前台js调用后台C#方法

 <input type="button" id="but2" runat="server" value="下一步"  onclick="notice()"/>

   <script language="javascript" type="text/javascript">
   function notice()
   {
    document.write("<%caozuo();%>");
   }  
   </script>

 

 

protected void caozuo()
    {
        Response.Write("hello");

  }

 

第二种有返回值的：

<input type="button" id="but2" runat="server" value="下一步"  onclick="notice()"/>

   <script language="javascript" type="text/javascript">
   function notice()
   {
    var s="<%caozuo("hello");%>";

    document.write(s);

   }  
   </script>

 

 protected void caozuo(string str)
    {
     return str;

  }

传递变量：

function Choose(id,name)
   {
    var v = name;

var s = '<%=caozuo("'+v+'") %>';
   alert(s);
   }

 

后台：

protected string caozuo(string str)
    {
        str = "你好！" + str;
        return str;    }