In the code-behind, we simply create two Family instances, fill each of them with a set of members, and then add each of the families to a list, which is In both templates, we use an image representing either a family or a family member, and then we show some interesting data about it as well, like theĪmount of family members or the person's age.
Had wanted each FamilyMember to keep a collection of their children and perhaps their children's children, then we would have used a hierarchical template The template defined for the FamilyMember type is a regular DataTemplate, since this type doesn't have any child members. The template defined for the Family type is a hierarchical template, using the Members Users can get the SelectedItem using SelectedTreeItem property in order to enable two way binding between SelectedItem property in View and SelectedTreeItem property of TreeViewAdv, without modifying the actual SelectedItem property of TreeViewAdv. MenuItem root = new MenuItem() Īs mentioned, the two templates are declared as a part of the TreeView resources, allowing the TreeView to select the appropriate template based on theĭata type that it's about to show. When you are dealing with a potentially infinite number of sub-levels (for example because items can reference each other and would cause an infinite loop during recursion), Id recommend populating the items when they are first expanded. Public partial class TreeViewDataBindingSample : Window Namespace WpfTutorialSamples.TreeView_control In the following example, I'll show you just how easy it is to get started with the HierarchicalDataTemplate: Which property to use as a source for child items of the node. Instead, we use the HierarchicalDataTemplate, which allows us to template both the tree node itself, while controlling The WPF TreeView supports data binding, like pretty much all other WPF controls does, but because the TreeView is hierarchical in nature, a normalĭataTemplate often won't suffice. Prism.Mvvm is used here, or INotifyPropert圜hanged in the c# System.ComponentModel library can be used instead.The TreeView control: TreeView, data binding and multiple templates MVVM binds attributes, because the amount of data is a bit large, here I set up a thread to generate the tree structureĪfter searching on the Internet for a long time and researching for a long time, I finally came up with it. I have viewmodel-objects handling the individual treeitems with regards to display, lazy load etc.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. Try one and come back if you have an issue. There are several examples of how to populate a tree view from a collection of file paths such as this or this other example. This article is inspired from the works of Josh Smith, mainly his implementation of the TreeView. Then you can populate your tree with the schema info that you get back from the Connection class (get Schema) Adolfo Perez.