DataBinding with Canvas.Left doesn't seem to work

[onslauth]

Hi,

I am trying to use data binding with a user control to move the control that is placed on a canvas. The data binding for the Canvas.Left property doesn't seem to work, but when tied to the Width property it works fine.

I have created an example in the following repo: https://github.com/onslauth/CanvasDataBinding

The example should work as follows:

• If you click and drag the left hand side of the blue square, you should be able to move it left or right ( doesn't seem to work )
• If you click and drag the right hand side of the square, it should increase its width ( works correctly )

There is also some commented out code in the CustomRectangle.xaml.cs in the method CustomRectangle_PointerMoved that instead of updating the variable, will use SetValue instead. That works, but the effect is very jerky and seems to jump around.

Does anyone know if this is a bug, or if this is incorrect, the proper way to make this work?