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

		public Rect MakeVisible (UIElement visual, Rect rectangle)
		{
			Rect exposed = new Rect (0, 0, 0, 0);
			
			foreach (UIElement child in Children) {
				if (child == visual) {
					if (Orientation == Orientation.Vertical) {
						if (rectangle.X != HorizontalOffset)
							SetHorizontalOffset (rectangle.X);
						
						exposed.Width = Math.Min (child.RenderSize.Width, ViewportWidth);
						exposed.Height = child.RenderSize.Height;
						exposed.X = HorizontalOffset;
					} else {
						if (rectangle.Y != VerticalOffset)
							SetVerticalOffset (rectangle.Y);
						
						exposed.Height = Math.Min (child.RenderSize.Height, ViewportHeight);
						exposed.Width = child.RenderSize.Width;
						exposed.Y = VerticalOffset;
					}
					
					return exposed;
				}
				
				if (Orientation == Orientation.Vertical)
					exposed.Y += child.RenderSize.Height;
				else
					exposed.X += child.RenderSize.Width;
			}
			
			throw new ArgumentException ("Visual is not a child of this Panel");
		}