private void BtnSupplierAdd_Click(object sender, EventArgs e)
{
int SupplierId = Convert.ToInt32(txtSupplierId.Text);
string SupName = txtNewSuppler.Text;
//int ProductId = (int) cbProducts.SelectedItem;
Product prod = cbProducts.SelectedItem as Product;
TravelWinRepository suppliers = new TravelWinRepository();
suppliers.InsertSupplier(SupplierId, SupName, prod.ProductId);
gridSuppliers.DataSource = suppliers.GetSuppliers();
callRefreshData();
}
