TreeViewControl.NodeCheckStateChanged Event
Occurs when a node’s check box value is changed.
Namespace: DevExpress.Xpf.Grid
Assembly: DevExpress.Xpf.Grid.v24.1.dll
NuGet Package: DevExpress.Wpf.Grid.Core
Declaration
Event Data
The NodeCheckStateChanged event's data class is DevExpress.Xpf.Grid.TreeList.TreeViewNodeEventArgs.
Remarks
When a node’s check state is changed, the TreeViewControl raises the NodeCheckStateChanged event. Use the TreeListNode.IsChecked property to identify whether a node is checked:
<dxg:TreeViewControl ShowCheckboxes="True"
NodeCheckStateChanged="treeview_NodeCheckStateChanged"
.../>
using DevExpress.Xpf.Grid;
void treeview_NodeCheckStateChanged(object sender, DevExpress.Xpf.Grid.TreeList.TreeViewNodeEventArgs e){
if (e.Node.IsChecked.Value && e.Node.HasChildren){
foreach (TreeListNode node in e.Node.Nodes){
node.IsChecked = false;
}
}
}
Use the following methods to check/uncheck nodes in code:
Method | Description |
---|---|
TreeViewControl.CheckAllNodes | Checks all nodes. |
TreeViewControl.UncheckAllNodes | Unchecks all nodes. |
TreeListNode.IsChecked | Checks/unchecks the node. |
See Also