private void Resize_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
e.Handled = true;
if (_appointment.CategoryID != "")
{
if (_appointment.Category.ReadOnly)
{
GenericFunctions.ShowReadOnlyMessage();
return;
}
}
if (_appointment.IsRepeating)
{
throw (new NotImplementedException("Resizing recurring items is not currently supported."));
}
IInputElement _sender = (IInputElement)sender;
_mouseOffset = Mouse.GetPosition(_sender);
_isResized = false;
Mouse.Capture(_sender);
}