在GridView表中添加新行

protected void grid_RowCreated(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
    {
        if (e.Row.RowType == System.Web.UI.WebControls.DataControlRowType.Header)
        {
            System.Web.UI.WebControls.TableCellCollection cells = e.Row.Cells;
            cells.Clear();
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[0].Text = "-";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[1].Attributes.Add("class", "bt1");
            cells[1].Attributes.Add("colspan", "4");
            cells[1].Text = "手機終端";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[2].Attributes.Add("class", "bt1");
            cells[2].Attributes.Add("colspan", "3");
            cells[2].Text = "其他終端";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[3].Attributes.Add("class", "bt1");
            cells[3].Attributes.Add("colspan", "3");
            cells[3].Text = "彙總</th></tr><tr>"; 
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[4].Text = "日期 / 終端";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[5].Text = "安卓手機";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[6].Text = "蘋果手機";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[7].Text = "其他手機";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[8].Text = "手機彙總";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[9].Text = "PC終端";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[10].Text = "平板電腦";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[11].Text = "其他";
            cells.Add(new System.Web.UI.WebControls.TableHeaderCell());
            cells[12].Text = "彙總</th></tr><tr>";
        }
    }