how to export textbox in excel?

[Muralikrishna]

Hi,

How to export text box values in excel ? I need to export text box values in "excel".(when we click export to excel button)

Code:(when i click Export button i need to save text box value in excel sheet. ) In below code is working properly, But i need to save textbox value. (text box name is "txtBillable")

 
 
 protected void btnExportToExcel_Click(object sender, EventArgs e)
      {            
 
        gvHours.AllowPaging = false;
        gvHours.AllowSorting = false;
        gvHours.DataSource=Cache["dataset"];
        gvHours.DataBind();
        ChangeControlsToValue(gvHours);
        Response.ClearContent();
        string from = dtFrom.SelectedDate.ToShortDateString();
        string to = dtTo.SelectedDate.ToShortDateString();
        Response.AddHeader("content-disposition", "attachment; filename=" + from + "_to_" + to + ".xls");
        Response.ContentType = "application/excel";
        StringWriter sWriter = new StringWriter();
        HtmlTextWriter hTextWriter = new HtmlTextWriter(sWriter);
        HtmlForm hForm = new HtmlForm();
        gvHours.Parent.Controls.Add(hForm);
        hForm.Attributes["runat"] = "server";
        hForm.Controls.Add(gvHours);
        hForm.RenderControl(hTextWriter);
        Response.Write(sWriter.ToString());
        gvHours.AllowPaging = true;
        gvHours.AllowSorting = true;
        gvHours.DataSource = Cache["dataset"];
        gvHours.DataBind();      
        Response.End();      
 
      }
 
      private void ChangeControlsToValue(Control gridView)
      {
        Literal literal = new Literal();
 
        for (int i = 0; i < gridView.Controls.Count; i++)
        {
          if (gridView.Controls[i].GetType() == typeof(LinkButton))
          {
            literal.Text = (gridView.Controls[i] as LinkButton).Text;
            gridView.Controls.Remove(gridView.Controls[i]);
            gridView.Controls.AddAt(i, literal);
          }
          else if (gridView.Controls[i].GetType() == typeof(DropDownList))
          {
            literal.Text = (gridView.Controls[i] as DropDownList).SelectedItem.Text;
            gridView.Controls.Remove(gridView.Controls[i]);
            gridView.Controls.AddAt(i, literal);
          }
          else if (gridView.Controls[i].GetType() == typeof(CheckBox))
          {
            literal.Text = (gridView.Controls[i] as CheckBox).Checked ? "True" : "False";
            gridView.Controls.Remove(gridView.Controls[i]);
            gridView.Controls.AddAt(i, literal);
          }
          if (gridView.Controls[i].HasControls())
          {
 
            ChangeControlsToValue(gridView.Controls[i]);
 
          }
 
        }
 
      }
 
      protected void gvHours_RowDataBound(object sender, GridViewRowEventArgs e)
      {
        btnExportToExcel.Visible = true;
      }
 
      protected void gvHours_SelectedIndexChanged(object sender, EventArgs e)
      {
 
      }
 
    }
 
 

Please help me!(I need to save textbox value when we click export to excel button).