listbox/combobox value

Object population:
private void button4_Click(object sender, EventArgs e)
{

cb1.Items.Clear();
IList lstData = new List();
for (int i = 1; i < 10; i++)
{
int j = i * 10;
Console.WriteLine("\t{0}", i.ToString());
spSite spItem = new spSite(i.ToString(), j.ToString());
lstData.Add(spItem);
}
cb1.DisplayMember = "name";
cb1.ValueMember = "guid";
cb1.DataSource = lstData;
}

Retrieve member value (not display text):
private void button5_Click(object sender, EventArgs e)
{
Console.WriteLine(cb1.SelectedValue.ToString());
}

Class def:
public struct spSite
{
private string _name;
private string _guid;

public spSite(string name, string guid)
{
_name = name;
_guid = guid;
}

public string guid
{
get { return _guid; }
}

public string name
{
get { return _name; }
}

public void setName (string name)
{
_name = name;
}

public void setGuid (string guid)
{
_guid = guid;
}
}