System.Windows.Controls.VirtualizingStackPanel.SetHorizontalOffset C# (CSharp) Method

		public void SetHorizontalOffset (double offset)
		{
			if (offset < 0 || ViewportWidth >= ExtentWidth)
				offset = 0;
			else if (offset + ViewportWidth >= ExtentWidth)
				offset = ExtentWidth - ViewportWidth;
			
			if (HorizontalOffset == offset)
				return;
			
			HorizontalOffset = offset;
			
			if (Orientation == Orientation.Horizontal)
				InvalidateMeasure ();
			else
				InvalidateArrange ();
			
			if (ScrollOwner != null)
				ScrollOwner.InvalidateScrollInfo ();
		}