}
private void GridOfCanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
GridOfCanvas.ReleaseMouseCapture();
isDragged = false;
}
