private void searchButton_Click(object sender, EventArgs e) { List <PurchaseReportViewModel> model = new List <PurchaseReportViewModel>(); model = _sharedManager.SearchPurchaseReportByDate(purchaseStartDateTimePicker.Text, purchaseEndDateTimePicker.Text); if (model.Count > 0) { purchaseReportDataGridView.DataSource = model; } else { purchaseReportDataGridView.DataSource = null; MessageBox.Show(@"No Result Found", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }