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See more: WPF grid size Controls controller , +
Hey guys,
I have a Canvas inside a grid, the Height and Width of the canvas is set to be Auto.
In my code behind, I need to draw a shape (i.e. Line, Rectangle) inside this Canvas and set the size of the shape to the size of Canvas (i.e. a Rectangle which has a Height same as the canvas and a width half of the canvas width)
I used the following :

double H = A_Canvas.Height;
double H = A_Canvas.ActualHeight;


For the first one, I get NaN and for the second one I get 0.

How should I do this ?!
Posted 2-Jan-12 21:27pm

1 solution

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Solution 1

It depends on where you are trying to find out your canvas height.
You could override the OnRenderSizeChanged in the containing view. At this point the canvas has been given a size and ActualHeight with then work correctly.
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