populate combobox using collectioniewSource

Question

Hi All.
I'm trying to populate combobox. That is my code:

MyDataSet MyDataSet = new MyDataSet();

MyDataSetTableAdapters.DepartmentTableAdapter DepartmentTableAdapter = new MyDataSetTableAdapters.DepartmentTableAdapter();

BindingListCollectionView cvDepartment;

DepartmentTableAdapter.Fill(MyDataSet.Department, 0);

cvDepartment = CollectionViewSource.GetDefaultView(MyDataSet.Department);

DepartmentComboBox.ItemsSource = cvDepartment;

What is wrong in populate combobox?

Thanks.