Accessing the ScrollViewer of a ListBox from C#

Question

I\'d like to change the properties of a ScrollViewer of a ListBox from C#.

I found this question here on Stackoverflow. I took the accepted

Answer 1

I've modified the great answer of @punker76 to create an extension method for Visual and provide explicit return type:

   public static class Extensions
   {
      public static T GetDescendantByType(this Visual element) where T:class
      {
         if (element == null)
         {
            return default(T);
         }
         if (element.GetType() == typeof(T))
         {
            return element as T;
         }
         T foundElement = null;
         if (element is FrameworkElement)
         {
            (element as FrameworkElement).ApplyTemplate();
         }
         for (var i = 0; i < VisualTreeHelper.GetChildrenCount(element); i++)
         {
            var visual = VisualTreeHelper.GetChild(element, i) as Visual;
            foundElement = visual.GetDescendantByType();
            if (foundElement != null)
            {
               break;
            }
         }
         return foundElement;
      }

   }

You can now call it by SomeVisual.GetDescendantByType and it returns either already a correct typed ScrollViewer or null (which is default(T))