Populate data in silverlight from database

no im very much new to silverlight and exploring new things this is my first projetc in silverlight(c#.net).
can u help me out in the easiest way.

//Code of Service File
[OperationContract]
public List<BrMaster> GetBranch()
{
using (Entities context = new Entities())
{
return (from c in context.BranchMasters
select new BrMaster
{
Name=c.Name,
}).Take<BrMaster>(10).ToList< BrMaster>();
}
}


public class BrMaster
{
public string Name { get; set; }
}


//code of Form
private void Page_Loaded(object sender, RoutedEventArgs e)
{
//var client = new Services.ContactServiceClient();
var client= new ServiceReference1.AlumniServiceClient();

client.GetBranchCompleted += (s, ea) =>
{
dataGrid1.AutoGenerateColumns = true;
dataGrid1.ItemsSource = ea.Result;
};
client.GetBranchAsync();
}

this code i have used for DatagridView.
can u help me out it for comboBox???