get the coordinates of a FrameworkElement bounding rectangle

Question

How does one get the upper left coordinates of a framework elements bounding rectangle?

    let fe : FrameworkElement = ea.Item.Content 
    let p = fe.TranslatePoint(new Point(0.0, 0.0), null)

The preceding code is giving me: The field, constructor or member 'TranslatePoint' is not defined. I am confused as MSDN Shows this as a memeber of FrameworkElement inherited from UIElement:

http://msdn.microsoft.com/en-us/library/system.windows.frameworkelement_members(v=VS.100).aspx

score 15 · Accepted Answer · answered May 23 '10 at 18:22

15

Use element.TranslatePoint(new Point(0.0, 0.0), null) to get the upper left coordinates of element relative to the logical root element. If you want it relative to another element, specify it at the second parameter instead of null. You can then use ActualWidth and ActualHeight to compute the whole rectangle.

answered May 23 '10 at 18:22

Julien Lebosquain

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The field, constructor or member 'TranslatePoint' is not defined – akaphenom May 24 '10 at 16:31
6

It is defined in WPF. In Silverlight, you must use `element.TransformToVisual(root).Transform(new Point(0.0, 0.0))`. – Julien Lebosquain May 24 '10 at 17:13
Bingo! Do you know why that is? – akaphenom May 24 '10 at 17:59
I suppose that methods that are just shortcuts to other methods are not present in Silverlight to avoid bloating the assembly. – Julien Lebosquain May 24 '10 at 18:00
Doesn't work very well for me. I'm getting incorrect positions in a grid. – Epirocks Feb 16 '17 at 10:52

get the coordinates of a FrameworkElement bounding rectangle

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