Hi,

Canvas.Left and Canvas.Top are attached properties, defined in the Canvas panel class.
There are two ways to get the value of these properties from a specific instance (of any dependency object type):

• Using public Canvas static methods:
  

  
  
  float left = Canvas.GetLeft(element);
  
  Canvas.SetLeft(element, newLeft); // to set the value
  
  

• Using the generic GetValue/SetValue from DependencyObject:
  

  
  
  float left = (float)element.GetValue(Canvas.LeftProperty);
  
  element.SetValue(Canvas.LeftProperty, newLeft); // to set the value
  
  

  
  Do you have any trouble using any of these?