Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4

6.7. Range-Based Controls

WPF includes three controls that use the concept of a range. These controls take a numeric value that falls in between a specific minimum and maximum value. These controls—ScrollBar, ProgressBar, and Slider—all derive from the RangeBase class (which itself derives from the Control class). But although they share an abstraction (the range), they work quite differently.

The RangeBase class defines the properties shown in Table 6-4.

Table 6.4. Properties of the RangeBase Class

Name	Description
Value	The current value of the control (which must fall between the minimum and maximum). By default, it starts at 0. Contrary to what you might expect, Value isn't an integer—it's a double, so it accepts fractional values. You can react ...