private void btnAddFlat_Click(object sender, EventArgs e) { FlatManager f = new FlatManager(); f.BuildingID = BuildingID; f.FlatNo = txtFlatNo.Text; f.Price = Convert.ToInt64(txtPrice.Text); f.DownPayment = 0; f.AmountPayed = 0; f.IsSelled = false; bool res = f.AddFlat(f); if (res) { MessageBox.Show("Record Inserted Successfully"); bindFlatGrid(); switchpnl(false); } else { MessageBox.Show("Error"); } }