Как экспортировать записи из gridview в оконное приложение C#

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How to Export Records from Gridview in window application c#
Records Don'tShow in Excel File...

private void btn_Export_Click(object sender, EventArgs e)
     {

         Microsoft.Office.Interop.Excel._Application excel = new Microsoft.Office.Interop.Excel.Application();
         Microsoft.Office.Interop.Excel._Workbook workbook = excel.Workbooks.Add(Type.Missing);
         Microsoft.Office.Interop.Excel._Worksheet worksheet = null;

         try
         {

             worksheet = workbook.ActiveSheet;

             worksheet.Name = "ExportedFromDatGrid";

             int cellRowIndex = 1;
             int cellColumnIndex = 1;

             //Loop through each row and read value from each column. 
             for (int i = 0; i < dataGridView.Rows.Count - 1; i++)
             {
                 for (int j = 0; j < dataGridView.Columns.Count; j++)
                 {
                     // Excel index starts from 1,1. As first Row would have the Column headers, adding a condition check. 
                     if (cellRowIndex == 1)
                     {
                         worksheet.Cells[cellRowIndex, cellColumnIndex] = dataGridView.Columns[j].HeaderText;
                     }
                     else
                     {
                         worksheet.Cells[cellRowIndex, cellColumnIndex] = dataGridView.Rows[i].Cells[j].Value.ToString();
                     }
                     cellColumnIndex++;
                 }
                 cellColumnIndex = 1;
                 cellRowIndex++;
             }

             //Getting the location and file name of the excel to save from user. 
             SaveFileDialog saveDialog = new SaveFileDialog();
             saveDialog.Filter = "Excel files (*.xlsx)|*.xlsx|All files (*.*)|*.*";
             saveDialog.FilterIndex = 2;

             if (saveDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
             {
                 workbook.SaveAs(saveDialog.FileName);
                 MessageBox.Show("Export Successful");
             }
         }
         catch (System.Exception ex)
         {
             MessageBox.Show(ex.Message);
         }
         finally
         {
             excel.Quit();
             workbook = null;
             excel = null;
         } 
         
         
     }

What I have tried:

<pre>
How to Export Records from Gridview in window application c#
Records Don'tShow in Excel File...

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