ASPxNavBar.ExpandGroupAction Property
Gets or sets a value that specifies which action forces a group to be expanded/collapsed within a nav bar control.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v18.2.dll
Declaration
Property Value
Type | Default | Description |
---|---|---|
ExpandGroupAction | **Click** | One of the ExpandGroupAction enumeration values. |
Available values:
Name | Description |
---|---|
Click | Specifies that a navbar group can be expanded/collapsed by a mouse click. |
MouseOver | Specifies that a navbar group can be expanded/collapsed via mouse hover. |
Remarks
Use the ExpandGroupAction property to specify the precise client mouse action which will expand/collapse a group within a nav bar control - mouse click (the ExpandGroupAction.Click value) or hovering (the ExpandGroupAction.MouseOver value).
Example
This example demonstrates how to automatically expand a NavBarGroup when the mouse hovers over a group header. This functionality is turned on by setting the ExpandGroupAction property to MouseOver, and it may be extremely useful for the NavBar with AutoCollapse set to True and when all groups have the same height.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-expand-aspxnavbar-groups-when-the-mouse-moves-over-group-headers-e1565
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="DevExpress.Web.v13.1, Version=13.1.12.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web.ASPxEditors"
TagPrefix="dxe" %>
<%@ Register Assembly="DevExpress.Web.v13.1, Version=13.1.12.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web.ASPxNavBar"
TagPrefix="dxnb" %>
<!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>
<asp:XmlDataSource ID="XmlDataSource1" runat="server" DataFile="~/App_Data/Charts.xml" XPath="//Chart" />
<dxnb:ASPxNavBar Width="600px" ClientInstanceName="ASPxNavBarClientControl" ID="ASPxNavBar1" runat="server" DataSourceID="XmlDataSource1" EnableAnimation="True" OnGroupDataBound="ASPxNavBar1_GroupDataBound" AutoCollapse="True" ExpandGroupAction="MouseOver" Font-Bold="False" Font-Names="Tahoma" Font-Size="8pt" GroupSpacing="1px">
<GroupContentTemplate>
<table border="0" cellpadding="0" cellspacing="0"><tr>
<td valign="top"><dxe:ASPxImage ID="Image1" runat="server" ImageUrl='<%# Container.EvalDataItem("BigImageUrl") %>' AlternateText='<%# Container.EvalDataItem("View") %>' /></td>
<td valign="top" style="padding-left: 10px; color: #9D9D9D;"><div class="Hint"><dxe:ASPxLabel ID="Label2" runat="server" Text='<%# Container.EvalDataItem("Description") %>' /></div></td>
</tr></table>
</GroupContentTemplate>
<GroupContentStyle>
<Paddings Padding="7px" />
<Border BorderWidth="0px" />
</GroupContentStyle>
<GroupHeaderStyle BackColor="#888888" Font-Bold="True" Font-Underline="False" ForeColor="White">
<Paddings Padding="3px" PaddingLeft="7px" />
<Border BorderWidth="0px" />
</GroupHeaderStyle>
<Paddings Padding="1px" />
<Border BorderColor="#A8A8A8" BorderStyle="Solid" BorderWidth="1px" />
</dxnb:ASPxNavBar>
</div>
</form>
</body>
</html>