ASPxMenuBase.ShowPopOutImages Property

Gets or sets a value specifying whether pop-out images that indicate that a menu item has a submenu are displayed.

Assembly: DevExpress.Web.v24.1.dll

Declaration

C#
VB.NET

[DefaultValue(DefaultBoolean.Default)]
public DefaultBoolean ShowPopOutImages { get; set; }

<DefaultValue(DefaultBoolean.Default)>
Public Property ShowPopOutImages As DefaultBoolean

Property Value

Type	Default	Description
DefaultBoolean	Default	One of the enumeration values.

Available values:

Name	Description	Return Value
True	The value is true.	`0`
False	The value is false.	`1`
Default	The value is specified by a global option or a higher-level object.	`2`

Remarks

When a menu item contains a submenu, a specific pop-out image can be displayed to indicate that the user can expand the menu by positioning the mouse pointer over the menu item. Use the ShowPopOutImages property to control the availability of pop-out images within a menu control.

Custom pop-out images can be specified for the Orientation.Horizontal and Orientation.Vertical orientation states of a menu control via the ASPxMenuBase.HorizontalPopOutImage and ASPxMenuBase.VerticalPopOutImage properties respectively.

Example

This sample demonstrates how to disable sending a postback and generating the server ItemClick event for the menu items that contain sub-items. In this sample, the desired behavior is implemented by setting the e.processOnServer parameter to false within the handler of the menu client ItemClick event.

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Assembly="DevExpress.Web.v13.1" Namespace="DevExpress.Web.ASPxMenu" TagPrefix="dxm" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <p>
            Try clicking menu items.</p>
        <p>
            Note: Clicking a parent item (an item that has sub-items) does not fire the menu
            server-side ItemClick event.</p>
        <dxm:ASPxMenu ID="ASPxMenu1" runat="server" BorderBetweenItemAndSubMenu="HideAll"
            OnItemClick="ASPxMenu1_ItemClick" SelectParentItem="True" ShowPopOutImages="True">
            <Items>
                <dxm:MenuItem Text="Root 1">
                    <Items>
                        <dxm:MenuItem Text="Sub Item">
                            <Items>
                                <dxm:MenuItem Text="Item 1-1">
                                </dxm:MenuItem>
                                <dxm:MenuItem Text="Item 1-2">
                                </dxm:MenuItem>
                            </Items>
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 1-3">
                        </dxm:MenuItem>
                    </Items>
                </dxm:MenuItem>
                <dxm:MenuItem Text="Root 2">
                    <Items>
                        <dxm:MenuItem Text="Item 2-1">
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 2-2">
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 2-3">
                        </dxm:MenuItem>
                    </Items>
                </dxm:MenuItem>
            </Items>
            <ClientSideEvents ItemClick="function(s, e) {
    e.processOnServer = e.item.GetItemCount() == 0; // Prevent generating a postback for parent menu items
           }" />
        </dxm:ASPxMenu>
        <br />
        <br />
        <br />
        <br />
        <br />
        <asp:Label ID="Label1" runat="server"></asp:Label>
    </div>
    </form>
</body>
</html>

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e) {

    }
    protected void ASPxMenu1_ItemClick(object source, DevExpress.Web.ASPxMenu.MenuItemEventArgs e) {
        Label1.Text = "The clicked item: " + e.Item.Text;
    }
}

<%@ Page Language="vb" AutoEventWireup="true"  CodeFile="Default.aspx.vb" Inherits="_Default" %>

<%@ Register Assembly="DevExpress.Web.v13.1" Namespace="DevExpress.Web.ASPxMenu" TagPrefix="dxm" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <p>
            Try clicking menu items.</p>
        <p>
            Note: Clicking a parent item (an item that has sub-items) does not fire the menu
            server-side ItemClick event.</p>
        <dxm:ASPxMenu ID="ASPxMenu1" runat="server" BorderBetweenItemAndSubMenu="HideAll"
            OnItemClick="ASPxMenu1_ItemClick" SelectParentItem="True" ShowPopOutImages="True">
            <Items>
                <dxm:MenuItem Text="Root 1">
                    <Items>
                        <dxm:MenuItem Text="Sub Item">
                            <Items>
                                <dxm:MenuItem Text="Item 1-1">
                                </dxm:MenuItem>
                                <dxm:MenuItem Text="Item 1-2">
                                </dxm:MenuItem>
                            </Items>
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 1-3">
                        </dxm:MenuItem>
                    </Items>
                </dxm:MenuItem>
                <dxm:MenuItem Text="Root 2">
                    <Items>
                        <dxm:MenuItem Text="Item 2-1">
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 2-2">
                        </dxm:MenuItem>
                        <dxm:MenuItem Text="Item 2-3">
                        </dxm:MenuItem>
                    </Items>
                </dxm:MenuItem>
            </Items>
            <ClientSideEvents ItemClick="function(s, e) {
    e.processOnServer = e.item.GetItemCount() == 0; // Prevent generating a postback for parent menu items
           }" />
        </dxm:ASPxMenu>
        <br />
        <br />
        <br />
        <br />
        <br />
        <asp:Label ID="Label1" runat="server"></asp:Label>
    </div>
    </form>
</body>
</html>

Imports Microsoft.VisualBasic
Imports System
Imports System.Data
Imports System.Configuration
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls

Partial Public Class _Default
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    End Sub
    Protected Sub ASPxMenu1_ItemClick(ByVal source As Object, ByVal e As DevExpress.Web.ASPxMenu.MenuItemEventArgs)
        Label1.Text = "Clicked item: " & e.Item.Text
    End Sub
End Class

Controls

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Controls

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ASPxMenuBase.ShowPopOutImages Property

Declaration

Property Value

Remarks

Example