1. 添加视图

   <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

   <script language="javascript" type="text/javascript" src="/Scripts/jquery-1.2.6.min.js"></script>

   <script language="javascript" type="text/javascript">

   function HelloJquery()

   {

   $.ajax(

   {

   url: "HelloJason",

   type:"POST",

   datatype : "json",

   timeout : 1000,

   success: GetResult

   }

   );

   }

   function GetResult(result)

   {

   alert(result.toString());

   }

   </script>

   <h2>Async</h2>

   <input type="button" value="Get Server Data" onclick="HelloJquery()" />

   </asp:Content>

2. 添加控制器

   public ActionResult HelloJason()

     {

    return this.Json("From server");

}