The Slider control as shipped with the Windows Phone Developer Tools has some problems, both due to how it was templated, and also because it was originally designed for the desktop, where mice are very good at hitting small targets. The visible Thumb was removed, and the invisible Thumb, even when...

How do you prevent the Slider from returning "ugly" values, and get it to "snap" to only the values that you want, such as integers, or multiples of a certain step value such as 0.125? One way to do this is to override OnValueChanged, but it helps to understand how that mechanism works. Below is an example...