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MenuItem.Value Property

Gets or sets a non-displayed value used to store any additional data about the menu item, such as data used for handling postback events.

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

public string Value { get; set; }

Property Value

Type: System.String
Supplemental data about the menu item that is not displayed. The default value is an empty string ("").

The Value property is used to supplement the Text property by storing any additional data associated with the menu item. This value is not displayed in the control and is commonly used to store data for handling postback events.

NoteNote:

If the Value property contains null, the get accessor returns the value of the Text property. If the Text property, in turn, contains null, Empty is returned.

The value of the Value property is also used when the value path specified in the ValuePath property is generated. A value path is a delimiter-separated list of menu item values that forms a path from the root menu item to the current menu item. The value path is used to indicate the position of a menu item in a Menu control.

NoteNote:

Menu items at the same menu level must each have a unique value for the Value property; the Menu control cannot distinguish between different menu items at the same level that have the same value.

The value of this property, when set, can be saved automatically to a resource file by using a designer tool. For more information, see LocalizableAttribute and ASP.NET Globalization and Localization.

The following example demonstrates how to display the Value for a menu item and its parent when the user selects a menu item.

<%@ 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 NavigationMenu_MenuItemClick(Object sender, MenuEventArgs e)
  {
    // Display the selected menu item. 
    if (e.Item.Parent != null)
    {
      Message.Text = "You selected " + e.Item.Value + 
        " from " + e.Item.Parent.Value + ".";
    }
    else
    {
      Message.Text = "You selected " + e.Item.Value + ".";
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuItem Value Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>MenuItem Value Example</h3>

      Select an item from the menu:<br/><br/>

      <asp:menu id="NavigationMenu"
        staticdisplaylevels="1"
        staticsubmenuindent="10" 
        orientation="Vertical"
        onmenuitemclick="NavigationMenu_MenuItemClick"  
        runat="server">

        <dynamicselectedstyle backcolor="yellow"/>
        <staticselectedstyle backcolor="yellow"/>

        <items>
          <asp:menuitem text="Home"
            tooltip="Home">
            <asp:menuitem text="Category"
              value="Category 1"
              tooltip="Category 1">
              <asp:menuitem text="Topic"
                value="Topic 1"
                tooltip="Topic 1"/>
              <asp:menuitem text="Topic"
                value="Topic 2"
                tooltip="Topic 2"/>
              <asp:menuitem text="Topic"
                value="Topic 3"
                tooltip="Topic 3"/>
            </asp:menuitem>
            <asp:menuitem text="Category"
              value="Category 2"
              tooltip="Category 2">
              <asp:menuitem text="Topic"
                value="Topic 1"
                tooltip="Topic 1"/>
              <asp:menuitem text="Topic"
                value="Topic 2"
                tooltip="Topic 2"/>
              <asp:menuitem text="Topic"
                value="Topic 3"
                tooltip="Topic 3"/>
            </asp:menuitem>
          </asp:menuitem>
        </items>

      </asp:menu>

      <hr/>

      <asp:label id="Message"
        runat="server"/>

    </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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