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TreeNodeStyle.HorizontalPadding Property

Gets or sets the amount of space to the left and right of the text in the node.

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

public Unit HorizontalPadding { get; set; }

Property Value

Type: System.Web.UI.WebControls.Unit
The amount of space, in pixels, that is to the left and right of the node's text. The default is 0 pixels.

ExceptionCondition
ArgumentOutOfRangeException

The selected value is of type Percentage or is less than 0.

Use the HorizontalPadding property to control the amount of horizontal space around the text of the node to which the TreeNodeStyle is applied. This space is inserted between the left edge of the text and the border of the text area, as well as between the right edge of the text and the border for the text. To control the vertical spacing, use the VerticalPadding property.

The value of this property is stored in view state.

The following code example demonstrates how to use the HorizontalPadding property to control the horizontal space around the text of a node.

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<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 xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeStyle Example</title>
</head>
<body>  
    <form id="form1" runat="server">

      <h3>TreeNodeStyle Example</h3>

      <!-- Set the styles for the leaf nodes declaratively. -->
      <asp:TreeView id="ItemsTreeView"
        Font-Names= "Arial"
        ForeColor="Blue"
        ParentNodeStyle-ForeColor="Green"
        ParentNodeStyle-HorizontalPadding="5" 
        ParentNodeStyle-VerticalPadding="5"  
        ParentNodeStyle-NodeSpacing="5"
        ParentNodeStyle-ChildNodesPadding="5"
        ExpandDepth="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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

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