#Wpf treeview with checkboxes example how to#
#Wpf treeview with checkboxes example update#
#Wpf treeview with checkboxes example trial#

The final UI contains the tree view which has triple state check boxes within and based on the check status of the leaf nodes will display either and empty box, a checked box or a filled box. WPF Programmer's Reference, Professional Visual Studio 2010, and. The Things Data Context is the class that supports the WPF application.

#Wpf treeview with checkboxes example update#

Since the checkbox is binded to the IsSelected property of your PersonViewModel, you could do something like this if you want to update the selection of the childs. ReturnBool = (nullBool = false) ? uncheckedBool: nullBool Since there is no checkbox by default in a treeview in wpf, editing the template of the items to add a checkbox is the way to go.

UncheckedBool=(y.Count() = ViewModelChildren.Count()) ? true : false

ReturnBool = (nullBool = true) ? nullBool : checkedBool NullBool = (w.Count() = ViewModelChildren.Count()) ? true : false This is why if your applicaiton implements an MVVM approach and the RadTreeView is databound, it's best to define custom 'tri-state' logic in your ViewModels following this tutorial.įor more information, read the topic about CheckBox Support.Public class ThingViewModel : ViewModelBase, IThingViewModelĬheckedBool = (y.Count() = ViewModelChildren.Count()) ? true : false Please keep in mind that the RadTreeView 'tri-state' check boxes logic is desined to work in declaratively populated RadTreeView control. In this mode the item will be checked only if all of its child items are checked too. When this mode is activated the CheckState property of each item is depending on the CheckState property of its child items. If the check boxes need to have 'tri-states' set the IsTriStateMode property of the RadTreeView to True. This state is available only when the RadTreeView IsTriStateMode property is set to True.

Indeterminate - the Item has items that are checked and items that are not checked.

The CheckState property is a ToggleState enumeration and has the following values: If some, but not all, of the children under a parent node are selected, the checkbox for the parent node is shown in the indeterminate state. Selecting or de-selecting a parent node will select or de-select all children under that node. To see the Item check state use the CheckState property of the RadTreeViewItem class. A user can select or de-select an item by using the checkbox clicking the item still causes it to be invoked. These events are available both on the RadTreeView and on the RadTreeViewItem classes. Checkbox in WPF TreeView (SfTreeView) SfTreeView provides support for loading CheckBox in each node, and allows users to check/uncheck the corresponding node. To handle the change of the item check state use the PreviewChecked, Checked, PreviewUnchecked and Unchecked events. Enable this behavior by setting the IsOptionElementsEnabled property of the RadTreeView to True. The WPF TreeView (SfTreeView) control can be added to project by the following ways. RadTreeView provides check boxes displayed next to each item. Create new WPF Project in Visual Studio to display SfTreeView with data objects.

#Wpf treeview with checkboxes example how to#

This tutorial demonstrates how to take advantage of the built-in CheckBox support in the RadTreeViewItems.

#Wpf treeview with checkboxes example trial#

Download free 30-day trial Add Check Boxes (Radio Buttons) Next to Each Item