IXRScrollViewer::GetViewportHeight (Compact 2013)
This method retrieves a value that contains the vertical size of the viewable content in this scroll viewer.
virtual HRESULT STDMETHODCALLTYPE GetViewportHeight( float *pValue ) = 0;
[out] Pointer to a float value that indicates the vertical size, in pixels, of the viewable content.
Returns an HRESULT that indicates success or failure.
The extent is the area that includes all the content of this scroll viewer. The visible area of the content is the viewport. You cannot set the viewport height directly. You can set it indirectly by calling the inherited method IXRFrameworkElement::SetHeight.
.NET Framework Equivalent