string conStr = "Provider=Microsoft.JET.OLEDB.4.0;data source=D:\\nwind.mdb";
string sqlStr = "SELECT * FROM Orders";
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(conStr);
DataSet ds = new DataSet();
System.Data.OleDb.OleDbDataAdapter da = new System.Data.OleDb.OleDbDataAdapter(sqlStr, conn);
da.Fill(ds, "Orders");
FarPoint.Win.Spread.Model.DefaultSheetDataModel dataModel = new FarPoint.Win.Spread.Model.DefaultSheetDataModel(ds, "Orders");
fpSpread1.ActiveSheet.Models.Data = dataModel;