TreeNodeStyle.ChildNodesPadding Property

Note: This property is new in the .NET Framework version 2.0.

Gets or sets the amount of space between a parent node and a child node to which the TreeNodeStyle class is applied.

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

public Unit ChildNodesPadding { get; set; }
/** @property */
public Unit get_ChildNodesPadding ()

/** @property */
public void set_ChildNodesPadding (Unit value)

public function get ChildNodesPadding () : Unit

public function set ChildNodesPadding (value : Unit)

Property Value

The amount of space, in pixels, that is above and below the child nodes section of a parent node. The default is 0 pixels.

Use the ChildNodesPadding property to control the amount of space above and below the child nodes section of the node to which the TreeNodeStyle class is applied. This spacing is inserted between the parent node and its first child node, as well as between its last child node and the next node.

NoteNote

The space after the last child node is not rendered if there are no additional nodes following the last child node, because this would leave an unnecessary gap at the bottom of the control.

To control the amount of space between child nodes, use the NodeSpacing property.

The value of this property is stored in view state.

The following code example demonstrates how to use the ChildNodesPadding property to specify the space above and below the child nodes section of a parent node.


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

<script runat="server">

  void HorizontalPadding_Changed(Object sender, EventArgs e)
  {

    // Programmatically set the HorizontalPadding property based on the 
    // user's selection.
    ItemsTreeView.ParentNodeStyle.HorizontalPadding = Convert.ToInt32(HorizontalPaddingList.SelectedItem.Text);

  }

  void VerticalPadding_Changed(Object sender, EventArgs e)
  {

    // Programmatically set the VerticalPadding property based on the 
    // user's selection.
    ItemsTreeView.ParentNodeStyle.VerticalPadding = Convert.ToInt32(VerticalPaddingList.SelectedItem.Text);

  }

  void NodeSpacing_Changed(Object sender, EventArgs e)
  {

    // Programmatically set the NodeSpacing property based on the 
    // user's selection.
    ItemsTreeView.ParentNodeStyle.NodeSpacing = Convert.ToInt32(NodeSpacingList.SelectedItem.Text);

  }

  void ChildNodePadding_Changed(Object sender, EventArgs e)
  {

    // Programmatically set the ChildNodesPadding property based on the 
    // user's selection.
    ItemsTreeView.ParentNodeStyle.ChildNodesPadding = Convert.ToInt32(ChildNodesPaddingList.SelectedItem.Text);

  }

</script>

<html>
  <body>  
    <form runat="server">
    
      <h3>TreeNodeStyle Example</h3>
      
      <!-- Set the styles for the leaf nodes declaratively. -->
      <asp:TreeView id="ItemsTreeView"
        Font-Name= "Arial"
        ForeColor="Blue"
        ParentNodeStyle-ForeColor="Green"
        ParentNodeStyle-HorizontalPadding="5" 
        ParentNodeStyle-VerticalPadding="5"  
        ParentNodeStyle-NodeSpacing="5"
        ParentNodeStyle-ChildNodesPadding="5"
        InitialExpandDepth="4"  
        runat="server">
         
        <Nodes>
        
          <asp:TreeNode Text="Table of Contents"
            SelectAction="None">
             
            <asp:TreeNode Text="Chapter One">
            
              <asp:TreeNode Text="Section 1.0">
              
                <asp:TreeNode Text="Topic 1.0.1"/>
                <asp:TreeNode Text="Topic 1.0.2"/>
                <asp:TreeNode Text="Topic 1.0.3"/>
              
              </asp:TreeNode>
              
              <asp:TreeNode Text="Section 1.1">
              
                <asp:TreeNode Text="Topic 1.1.1"/>
                <asp:TreeNode Text="Topic 1.1.2"/>
                <asp:TreeNode Text="Topic 1.1.3"/>
                <asp:TreeNode Text="Topic 1.1.4"/>
              
              </asp:TreeNode>
            
            </asp:TreeNode>
            
          </asp:TreeNode>
        
        </Nodes>
        
      </asp:TreeView>
      
      <hr>
      
      <h5>Select the style settings for the parent nodes.</h5>
      
      <table cellpadding="5">
      
        <tr align="right">
        
          <td>
          
            Horizontal Padding:
          
            <asp:DropDownList id="HorizontalPaddingList"
              AutoPostBack="true"
              OnSelectedIndexChanged="HorizontalPadding_Changed" 
              runat="server">
              
              <asp:ListItem>0</asp:ListItem>
              <asp:ListItem Selected="true">5</asp:ListItem>
              <asp:ListItem>10</asp:ListItem>
              
            </asp:DropDownList> 
          
          </td>
          
          <td>
          
            Vertical Padding:
          
            <asp:DropDownList id="VerticalPaddingList"
              AutoPostBack="true"
              OnSelectedIndexChanged="VerticalPadding_Changed" 
              runat="server">
              
              <asp:ListItem>0</asp:ListItem>
              <asp:ListItem Selected="true">5</asp:ListItem>
              <asp:ListItem>10</asp:ListItem>
              
            </asp:DropDownList> 
          
          </td>
          
        </tr>
        
        <tr align="right">
        
          <td>
          
            Node Spacing:
          
            <asp:DropDownList id="NodeSpacingList"
              AutoPostBack="true"
              OnSelectedIndexChanged="NodeSpacing_Changed"   
              runat="server">
              
              <asp:ListItem>0</asp:ListItem>
              <asp:ListItem Selected="true">5</asp:ListItem>
              <asp:ListItem>10</asp:ListItem>
              
            </asp:DropDownList> 
          
          </td>
          
          <td>
          
            Child Nodes Padding:
          
            <asp:DropDownList id="ChildNodesPaddingList"
              AutoPostBack="true"
              OnSelectedIndexChanged="ChildNodePadding_Changed"  
              runat="server">
              
              <asp:ListItem>0</asp:ListItem>
              <asp:ListItem Selected="true">5</asp:ListItem>
              <asp:ListItem>10</asp:ListItem>
              
            </asp:DropDownList> 
          
          </td>
        
        </tr>
      
      </table>
       
    </form>
  </body>
</html>


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

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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