TreeListMultiSelection.Set(IEnumerable) Method
Removes all nodes from the collection of selected nodes and then adds a specific group of nodes to the collection.
Namespace: DevExpress.XtraTreeList
Assembly: DevExpress.XtraTreeList.v23.2.dll
NuGet Packages: DevExpress.Win.Navigation, DevExpress.Win.TreeList
Declaration
[Browsable(false)]
[EditorBrowsable(EditorBrowsableState.Never)]
public void Set(
IEnumerable nodes
)Parameters
| Name | Type | Description |
|---|---|---|
| nodes | IEnumerable | A group of nodes to select. |
Remarks
The Set method unselects all nodes and then selects the specified group of nodes.
To set selection for only one node you can use another Set method with a TreeListNode object as a parameter.
The Set method is very useful when it is necessary to select a group of nodes at once. For instance, you can create an object of the ArrayList class, add the desired nodes and then call the Set method with the array as a parameter.
Example
The code below selects all nodes located at the second nesting level (root node children).
treeList1.BehaviorOptions |= BehaviorOptionsFlags.MultiSelect;
ArrayList al = new ArrayList();
for (int i = 0; i < treeList1.Nodes.Count; i++) {
IEnumerator en = treeList1.Nodes[i].Nodes.GetEnumerator();
while(en.MoveNext())
al.Add(en.Current);
}
treeList1.Selection.Set(al);