In this tutorial I will show how to create a rounded corner on an object. In a previous tutorial Scaling Objects with a Slider control in Silverlight, The design of the slider control I wanted had a rounded edge. Programmatically you can set the RadiusX and RadiusY properties but I wanted to do this within Microsoft Blend design mode.
The object I wanted to edit was the ‘horizontaltracklargechangedecreaserepeatbutton’ layer in the slider control. Once I was within the object I created a ‘Rectangle’, selected it and handles in the top left corner appeared. Simply drag in and out on the handles and all corners of the objects will go from square to rounded. FYI, the RadiusX and RadiusY of this control is 2.75.