private void SubmitButton_Click(object sender, EventArgs e)
{
if (_purchaseManager.PurchaseModelList.Count == 0)
{
MessageBox.Show("Add Item First");
return;
}
_purchaseManager.AddListToPurchase();
purchaseDataGridView.DataSource = null;
purchaseDataGridView.DataSource = _purchaseManager.PurchaseModelList;
ClearUi("all");
}
