Visual Studio 2008 checkedlistbox

figured this way to databind checkedlistbox, not sure why DataSourse, ValueMember, and DisplayMember do not appear in intellisense

this.clientsTableAdapter.Fill(this.dataSet1.Clients);
practice2.DataSet1.ClientsDataTable t = clientsTableAdapter.GetData();
checkedListBox1.DataSource = t;
checkedListBox1.ValueMember = t.IdColumn.ColumnName;
checkedListBox1.DisplayMember = t.NameColumn.ColumnName;