pass rectangle into a events function

        private void button2_Checked(object sender, RoutedEventArgs e)
        {
       
        //create new rectengle

           Rectangle rect = new Rectangle();
           rect.Visibility = Visibility.Visible;
           rect.Width = slider1.Value;
           rect.Height = slider2.Value;
           SolidColorBrush myBrush = new SolidColorBrush(Colors.Green);
           rect.Stroke = Brushes.Red;
           rect.StrokeThickness = 1;
           rect.Fill = myBrush;

            // Creat event to the new rect

           rect.MouseLeftButtonDown += rect_MouseLeftButtonDown;
           rect.MouseLeftButtonUp += rect_MouseLeftButtonUp;
           rect.MouseMove += rect_MouseMove;
           

          

            myCanvas.Children.Insert(0, rect);

        }


private bool _isRectDragInProg;

// one of the event function
//Function is called but the value rectangle unidentified
     private void rect_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

           
            _isRectDragInProg = true;
          
            //Here I want to pass the rectangle

                rect.CaptureMouse();
           
        }