Creating a custom-shaped button with one rounded corner

Question

I need to create a button in WPF that has a custom shape. Specifically, I want it to have rounded corners, like an ellipse. Here is a picture:

Answer 1

You could use a ControlTemplate to achieve that:

Than you apply it to the button:

If you need some references to draw the "Path" check this MSDN link.

Update

To show the content you should use a ContentPresenter, something like this:

In the button:

        test