<style>
.CssStyle1 { FONT: 700 12pt verdana; COLOR: yellow }
</style>
string conStr = "Provider=Microsoft.JET.OLEDB.4.0;data source= c:\\Patients2000.mdb";
string sqlStr = "SELECT * FROM Patients";
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(conStr);
DataSet ds = new DataSet();
System.Data.OleDb.OleDbDataAdapter daCust = new System.Data.OleDb.OleDbDataAdapter(sqlStr, conn);
daCust.Fill(ds);
FpSpread1.DataSource = ds;
FpSpread1.ActiveSheetView.AllowColumnMove = true;
FpSpread1.ActiveSheetView.GroupBarVisible = true;
FpSpread1.ActiveSheetView.AllowGroup = true;
FpSpread1.GroupColumnHeaderCssClass = "CssStyle1";