MenuEventArgs MenuEventArgs MenuEventArgs MenuEventArgs Class

Definition

Provides data for the MenuItemClick and MenuItemDataBound events of a Menu control. This class cannot be inherited.

public ref class MenuEventArgs sealed : System::Web::UI::WebControls::CommandEventArgs
public sealed class MenuEventArgs : System.Web.UI.WebControls.CommandEventArgs
type MenuEventArgs = class
    inherit CommandEventArgs
Public NotInheritable Class MenuEventArgs
Inherits CommandEventArgs
Inheritance

Examples

The following code example demonstrates how to use the MenuEventArgs object passed to the event handler for the MenuItemDataBound event to modify the properties of a menu item before it is displayed in a Menu control. The ImageUrl property of the Home menu item is set to display an image in that menu item only. For this example to work correctly, you must copy the sample site map data below to a file named Web.sitemap.


<%@ 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 MenuItemDataBound_NavigationMenu(Object sender, MenuEventArgs e)
  {
    // Display an image for the Home menu item only by
    // setting its ImageUrl property.
    if (e.Item.Text == "Home")
    {
      // Use an @-quoted string to bypass the escape sequence
      // processing.
      e.Item.ImageUrl = @"Images\Home.jpg";
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuEventArgs Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>MenuEventArgs Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        datasourceid="menusource" 
        onmenuitemdatabound="MenuItemDataBound_NavigationMenu" 
        runat="server">

      </asp:menu>
      
      <asp:SiteMapDataSource id="MenuSource"
        Runat="server"/>

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


<%@ Page Language="VB" %>

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

  Sub MenuItemDataBound_NavigationMenu(ByVal sender As Object, ByVal e As MenuEventArgs)
  
    ' Display an image for the Home menu item only by
    ' setting its ImageUrl property.
    If e.Item.Text = "Home" Then
    
      e.Item.ImageUrl = "Images\Home.jpg"
      
    End If
      
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>MenuEventArgs Example</title>
</head>
<body>
    <form id="Form1" runat="server">
    
      <h3>MenuEventArgs Example</h3>
    
      <asp:menu id="NavigationMenu"
        staticdisplaylevels="2"
        staticsubmenuindent="10" 
        orientation="Vertical"
        datasourceid="menusource" 
        onmenuitemdatabound="MenuItemDataBound_NavigationMenu" 
        runat="server">

      </asp:menu>
      
      <asp:SiteMapDataSource id="MenuSource"
        Runat="server"/>

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

The following is sample site map data for the previous example.

<siteMap>

<siteMapNode url="~\Home.aspx"

title="Home"

description="Home">

<siteMapNode url="~\Music.aspx"

title="Music"

description="Music">

<siteMapNode url="~\Classical.aspx"

title="Classical"

description="Classical"/>

<siteMapNode url="~\Rock.aspx"

title="Rock"

description="Rock"/>

<siteMapNode url="~\Jazz.aspx"

title="Jazz"

description="Jazz"/>

</siteMapNode>

<siteMapNode url="~\Movies.aspx"

title="Movies"

description="Movies">

<siteMapNode url="~\Action.aspx"

title="Action"

description="Action"/>

<siteMapNode url="~\Drama.aspx"

title="Drama"

description="Drama"/>

<siteMapNode url="~\Musical.aspx"

title="Musical"

description="Musical"/>

</siteMapNode>

</siteMapNode>

</siteMap>

Remarks

The MenuEventArgs class is used to store the event data passed to an event handler for the events in the following table.

Event Description
MenuItemClick Occurs when a menu item is clicked. This event is commonly used to synchronize a Menu control with another control on the page.
MenuItemDataBound Occurs when a menu item is bound to data. This event is commonly used to modify a menu item before it is rendered in a Menu control.

Depending on the event raised, you can access the menu item clicked by the user or the menu item being bound to data by using the Item property.

For a list of initial property values for an instance of the MenuEventArgs class, see the MenuEventArgs constructor.

Constructors

MenuEventArgs(MenuItem) MenuEventArgs(MenuItem) MenuEventArgs(MenuItem) MenuEventArgs(MenuItem)

Initializes a new instance of the MenuEventArgs class using the specified menu item.

MenuEventArgs(MenuItem, Object, CommandEventArgs) MenuEventArgs(MenuItem, Object, CommandEventArgs) MenuEventArgs(MenuItem, Object, CommandEventArgs) MenuEventArgs(MenuItem, Object, CommandEventArgs)

Initializes a new instance of the MenuEventArgs class using the specified menu item, command source, and event arguments.

Properties

CommandArgument CommandArgument CommandArgument CommandArgument

Gets the argument for the command.

(Inherited from CommandEventArgs)
CommandName CommandName CommandName CommandName

Gets the name of the command.

(Inherited from CommandEventArgs)
CommandSource CommandSource CommandSource CommandSource

Gets the Object that raised the event.

Item Item Item Item

Gets the menu item associated with the event raised.

Methods

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See Also