数据控件头的修改

前台代码：

<asp:GridView ID="GridView1" runat="server"  BorderColor="Black" AutoGenerateColumns="False" OnRowCreated="GridView1_RowCreated"
            OnRowDataBound="GridView1_RowDataBound">
            <Columns>
                <asp:BoundField DataField="编号" HeaderText="编号" />
                <asp:BoundField DataField="姓名" HeaderText="姓名" />
                <asp:BoundField DataField="出生年月" HeaderText="出生年月" />
                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
                <asp:BoundField DataField="起薪" HeaderText="起薪" />
            </Columns>
        </asp:GridView>

后台代码：

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            databind();
        }

    }
    public void databind()
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["Conn"].ToString());
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = con;
        cmd.CommandText = "select * from T_Message";
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);
        this.GridView1.DataSource = ds.Tables[0];
        this.GridView1.DataBind();
    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        foreach (TableCell item in e.Row.Cells)
        {
            item.Attributes.Add("style", "border-color:black");
            
        }
    }
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Header)
        {
            TableCellCollection tc = e.Row.Cells;
            tc.Clear();
            tc.Add(new TableHeaderCell());
            tc[0].Attributes.Add("colspan", "6");
            tc[0].Attributes.Add("bgcolor", "#006699");
            tc[0].Text = "全部信息</th></tr><tr>";
            tc.Add(new TableHeaderCell());
            tc[1].Text = "编号";
            tc[1].Attributes.Add("bgcolor", "DarkSeaGreen");
            tc.Add(new TableHeaderCell());
            tc[2].Attributes.Add("colspan", "2");
            tc[2].Attributes.Add("bgcolor", "LightSteelBlue");
            tc[2].Text = "基本信息";
            tc.Add(new TableHeaderCell());
            tc[3].Attributes.Add("colspan", "2");
            tc[3].Attributes.Add("bgcolor", "DarkSeaGreen");
            tc[3].Text = "联系方式";
            tc.Add(new TableHeaderCell());
            tc[4].Attributes.Add("bgcolor", "LightSteelBlue");
            tc[4].Text = "福利</th>";
            
        }
    }