string[] tokens = text.Split(',');
for (int i = 0; i < tokens.Length; i++)
{
yourListBox.Add(new ListItem(token[i], token[i]));
}
string[] tokens = text.Split(',');
for (int i = 0; i < tokens.Length; i++)
{
yourListBox.Add(new ListItem(token[i], token[i]));
}