What is the Dependency Property?

You can consider Dependency properties like simple CLR properties with some additional features provided. Additional features include Power of Binding these to simple CLR property, support for animation and so on.

For example:

Consider bellow xaml code snippet:

Here, Text is Dependency Property defined under class TextBox. So to this Dependency Property I bound EmpName which is simple CLR property.

For more information on Dependency property refer bellow msdn link:

https://msdn.microsoft.com/library/ms752914(v=vs.100).aspx