FarPoint.Win.Spread.Model.DefaultSheetDataModel dataModel = new FarPoint.Win.Spread.Model.DefaultSheetDataModel(5, 5);
object o;
dataModel.SetValue(0, 0, "TestValue");
fpSpread1.ActiveSheet.Models.Data = dataModel;
o = dataModel.GetValue(0, 0);
listBox1.Items.Add(o.ToString());