October 2003
Intermediate to advanced
736 pages
15h 25m
English
Content preview from Windows Forms Programming in Visual Basic .NET
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User Controls
Deriving from an existing control is one way to reuse it, but the most popular form of reuse for a control is simple containment, as you're accustomed to doing when building custom forms using existing controls. A user control is a way to contain a set of other controls for reuse as a set, producing a kind of “subform.” For example, imagine that we wanted a control that composed our FileTextBox control with a “…” button for browsing. In use, it would look like the one shown in Figure 8.21.
Figure 8.21. A Sample User Control in Action
It's hard to tell from the picture, but as far as the form in Figure 8.21 is concerned, it's containing ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.