Selectable Property

MenuItem.Selectable Property

 

Gets or sets a value that indicates whether the MenuItem object can be selected, or is "clickable."

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

[BrowsableAttribute(true)]
public bool Selectable { get; set; }

Property Value

Type: System.Boolean

true if the menu item can be selected; otherwise, false.

When this property is set to false on a menu item, no action occurs when the menu item is clicked (selected). The pop-out image indicating child menu items for the menu item, if one exists, is still shown and available.

If you do not want any child menu items to appear for a menu item, set the Enabled property to false.

Selectable applies only to menu items that can be selected, in the sense that clicking a menu item posts back and sets that item in the selected state. Note that a menu item that cannot be selected is still formatted as a link. This is for accessibility reasons, so that the menu item can cause an action to occur. Also, a menu item, even if it cannot be selected, may have child menu items that can be selected or that need to be displayed.

If you want to prevent a user from clicking a menu item, do one of the following:

  • Do not set NavigateUrl and set Selectable to false.

  • Set the menu item's Enabled property to false.

The following example demonstrates how a menu item with the Selectable property set to false appears and functions in a menu.


<%@ Page Language="VB" %>

<!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>Menu Selectable and Enabled properties Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>Menu Selectable and Enabled properties Example</h3>
    Note that Home, set to Selectable=false, is unselectable, but still shows all child items.<br />
    Movies, set to Enabled=false, is unselectable, is greyed out, and does not show child items. <br />
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="1"
        staticsubmenuindent="10" 
        orientation="Vertical"
        target="_blank"  
        runat="server">

        <dynamicmenustyle backcolor="LightSkyBlue"
          forecolor="Black"
          borderstyle="Solid"
          borderwidth="1"
          bordercolor="Black" />

        <items>
          <asp:menuitem navigateurl="Home.aspx" 
            text="Non-Selectable"
            tooltip="Non-Selectable"
              Selectable="false">
            <asp:menuitem navigateurl="Music.aspx"
              text="Music"
              tooltip="Music">
              <asp:menuitem navigateurl="Classical.aspx" 
                text="Classical"
                tooltip="Classical"/>
              <asp:menuitem navigateurl="Rock.aspx"
                text="Rock"
                tooltip="Rock"/>
              <asp:menuitem navigateurl="Jazz.aspx"
                text="Jazz"
                tooltip="Jazz"/>
            </asp:menuitem>
            <asp:menuitem navigateurl="Movies.aspx"
              text="Disabled"
              tooltip="Disabled"
              Enabled="false">
              <asp:menuitem navigateurl="Action.aspx"
                text="Action"
                tooltip="Action"/>

              <asp:menuitem navigateurl="Drama.aspx"
                text="Drama"
                tooltip="Drama"/>
              <asp:menuitem navigateurl="Musical.aspx"
                text="Musical"
                tooltip="Musical"/>
            </asp:menuitem>
          </asp:menuitem>
        </items>

      </asp:menu>

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

.NET Framework
Available since 2.0
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