Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

TreeView.RootNodeStyle Property

Gets a reference to the TreeNodeStyle object that allows you to set the appearance of the root node in the TreeView control.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public TreeNodeStyle RootNodeStyle { get; }
/** @property */
public TreeNodeStyle get_RootNodeStyle ()

public function get RootNodeStyle () : TreeNodeStyle

Not applicable.

Property Value

A reference to the TreeNodeStyle that represents the style of the root node in the TreeView.

Use the RootNodeStyle property to control the appearance of the root node in the TreeView control. This property is read-only; however, you can set the properties of the TreeNodeStyle object it returns. The properties can be set declaratively in the form Property-Subproperty, where Subproperty is a property of the TreeNodeStyle object (for example, RootNodeStyle-ForeColor). The properties can also be set programmatically in the form Property.Subproperty (for example, RootNodeStyle.ForeColor). Common settings usually include a custom background color, foreground color, font properties, and node spacing. Style properties are applied in the following order of precedence:

  1. NodeStyle.

  2. RootNodeStyle, ParentNodeStyle, or LeafNodeStyle, depending on the node type. If the LevelStyles collection is defined, it is applied at this time, overriding the other node style properties.

  3. SelectedNodeStyle

  4. HoverNodeStyle.

If you need to generate table of contents-style navigation menus where nodes at a certain level should have the same appearance, regardless of whether they have child nodes, you might consider using the LevelStyles property instead of setting the individual style properties.

The following code example demonstrates how to use the RootNodeStyle property to control the appearance of the root node in the TreeView control.


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

  <head runat="server">
    <title>TreeView RootNodeStyle Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeView RootNodeStyle Example</h3>
      
      <!-- Declaratively set the RootNodeStyle settings. --> 
      <asp:TreeView id="LinksTreeView"
        RootNodeStyle-ForeColor="Green"
        RootNodeStyle-VerticalPadding="0"  
        runat="server">
         
        <Nodes>
        
          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Target="Content" 
            Expanded="True">
             
            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page1"
              Target="Content">
               
              <asp:TreeNode Value="Section 1" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"
                Target="Content"/>
                 
            </asp:TreeNode>              
            
            <asp:TreeNode Value="Page 2" 
              NavigateUrl="Page2.aspx"
              Text="Page 2"
              Target="Content">
               
            </asp:TreeNode> 
            
          </asp:TreeNode>
        
        </Nodes>
        
      </asp:TreeView>

    </form>
  </body>
</html>


Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions

ADD
Show:
© 2015 Microsoft