Question

This might be a stupid question.

1. Dependency properties are static in nature.
2. Button (which is basically a public class) has somany dependnency properties.

If I use two button in my window, that means different instances of same class…but the static property should be only one. If I change Dependency property of one button change, other should also be changed, right ?

Thanks
Anish

Answer 1

A DependencyProperty is not the same as a regular property. It is a property definition that depends on another property to get it’s value. It’s not meant to contain a value, but instead contains a pointer to another value.

If you do something like <TextBlock Text="Test" />, you are pointing the value of the Text DepdencyProperty to a string value which says “Test”. If you do <TextBlock Text="{Binding UserName}" />, you are pointing the value to a property on the TextBlock’s DataContext (usually a class) called UserName.

I actually wrote something here about how DependencyProperties differ from regular properties if you’re interested