Sams Teach Yourself C#™ in 24 Hours

Storing Pictures in an Image List

Many of the controls I'll be discussing in this hour support the capability to attach pictures to different types of items. For instance, the Tree View control, which is used in Explorer for navigating folders, displays images next to each folder node. Not all these pictures are the same; the control uses specific pictures to denote information about each node. It would have been possible for Microsoft to make each control store its images internally, but that would be highly inefficient because it wouldn't allow controls to share the same pictures; you'd have to store the pictures in each control that needed them. Instead, Microsoft created a control dedicated to storing pictures and serving them to other controls: ...