Gets or sets a value indicating which node types will display a check box in the System.Web.UI.WebControls.TreeView control.
Syntax
public TreeNodeTypes ShowCheckBoxes { set; get; }
Value
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Remarks
To provide multi-node selection support in the System.Web.UI.WebControls.TreeView control, you can display check boxes next to the image for a node. Use the TreeView.ShowCheckBoxes property to specify which node types will display a check box. For example, if this property is set to TreeNodeType.Parent, check boxes are displayed for each parent node in the tree. The following table lists the valid values for this property.
| TreeNodeType.All |
Check boxes are displayed for all nodes. |
| TreeNodeType.Leaf |
Check boxes are displayed for all leaf nodes. |
| TreeNodeType.None |
Check boxes are not displayed. |
| TreeNodeType.Parent |
Check boxes are displayed for all parent nodes. |
| TreeNodeType.Root |
Check boxes are displayed for all root nodes. |
The enumeration type that is used for the TreeView.ShowCheckBoxes property is a flag enumeration, which allows you to combine values through bitwise operations. For example, to display check boxes for the parent and leaf nodes, use the bitwise OR operator to combine the TreeNodeType.Parent and TreeNodeType.Leaf values.
To determine which nodes have their check box selected, iterate through the nodes of the TreeView.CheckedNodes collection.
You can override the TreeView.ShowCheckBoxes setting by setting the TreeNode.ShowCheckBox property for each node.
If you need to provide only single-selection support, consider using the TreeView.SelectedNode property.
The value of this property is stored in view state.
Requirements
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0