private void FormAddProduct_Click(object sender, EventArgs e)
{
DataProcess dt = new DataProcess();
List <Supplier> list = dt.ListSuppliers();
cbSupplier.DataSource = list;
cbSupplier.DisplayMember = "Name";
cbSupplier.ValueMember = "ID";
cbSupplier.SelectedIndex = 0;
//DataProcess dt = new DataProcess();
List <Category> list1 = dt.ListCategorys();
cbCategory.DataSource = list1;
cbCategory.DisplayMember = "Name";
cbCategory.ValueMember = "ID";
cbCategory.SelectedIndex = 0;
}
