// load data if a SupplierID is passed from Main form
private void loadData()
{
lstProducts.Items.Clear();
List <Suppliers> supplierDetails = new List <Suppliers>();
List <Products_Suppliers> supplierProducts = new List <Products_Suppliers>();
supplierDetails = SuppliersDB.SupplierDetail((int)supId);
txtSupplierID.Text = supplierDetails[0].SupplierId.ToString();
txtSupName.Text = supplierDetails[0].SupName.ToString();
supplierProducts = Products_SuppliersDB.SupplierProducts((int)supId);
foreach (Products_Suppliers sprod in supplierProducts)
{
lstProducts.Items.Add(sprod);
}
}