StackPanel.ViewportHeight Property   
Definition
Important
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Gets a value that contains the vertical size of the content's viewport.
public:
 property double ViewportHeight { double get(); };public double ViewportHeight { get; }member this.ViewportHeight : doublePublic ReadOnly Property ViewportHeight As DoubleProperty Value
The Double that represents the vertical size of the content's viewport. The default value is 0.0.
Implements
Remarks
The returned value is described in Device Independent Pixels.