Текст не получен ввод данных

---

   <asp:GridView ID="GridView1" Width="100%" runat="server"
                  AutoGenerateColumns="False"
                  OnRowCancelingEdit="GridView1_RowCancelingEdit"
                  OnRowDeleting="GridView1_RowDeleting"
                  OnRowEditing="GridView1_RowEditing"
                  OnRowUpdating="GridView1_RowUpdating"
                  DataKeyNames="MATIN">
                  <Columns>
                      <asp:BoundField DataField="MATIN" HeaderText="STT" ReadOnly="True" />
                      <asp:TemplateField HeaderText="Tiêu Đề">
                          <EditItemTemplate>
                              <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("TIEUDE") %>'></asp:TextBox>
                          </EditItemTemplate>
                          <ItemTemplate>
                              <asp:Label ID="Label1" runat="server" Text='<%# Eval("TIEUDE") %>'></asp:Label>
                          </ItemTemplate>
                      </asp:TemplateField>
                      <asp:TemplateField HeaderText="Tóm Tắt">
                          <EditItemTemplate>
                              <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("TOMTAT") %>'></asp:TextBox>
                          </EditItemTemplate>
                          <ItemTemplate>
                              <asp:Label ID="Label2" runat="server" Text='<%# Eval("TOMTAT") %>'></asp:Label>
                          </ItemTemplate>
              </Columns>
</asp:Gridview>

private Customer_BUS bus = new Customer_BUS();
        protected void Page_Load(object sender, EventArgs e)
        {
            LoadData();
        }

private void LoadData()
        {
            DataTable lst = bus.GetTinTuc();
            GridView1.DataSource = lst;
            GridView1.DataBind();
        }
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {

            int id = int.Parse((GridView1.DataKeys[e.RowIndex].Value).ToString());
            string td = (GridView1.Rows[e.RowIndex].Cells[1].Controls[1] as TextBox).Text;
            string tt = (GridView1.Rows[e.RowIndex].Cells[2].Controls[1] as TextBox).Text;
            string text = (GridView1.Rows[e.RowIndex].Cells[6].Controls[1] as TextBox).Text;
            FileUpload file = ((FileUpload)GridView1.Rows[e.RowIndex].FindControl("FileUpload1"));
            string img;
            int TL = int.Parse(((DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropDownList1")).SelectedValue);
            if (file.HasFile)
            {
                file.SaveAs(Server.MapPath("images/" + file.FileName));
                img = "images/" + file.FileName;
                bus.UpdaterTinTuc(id, td, tt, text, img, TL);
            }
            else
            {
                bus.UpdaterTinTuc2(id, td, tt, text, TL);
            }
            GridView1.EditIndex = -1;
            LoadData();
        }


        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            LoadData();
        }

        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView1.EditIndex = -1;
            LoadData();
        }

Что я уже пробовал:

Мне нужны обновленные данные, но введенные данные не получены текстовым полем в Row_Editing

---