TreeViewNodeCancelEventArgs Class
Provides data for the BeforeCollapse and BeforeExpand events.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v24.2.dll
NuGet Package: DevExpress.Blazor
Declaration
public class TreeViewNodeCancelEventArgs :
TreeViewNodeEventArgs
Remarks
The following code snippet prohibits root-level nodes from collapsing.
<DxTreeView BeforeCollapse="@BeforeCollapse">
...
</DxTreeView>
@code {
void BeforeCollapse(TreeViewNodeCancelEventArgs e) {
if (e.NodeInfo.Level == 0) e.Cancel = true;
}
}
Inheritance
Object
EventArgs
TreeViewNodeEventArgs
TreeViewNodeCancelEventArgs
See Also