DateTime extension methods

Converts DateTime to String and back based on format set in converter parameter

Helper class to address differences in drawing shapes in WPF and Silverlight.

Facilitates invalidation of various FrameworkElement aspects.

Helps overcome differences in handling of geometries between WPF and Silverlight.

Reverses Visibility value Hidden and Collapsed becomes Visible, Visible becomes Collapsed

Helps unify handling of differing aspects of TextBlock in Silvelright and WPF.

Helper class to unify certain aspects of navigating VisualTree in WPF and Silvelright.

Types of control invalidation.