先看HTML,我们引用Jquery,放两个DropDownList: 代码如下: style type="text/css" #ddlEmployeeCars { display:none; position:absolute; top:50px; left:9px; } /style script language="javascript" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"/script asp:DropDownList runat="server" AppendDataBoundItems="true" asp:ListItem Tex...
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