DataTable CreateDataTable ()
{
DataTable dataTable = new DataTable ();
dataTable.Columns.Add ("displaymember");
dataTable.Columns.Add ("valuemember");
DataRow row = dataTable.NewRow ();
row [0] = "lower";
row [1] = "a";
dataTable.Rows.Add (row);
row = dataTable.NewRow ();
row [0] = "upper";
row [1] = "A";
dataTable.Rows.Add (row);
row = dataTable.NewRow ();
row [0] = "else";
row [1] = "e";
dataTable.Rows.Add (row);
return dataTable;
}