Rahul's space

We can use LINQ to make a new datasource containing a displayfield which is formatted, the way you want it to be, like:

datasource =from x in products

selectnew{
                     x.Id,
                     x.Code,
                     x.Description,DisplayField=String.Format("{0} ({1})", x.Code, x.Description)};

comboBox.DataSource= datasource;
comboBox.DataValueField="Id";
comboBox.DataTextField="DisplayField";
comboBox.DataBind();

Hope this help !