以前曾看到过有人写出这样的菜单,可是自己却没有源代码,放假的时候,闲着没事,就自己写了一个,并把它制成了服务器控件。这里我用到了六个文件,当然你可以把某些文件合并,以减少耦合,我的用意是将各种不同的代码分离。在写的过程中,遇到了很多问题,不知道大家又没有碰到过,希望各位注意。好了,下面切入正题! 1、服务器控件制作:基于Xml的下拉菜单 xml文件为: <?xml version="1.0" encoding="utf-8" ?> <!-- 服务端控件 - 数据文件 基于Xml的下拉菜单 作者:Terry Li(Icefox) 日期:2003年2月2日Fab 2nd, 2003 --> <NavMenu title="BenQ China"> <Category title="ETeam" id="btn1" menuitem="menu1" Down="ShowHide(btn1,menu1)" Over="MakeBtn(btn1)"> <MenuItem title="Link1" url="../ETeam/Default.aspx" /> <MenuItem title="Link2" url="../ETeam/Default.aspx" /> </Category> <Category title="R1L-a" id="btn2" menuitem="menu2" Down="ShowHide(btn2,menu2)" Over="MakeBtn(btn2)"> <MenuItem title="Link3" url="../ETeam/Default.aspx" /> <MenuItem title="Link4" url="../ETeam/Default.aspx" /> <MenuItem title="Link5" url="../ETeam/Default.aspx" /> </Category> <Category title="R1L-b" id="btn3" menuitem="menu3" Down="ShowHide(btn3,menu3)" Over="MakeBtn(btn3)"> <MenuItem title="Link6" url="../ETeam/Default.aspx" /> <MenuItem title="Link7" url="../ETeam/Default.aspx" /> <MenuItem title="Link8" url="../ETeam/Default.aspx" /> </Category> </NavMenu> xslt文件为:其中引用一个脚本文件和一个样式表文件 <?xml version="1.0" encoding="UTF-8" ?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> //注意:由.NET自动产生的xsl命名空间在运行的时候会产生错误,应将命名空间改为上面所示。 <xsl:template match="/NavMenu"> <!--引用脚本文件和样式文件--> <link rel="stylesheet" href="Styles/NavMenu.css" /> <script language="JavaScript" src="Styles/NavMenu.js"></script> <table width="150" border="0" onMouseOut="ClearMenu()"> <tr><td><xsl:value-of select="@title" /></td></tr> <!—选取根菜单 <xsl:for-each select="Category"> <tr><td class="btnNormal"><!—读取属性 <xsl:attribute name="id"><xsl:value-of select="@id"/></xsl:attribute> <xsl:attribute name="onMouseDown"><xsl:value-of select="@Down" /></xsl:attribute> <xsl:attribute name="onMouseOver"><xsl:value-of select="@Over" /></xsl:attribute> <font color="white"><xsl:value-of select="@title" /></font> </td></tr> <tr class="MenuHide"> <xsl:attribute name="id"><xsl:value-of select="@menuitem" /></xsl:attribute> <td> <table> <!—选取子菜单 <xsl:for-each select="MenuItem"> <tr><td> <a> <xsl:attribute name="href"> <xsl:value-of select="@url" /> </xsl:attribute> <xsl:value-of select="@title" /> </a> </td></tr> </xsl:for-each>
</td></tr> </xsl:for-each>
</xsl:template> </xsl:stylesheet> JS文件: document.write('<style type="text/css">'); if(window.screen.width < 1024) document.write('body,table,select,input{font:13px "宋体"}'); else document.write('body,table,select,input{font:14px "宋体"}'); document.write('</style>');
