DataSet ds = new DataSet();
DataTable emp = new DataTable("Employees");
DataTable div = new DataTable("Division");
emp.Columns.Add("LastName");
emp.Columns.Add("FirstName");
emp.Rows.Add(new Object[] { "Jones", "Marianne" });
emp.Rows.Add(new Object[] { "Fieldes", "Anna" });
div.Columns.Add("Section");
div.Columns.Add("Specialty");
div.Rows.Add(new Object[] { "Finance", "Taxes" });
div.Rows.Add(new Object[] { "Mergers", "Legal" });
ds.Tables.AddRange(new DataTable[] { emp, div });
FarPoint.Win.Spread.CellType.MultiColumnComboBoxCellType mcb = new FarPoint.Win.Spread.CellType.MultiColumnComboBoxCellType();
mcb.DataSourceList = ds;
fpSpread1.ActiveSheet.Cells[0, 0].CellType = mcb;
FarPoint.Win.Spread.CellType.MultiColumnComboBoxCellType mcb1 = new FarPoint.Win.Spread.CellType.MultiColumnComboBoxCellType(mcb);
fpSpread1.ActiveSheet.Cells[0, 1].CellType = mcb1;