在后台获取前台按钮里的值(如LinkButton)

前台ASPX:

<asp:LinkButton ID="LinkButton1" CommandArgument='<%# Eval("id") %>' onclick="LinkButton1_Click" runat="server" CssClass="dayifen">打一分</asp:LinkButton>

后台CS:

protected void LinkButton1_Click(object sender, EventArgs e)
    {
        LinkButton btn = (LinkButton)sender;
        int newsId = int.Parse(btn.CommandArgument);

        if (NewsManager.AddScore(newsId))
        {
            Response.Write("<script>alert(\"打分成功！\")</script>");
            NewsListBind();            
        }
        else
        {
            Response.Write("<script>alert(\"打分失败！\")</script>");
        }
    }