var ActiveMenu,ActiveBtn,SelectBtn; ActiveMenu = null; ActiveBtn = null; SelectBtn = null; function ShowHide(btn,menu) {//check if click on button itself if(ActiveMenu != null && ActiveMenu != menu) ActiveMenu.className = "MenuHide"; if(SelectBtn != null && SelectBtn != btn) SelectBtn.className = "btnNormal"; //make show/hide if (menu.className == "MenuHide") { menu.className = "MenuShow"; btn.className = "btnDown"; ActiveMenu = menu; SelectBtn = btn; ActiveBtn = null; } else { menu.className = "MenuHide"; btn.className = "btnNormal"; ActiveMenu = null; SelectBtn = null; } } function ClearMenu() { if(ActiveBtn != null) { ActiveBtn.className = "BtnNormal"; ActiveBtn = null; } } function MakeBtn(btn) { if(SelectBtn == btn) return; if(ActiveBtn != null) ActiveBtn.className = "BtnNormal"; btn.className = "BtnUp"; ActiveBtn = btn; } CSS文件: A:link { COLOR: #ff9900; TEXT-DECORATION:none } A:visited { COLOR: #cc6600; TEXT-DECORATION: none } A:active { } A:hover { COLOR: #cc6600; TEXT-DECORATION: underline } .allbutton { } .btnNormal {BACKGROUND-COLOR:#3366cc; BORDER-BOTTOM: 2px solid #000066; BORDER-LEFT: 1px solid #33ccff; BORDER-RIGHT: 2px solid #000066; BORDER-TOP: 1px solid #33ccff; MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px; PADDING-BOTTOM: 0px; PADDING-LEFT: 0px;cursor:hand;font: bold;} .btnUp {BACKGROUND-COLOR: #3366cc; BORDER-BOTTOM: 1px solid #003399; BORDER-LEFT: 1px solid #99ccff; BORDER-RIGHT: 1px solid #003399; BORDER-TOP: 1px solid #99ccff; MARGIN-BOTTOM: 1px; MARGIN-TOP: 1px; PADDING-BOTTOM: 1px; PADDING-LEFT: 2px;cursor:hand; color : yellow; font-style:normal; font-variant:normal; font-weight:bold } .btnDown{BACKGROUND-COLOR: #3366cc; BORDER-BOTTOM: 1px solid #003399; BORDER-LEFT: 1px solid #99ccff; BORDER-RIGHT: 1px solid #003399; BORDER-TOP: 1px solid #99ccff; MARGIN-BOTTOM: 1px; MARGIN-TOP: 1px; PADDING-BOTTOM: 1px; PADDING-LEFT: 2px;cursor:hand; color : yellow; font-style:normal; font-variant:normal; font-weight:bold } .MenuHide {display:none} .MenuShow {} .SubMenuItem {background-color: #FFFFCC} 类文件: using System; using System.Web; using System.Web.UI.HtmlControls; using System.Web.UI; using System.Xml; using System.Xml.XPath; using System.Xml.Xsl; namespace Wrox.ThePhile.Web.Controls.Server{ public class Navigator: System.Web.UI.Control{ string transformFilePath; string sourceFilePath; public string TransformFile{ //属性定义 get {return transformFilePath;} set {transformFilePath = value;}} public string SourceFile{ get {return sourceFilePath;} set {sourceFilePath = value;}} protected override void OnInit( EventArgs e ){ base.OnInit( e );} //调用Render方法(System.Web.UI.Control的基本方法)声称代表控件的HTML。 protected override void Render( HtmlTextWriter writer ){ XPathDocument xdoc = new XPathDocument(Context.Server.MapPath(sourceFilePath)); //实例化XslTransform对象 XslTransform xslt = new XslTransform(); xslt.Load( Context.Server.MapPath( transformFilePath ) ); //将转换结果输出到HtmlTextWriter流 xslt.Transform( xdoc, null, writer );}}} 引用页面的后台编码: //下面代码将自动生成 protected Wrox.ThePhile.Web.Controls.Server.Navigator MenuNav; 引用页面的前台编码:注意,此处需引用该程序集,Assembly为引用程序集的名称。 <%@Register TagPrefix="Wrox" Namespace="Wrox.ThePhile.Web.Controls.Server" Assembly="ThePhile" %> <Wrox:Navigator id="MenuNav" SourceFile="Config/NavMenu.xml" TransformFile="Transforms/NavMenu.xslt" runat="server" />
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