public void ProcessDataToExcel()
{
excelHandler.writeToExcel();
}
public void ExportDGV_ToExcel(MainForm mainForm)
{
DataTable dt = (mainForm.dgvDetailBreakdown.DataSource as DataTable);
excelHandler.writeToExcel(dt, new DateTime(1, 1, 1), new DateTime(1, 1, 1));
}