Advanced Tree View Tricks

The TreeView is a sophisticated control, and it provides a great deal of customization possibilities. Some of the additional ap Table 6-7 TreeView Appearance Properties Table 6-7 TreeView Appearance Properties Specifies the left-to-right distance ShowLines, ShowPlusMinus, and ShowRootLines When set to true, nodes are sorte< sort order, other than to add the nc The TreeNode also provides some useful properties that haven't been discussed yet (Table 6-8). Mainly, these properties allc and...

Index

EditO method of DataGridColumnStyle class, 383 editing, overriding methods to prevent, 383-384 Editor attribute, 338 EditValueO method of UlTypeEditor class, 340 ellipse email address, validating with regular expression, 140-141 EndUpdateO method of ListView control, 219-220 comparison of database integers with, 370 error messages, user response to, 17-18 overriding in inherited form, 197-198 events for custom controls, filtering, 327-329 ExpandO method of TreeNode collection, 230 ExpandAIIO...

The View Mediator Pattern

The approach that .NET encourages circumvents this problem by using events. When you create a form in Visual Studio .NI handling logic is inserted as a series of special methods, which are added to the custom form class. In other words, every form acts as a giant switchboard for all the controls it contains. This type of design pattern, which is so View-Mediator pattern. It dictates that one central class organizes each individual window. Here's the same text box example you saw earlier,...