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05-Jul-2017 14:56

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Tree View itself is an Items Control, but only adds a Selected Item, Selected Value and Selected Value Path properties.

One may wonder why it does not derive from the abstract Selector class (the base class of List Box, Combo Box and Tab Control); the reason is that Selector has a Selected Index property, which is inappropriate for a Tree View, given that its items are not linearly indexed; so Tree View adds its own selection properties.

This makes the XAML look complex and hard to maintain.

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To me, WPF is the inspiration for everything XAML-based that came out after it – mainly Silverlight and Win RT.

With these “View Model” wrapper ideas, we can create any tree view bound to one source collection. facebook Although the Windows Runtime (Win RT) is all the hype these days (in the Microsoft world at least), WPF is still in heavy use in the “desktop apps” space.

Everyone collects utilities, and most folks have a list of a few that they feel are indispensable. Each has a distinct purpose, and I probably touch each at least a few times a week.

Then a nested Data Template is specified for the thread object (again a Stack Panel with an image and the thread’s id).

If we had more levels (some collection a thread might hold), then we would repeat the procedure – turn the Data Template into a Hierarchical Data Template and add a new Data Template for the sub item.Since everything is data bound, we can’t just place static tree nodes somewhere inside the tree once we committed to bindings.