求助，如何在datalist控件中使用删除

我想在这个基础上增加删除功能


a.aspx页面的关键代码：
<asp:datalist id="DataList1" runat="server" width="700px" CellPadding="4" ForeColor="#333333">
                  <FooterStyle  ForeColor="White" Font-Bold="True" BackColor="#507CD1"></FooterStyle>

                  <SelectedItemStyle BackColor="#D1DDF1" ForeColor="#333333" Font-Bold="True">< lectedItemStyle>
                  <ItemTemplate>
                      <table style="width: 700">
                          <tr>
                              <td style="width: 10px; height:2px"></td>
                              <td style="width: 400px; height:2px"><a href="stushow.aspx?id=<%# Eval("id")%>" target=mainFrame><asp:Label id="Label2" runat="server" Text='<%# Eval("title") %>'></asp:Label></a></td>
                              <td style="width: 70px; height:2px"><a href="student.aspx?id=<%# Eval("studentID")%>" target=mainFrame><asp:Label id="Label3" runat="server" Text='<%# Eval("studentID") %>'></asp:Label></td>
                              <td align="right" style="width: 80px; height:2px"><asp:Label id="Label4" runat="server" Text='<%# Eval("creattime") %>'></asp:Label></td>
                         </tr>
                    </table>
                </ItemTemplate>

                <AlternatingItemStyle BackColor="White"></AlternatingItemStyle>

                <ItemStyle BackColor="#EFF3FB"></ItemStyle>

                <HeaderStyle BackColor="#507CD1" ForeColor="White" Font-Bold="True"></HeaderStyle>
          </asp:datalist>

a.aspx.cs页面中的关键代码：
public partial class stustudy1: System.Web.UI.Page
{
    SqlConnection sms_conn;
    protected void Page_Load(object sender, EventArgs e)
    {
        string sms_connstr = System.Configuration.ConfigurationManager.AppSettings["sms_dbconn"];
        // 建立连接
        sms_conn = new SqlConnection(sms_connstr);
        if (!IsPostBack)
            dataListBind();
    }
    private void dataListBind() //绑定文件
    {
        sms_conn.Open();
        string sms_sqlstr = "select id,title,content,type,type1,studentID,convert(varchar(12),creattime,102) as creattime from writeshow where type=5 and type1=1";
        SqlDataAdapter sms_adp = new SqlDataAdapter(sms_sqlstr, sms_conn);
        DataSet sms_ds = new DataSet();
        sms_adp.Fill(sms_ds);
        sms_conn.Close();
        DataList1.DataSource = sms_ds;
        DataList1.DataBind();
        sms_ds.Clear();
        sms_ds.Dispose();
    }
}
谢谢！