.Net 點擊按鈕實現動態添加行並保持頁面的資料不變

 /// <summary>
        /// 建立一個空行

        /// </summary>
        public DataTable AddTableRow()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("BNAME", typeof(string)));
            dt.Columns.Add(new DataColumn("SYMBOL", typeof(string)));
            dt.Columns.Add(new DataColumn("F0100", typeof(string)));//評級
            dt.Columns.Add(new DataColumn("F0120", typeof(string)));//理論價值
            dt.Columns.Add(new DataColumn("F0150", typeof(string)));//到期收益率
            dt.Columns.Add(new DataColumn("F0160", typeof(string)));//純債價格
            DataRow dr = dt.NewRow();
            dr[0] = "";
            dr[1] = "";
            dr[2] = "";
            dr[3] = "";
            dr[4] = "";
            dr[5] = "";
            dt.Rows.Add(dr);
            ViewState["DataTable"] = dt;
            return dt;
        }

 

/// <summary>
        /// 點擊添加按鈕
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnAddBondStock_Click(object sender, EventArgs e)
        {
            DataTable dt = null;
            //SaveModule();
            if (ViewState["DataTable"] == null)
            {
                dt = AddTableRow();
                ViewState["DataTable"] = dt;
            }
            else
            {
                dt = CopyTableData();
                DataRow dr = dt.NewRow();
                dt.Rows.Add(dr);
            }
            this.BondRpt.DataSource = dt;
            this.BondRpt.DataBind();
            ViewState["DataTable"] = dt;
        }

 

/// <summary>
        /// 擷取頁面添加的資料並儲存到DataTable
        /// </summary>
        /// <returns></returns>
        public DataTable CopyTableData()
        {
            DataTable dt = (ViewState["DataTable"] as DataTable).Clone();//複製DataTable
            foreach (RepeaterItem r in BondRpt.Items)
            {
                DataRow dr = dt.NewRow();
                dr["BNAME"] = (r.FindControl("BondName") as TextBox).Text.Trim();
                dr["SYMBOL"] = (r.FindControl("BondCode") as TextBox).Text.Trim();
                dr["F0100"] = (r.FindControl("ddlGrade") as DropDownList).SelectedValue;
                dr["F0120"] = (r.FindControl("TheoreticalValue") as TextBox).Text.Trim();
                dr["F0150"] = (r.FindControl("YTM") as TextBox).Text.Trim();
                dr["F0160"] = (r.FindControl("PureDebtPrice") as TextBox).Text.Trim();
                dt.Rows.Add(dr);
            }
            return dt;
        }

 /// <summary>
        /// 刪除操作
        /// </summary>
        /// <param name="source"></param>
        /// <param name="e"></param>

protected void BondRpt_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName == "deleteRow") {
                DataTable dt = CopyTableData();
                dt.Rows.RemoveAt(e.Item.ItemIndex);
                ViewState["DataTable"] = dt;
                BindData();
            }
        }