初學者問題

看到下面一段代碼<html>
   <head>
      <link rel="stylesheet"href="intro.css">
   </head>   <script language="C#" runat=server>       void SubmitBtn_Click(Object sender, EventArgs e) {
           Message.Text = "Hi " + Name.Text + ", you selected: " + Category.SelectedItem;
       }   </script>   <body>       <center>       <form action="intro6.aspx" method="post" runat="server">           <asp:adrotator AdvertisementFile="ads.xml" BorderColor="black" BorderWidth=1 runat="server"/>           <h3> Name: <asp:textbox id="Name" runat="server"/>           Category:  <asp:dropdownlist id="Category" runat=server>
                         <asp:listitem>psychology</asp:listitem>
                         <asp:listitem>business</asp:listitem>
                         <asp:listitem>popular_comp</asp:listitem>
                      </asp:dropdownlist>           </h3>           <asp:button text="Lookup" OnClick="SubmitBtn_Click" runat="server"/>           <p>           <asp:label id="Message" runat="server"/>       </form>       </center>   </body>
</html> <script language="C#" runat=server>       void SubmitBtn_Click(Object sender, EventArgs e) {
           Message.Text = "Hi " + Name.Text + ", you selected: " + Category.SelectedItem;
       }   </script>
是客戶端腳本嗎？用language="C#"  不用language = "javascript"了？