title: Drag and Select and re-size elements in Canvas WPF c#
body: <p>Now I can draw rectangle in canvas using a mousedown and mousemove events 
  I want to select rectangles  and drag them in canvas ( move ) and resize them <img src="https://i.stack.imgur.com/VqIx0.jpg" alt="enter image description here"></p>
  
  <p>how ?</p>