Wpf treeview hierarchicaldatatemplate example
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A TreeView consists of a hierarchy of TreeViewItem controls, which can contain simple text strings and also more complex content, such as Button controls or a StackPanel with embedded content. If null is returned, TreeView searches for appropriate hierarchical data template for the DataType. This example shows how to create simple or complex TreeView controls.
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Return mi.Invoke(container, new object ) as DataTemplate īasically what it does is to find appropriate data template and return it back to TreeView. If (MainWindow.ViewMode = ViewMode.ByArea) MethodInfo mi = container.GetType().GetMethod("FindResource") as MethodInfo Here is the code I am using to create the tree view. When you right click any of the child nodes (not parents), I would like a simple context menu to display. The following code produces a TreeView as seen below. Public override DataTemplate SelectTemplate(object item, DependencyObject container) Create WPF context menu for a TreeView using HierarchicalDataTemplates. Public class MyTemplateSelector : DataTemplateSelector If there is no x:Key attribute for a DataTemplate, the framework will use this DataTemplate when it comes across the type and tries to visually display it (you can read more about implicit DataTemplates here). In a code behind file, the following class is defined. If your ItemsSource is made up of different Types, then you can simply create HierarchicalDataTemplates and not assign an x:Key. Items.CurrentItem is part of internal tree colection. This is not selected item it is current item in tree control that use HierarchicalDataTemplate. Since TreeView only selects one unique data template at a time for any given type, the sample above is using custom data template selector in ItemTemplateSelector. HierarchicalDataTemplate is treeview template Tag make real consumation of current item. This example displays the Region's RegionName property in a TextBlock. For view, Area is parent and Age is child node type and vice versa for view. If you look at below example, you can see that each category view has different data templates. template that the TreeView should use to display the data at this node. So, you need to apply this style on your listbox or any control where this Hierarchichal data template gets applied. ItemsControls that dont specifically show hierarchical data wont use that template. I know I can integrate windows forms and use a different control in order to make it work but it will be nice if I could do the same thing with a wpf treeview control. I cannot seem to find such example for WPF. A TreeView can populate its tree by binding to a data source and using HierarchicalDataTemplate objects. There are several examples of how to populate a tree view from a collection of file paths such as this or this other example.
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In a XAML, we can add different hierarchical data templates per each category. Since you applied the style to the ItemContainer and as the name suggests it will be applied to the items it contains which in this case will be the child nodes of folder. HierarchicalDataTemplates are used by TreeViews.