Export selected rows of DataGridView based on checkBx select

Question

Please edit the code because I am unable to export the selected rows of DataGridView to Excel based on Checkbox selection .The below code export all the rows even those rows are not selected(checked)

 

private void btnExportToExcel_Click(object sender, EventArgs e)

{

      DataGridViewRow row = new DataGridViewRow();

      for (int i = 0; i < CategoryGV.Rows.Count; i++)

      {

            row = CategoryGV.Rows[i];

            if (Convert.ToBoolean(row.Cells["chkBox"].Value))

            {

                     int id = Convert.ToInt16(row.Cells["id"].Value);

                     exportSelectedRowsToExcel();

                     i--;

            }

      }

}

 ==========================================================================

 

 

public void exportSelectedRowsToExcel()

{

      // creating Excel Application

      Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();

 

      // creating new WorkBook within Excel application

      Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);

 

      // creating new Excelsheet in workbook

      Microsoft.Office.Interop.Excel._Worksheet worksheet = null;

 

      // see the excel sheet behind the program

      app.Visible = true;

 

      // get the reference of first sheet. By default its name is Sheet1.

      // store its reference to worksheet

      worksheet = workbook.Sheets["Sheet1"];

      worksheet = workbook.ActiveSheet;

 

      // changing the name of active sheet

      worksheet.Name = DateTime.Now.ToString("yyyyMMddHHmmssfff");

      // storing header part in Excel

      for (int i = 1; i < CategoryGV.Columns.Count + 1; i++)

      {

            worksheet.Cells[1, i] = CategoryGV.Columns[i - 1].HeaderText;

      }

      // storing Each row and column value to excel sheet

 

      for (int i = 0; i < CategoryGV.Rows.Count - 1; i++)

      {

               for (int j = 0; j < CategoryGV.Columns.Count; j++)

               {

                     worksheet.Cells[i + 2, j + 1] = Convert.ToString(CategoryGV.Rows[i].Cells[j].Value);

               }

      }

      // save the application

      workbook.SaveAs(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\ExportedCategory.xls",                                        Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,                                         Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing,                                        Type.Missing, Type.Missing);

      // Exit from the application

      app.Quit();

}