object ds = new System.Data.DataSet();
DataTable name;
DataTable city;
name = ds.Tables.Add("Customers");
name.Columns.AddRange(new DataColumn[] {
new DataColumn("LastName", typeof(string)),
new DataColumn("FirstName", typeof(string)),
new DataColumn("ID", typeof(Int32))});
name.Rows.Add(new object[] {
"Fielding",
"William",
0});
name.Rows.Add(new object[] {
"Williams",
"Arthur",
1});
name.Rows.Add(new object[] {
"Zuchini",
"Theodore",
2});
city = ds.Tables.Add("City/State");
city.Columns.AddRange(new DataColumn[] {
new DataColumn("City", typeof(string)),
new DataColumn("Owner", typeof(Int32)),
new DataColumn("State", typeof(string))});
city.Rows.Add(new object[] {
"Atlanta",
0,
"Georgia"});
city.Rows.Add(new object[] {
"Boston",
1,
"Mass."});
city.Rows.Add(new object[] {
"Tampa",
2,
"Fla."});
ds.Relations.Add("City/State", name.Columns["ID"], city.Columns["Owner"]);
FpSpread1.DataSource = ds;
FpSpread1.Sheets[0].ClickHeaderCellToExpand = true;