这个新的方式也很不错
我将sample code留下来，以后也会记得，嘿嘿 原文: http://www.codeproject.com/KB/webforms/AspMenuParentHighlighting.aspx
使用js来实现的，恩，页面会有太多的js，如果菜单很多，那么应该也会很慢的应该，性能考量不见的比上面那个CSSAdapters的好，CSSAdapter配置确实要麻烦很多不过
html
1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
2
3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml">
6<head id="Head1" runat="server">
7 <title>Untitled Page</title>
8 <script type="text/javascript">
9
function HoverParents(id, parentSnake)
10
{
11 Menu_HoverDynamic(document.getElementById(id));
12 var parents = parentSnake.toString().split(',');
13 for(i = 0;i < parents.length;i++)
14 {
15 if(parents[i] != '')
16 {
17 Menu_HoverDynamic(document.getElementById(parents[i]));
18
}
19 }
20 }
21
22 function UnhoverParents(id, parentSnake)
23 {
24 Menu_Unhover(document.getElementById(id));
25
26 var parents = parentSnake.toString().split(',');
27 for(i = 0;i < parents.length;i++)
28 {
29 if(parents[i] != '')
30 {
31 Menu_Unhover(document.getElementById(parents[i]));
32 }
33 }
34 }
35
</script>
36</head>
37<body>
38 <form id="form1" runat="server">
39 <div>
40 <asp:ScriptManager ID="sm" runat="server" />
41 <asp:UpdatePanel ID="up" runat="server">
42 <ContentTemplate>
43 <asp:Menu ID="mainMenu" runat="server"
44 StaticMenuItemStyle-CssClass="MenuItem"
45 StaticHoverStyle-CssClass="MenuItemHover"
46 StaticSelectedStyle-CssClass="MenuItemSelected"
47 StaticPopOutImageUrl="~/Images/PopOut.png"
48 DynamicPopOutImageUrl="~/Images/PopOut.png"
49 DynamicMenuItemStyle-CssClass="DynamicMenuItem"
50 DynamicHoverStyle-CssClass="MenuItemHover"
51 StaticSubMenuIndent="0"
52 StaticDisplayLevels="2"
53 >
54 <Items>
55 <asp:MenuItem Text="Music">
56 <asp:MenuItem Text="Classical" />
57 <asp:MenuItem Text="Rock">
58 <asp:MenuItem Text="Electric" />
59 <asp:MenuItem Text="Acoustical" />
60 <asp:MenuItem Text="Classical4" />
61 <asp:MenuItem Text="Rock4">
62 <asp:MenuItem Text="Electric4" />
63 <asp:MenuItem Text="Acoustical4" />
64 </asp:MenuItem>
65 </asp:MenuItem>
66 <asp:MenuItem Text="Classical2" />
67 <asp:MenuItem Text="Rock2">
68 <asp:MenuItem Text="Electric2">
69 <asp:MenuItem Text="Classical3" />
70 <asp:MenuItem Text="Rock3">
71 <asp:MenuItem Text="Electric3" />
72 <asp:MenuItem Text="Acoustical3" />
73 </asp:MenuItem>
74 </asp:MenuItem>
75 <asp:MenuItem Text="Acoustical5" />
76 </asp:MenuItem>
77 </asp:MenuItem>
78 </Items>
79 </asp:Menu>
80 <asp:Label id="MessageLabel" runat="server" />
81 </ContentTemplate>
82 </asp:UpdatePanel>
83
84 </div>
85 </form>
86</body>
87</html>
88
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
2
3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml">6
<head id="Head1" runat="server">7
<title>Untitled Page</title>8
<script type="text/javascript">9
function HoverParents(id, parentSnake)10
{
11
Menu_HoverDynamic(document.getElementById(id));12
var parents = parentSnake.toString().split(',');13
for(i = 0;i < parents.length;i++)14
{15
if(parents[i] != '')16
{17
Menu_HoverDynamic(document.getElementById(parents[i]));18
}19
}20
}21
22
function UnhoverParents(id, parentSnake)23
{ 24
Menu_Unhover(document.getElementById(id));25
26
var parents = parentSnake.toString().split(',');27
for(i = 0;i < parents.length;i++)28
{29
if(parents[i] != '')30
{31
Menu_Unhover(document.getElementById(parents[i]));32
}33
}34
}35
</script> 36
</head>37
<body>38
<form id="form1" runat="server">39
<div>40
<asp:ScriptManager ID="sm" runat="server" />41
<asp:UpdatePanel ID="up" runat="server">42
<ContentTemplate>43
<asp:Menu ID="mainMenu" runat="server"44
StaticMenuItemStyle-CssClass="MenuItem"45
StaticHoverStyle-CssClass="MenuItemHover"46
StaticSelectedStyle-CssClass="MenuItemSelected"47
StaticPopOutImageUrl="~/Images/PopOut.png"48
DynamicPopOutImageUrl="~/Images/PopOut.png"49
DynamicMenuItemStyle-CssClass="DynamicMenuItem"50
DynamicHoverStyle-CssClass="MenuItemHover"51
StaticSubMenuIndent="0"52
StaticDisplayLevels="2"53
>54
<Items>55
<asp:MenuItem Text="Music">56
<asp:MenuItem Text="Classical" />57
<asp:MenuItem Text="Rock">58
<asp:MenuItem Text="Electric" />59
<asp:MenuItem Text="Acoustical" />60
<asp:MenuItem Text="Classical4" />61
<asp:MenuItem Text="Rock4">62
<asp:MenuItem Text="Electric4" />63
<asp:MenuItem Text="Acoustical4" />64
</asp:MenuItem> 65
</asp:MenuItem>66
<asp:MenuItem Text="Classical2" />67
<asp:MenuItem Text="Rock2">68
<asp:MenuItem Text="Electric2">69
<asp:MenuItem Text="Classical3" />70
<asp:MenuItem Text="Rock3">71
<asp:MenuItem Text="Electric3" />72
