[Description] Gets a value that indicates whether the dependency property identified by this DependencyProperty instance is a read-only dependency property. [Name] 
ReadOnly
D e f a u l t M e t a d a t a
G l o b a l I n d e x
N a m e
O w n e r T y p e
P r o p e r t y T y p e
R e a d O n l y
V a l i d a t e V a l u e C a l l b a c k