<asp:MenuItem Text="Acoustical3" />73
</asp:MenuItem> 74
</asp:MenuItem>75
<asp:MenuItem Text="Acoustical5" />76
</asp:MenuItem> 77
</asp:MenuItem>78
</Items>79
</asp:Menu>80
<asp:Label id="MessageLabel" runat="server" />81
</ContentTemplate>82
</asp:UpdatePanel>83
84
</div>85
</form>86
</body>87
</html>88
code behind
1using System;
2using System.Collections.Generic;
3using System.Configuration;
4using System.Data;
5using System.Linq;
6using System.Web;
7using System.Web.Security;
8using System.Web.UI;
9using System.Web.UI.HtmlControls;
10using System.Web.UI.WebControls;
11using System.Web.UI.WebControls.WebParts;
12using System.Xml.Linq;
13
14public partial class _Default : System.Web.UI.Page
15{
16 protected void Page_Load(object sender, EventArgs e)
17 {
18 mainMenu.MenuItemClick += new MenuEventHandler(mainMenu_MenuItemClick);
19 string script = String.Empty;
20
21 List<MenuItem> list = new List<MenuItem>();
22 list.Add(mainMenu.Items[0]);
23 FindMenuItems(mainMenu.Items[0], list);
24
25 foreach (MenuItem mi in list)
26 {
27 List<MenuItem> parents = new List<MenuItem>();
28 FindParents(mi, parents);
29
30 string parentSnake = String.Empty;
31 foreach (MenuItem parent in parents)
32 {
33 parentSnake += "mainMenun" + list.IndexOf(parent).ToString() + ",";
34 }
35
36 parentSnake.TrimEnd(',');
37
38 script += "document.getElementById('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "').onmouseover = function(){HoverParents('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "', '" + parentSnake + "')};";
39 script += "document.getElementById('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "').onmouseout = function(){UnhoverParents('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "', '" + parentSnake + "')};";
40 }
41
42 ScriptManager.RegisterStartupScript(this, typeof(string), "MenuHoverUnhover", script, true);
43 }
44
45 void FindMenuItems(MenuItem mi, List<MenuItem> list)
46 {
47 foreach (MenuItem child in mi.ChildItems)
48 {
49 list.Add(child);
50 }
51
52 foreach (MenuItem child in mi.ChildItems)
53 {
54 FindMenuItems(child, list);
55 }
56 }
57
58 void FindParents(MenuItem mi, List<MenuItem> list)
59 {
60 if (mi.Parent != null)
61 {
62 if (mi.Parent != mainMenu.Items[0])
63 {
64 list.Add(mi.Parent);
65 FindParents(mi.Parent, list);
66 }
67 }
68 }
69
70 void mainMenu_MenuItemClick(object sender, MenuEventArgs e)
71 {
72 MessageLabel.Text = e.Item.Text;
73 }
74}
75
using System;2
using System.Collections.Generic;3
using System.Configuration;4
using System.Data;5
using System.Linq;6
using System.Web;7
using System.Web.Security;8
using System.Web.UI;9
using System.Web.UI.HtmlControls;10
using System.Web.UI.WebControls;11
using System.Web.UI.WebControls.WebParts;12
using System.Xml.Linq;13
14
public partial class _Default : System.Web.UI.Page 15
{16
protected void Page_Load(object sender, EventArgs e)17
{18
mainMenu.MenuItemClick += new MenuEventHandler(mainMenu_MenuItemClick);19
string script = String.Empty;20
21
List<MenuItem> list = new List<MenuItem>();22
list.Add(mainMenu.Items[0]);23
FindMenuItems(mainMenu.Items[0], list);24
25
foreach (MenuItem mi in list)26
{27
List<MenuItem> parents = new List<MenuItem>();28
FindParents(mi, parents);29
30
string parentSnake = String.Empty;31
foreach (MenuItem parent in parents)32
{33
parentSnake += "mainMenun" + list.IndexOf(parent).ToString() + ",";34
}35
36
parentSnake.TrimEnd(',');37
38
script += "document.getElementById('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "').onmouseover = function(){HoverParents('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "', '" + parentSnake + "')};";39
script += "document.getElementById('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "').onmouseout = function(){UnhoverParents('" + mainMenu.ClientID + "n" + list.IndexOf(mi).ToString() + "', '" + parentSnake + "')};";40
}41
42
ScriptManager.RegisterStartupScript(this, typeof(string), "MenuHoverUnhover", script, true);43
}44
45
void FindMenuItems(MenuItem mi, List<MenuItem> list)46
{47
foreach (MenuItem child in mi.ChildItems)48
{49
list.Add(child);50
}51
52
foreach (MenuItem child in mi.ChildItems)53
{54
FindMenuItems(child, list);55
}56
}57
58
void FindParents(MenuItem mi, List<MenuItem> list)59
{60
if (mi.Parent != null)61
{62
if (mi.Parent != mainMenu.Items[0])63
{64
list.Add(mi.Parent);65
FindParents(mi.Parent, list);66
}67
}68
}69
70
void mainMenu_MenuItemClick(object sender, MenuEventArgs e)71
{72
MessageLabel.Text = e.Item.Text;73
}74
}75