GrapeCity.Windows.SpreadSheet.Data.CellRange r;
r = new GrapeCity.Windows.SpreadSheet.Data.CellRange(0, 0, 3, 3);
gcSpreadSheet1.Sheets[0].AddSpanCell(r, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells);
//gcSpreadSheet1.Sheets[0].AddSpanCell(1, 1, 3, 3);
//gcSpreadSheet1.Sheets[0].AddSpanCell(4, 0, 2, 2, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells);
gcSpreadSheet1.Sheets[0].RowHeader.ColumnCount = 2;
gcSpreadSheet1.Sheets[0].ColumnHeader.RowCount = 2;
GrapeCity.Windows.SpreadSheet.Data.CellRange r2;
r2 = new GrapeCity.Windows.SpreadSheet.Data.CellRange(0, 0, 2, 2);
gcSpreadSheet1.Sheets[0].AddSpanCell(r2, GrapeCity.Windows.SpreadSheet.Data.SheetArea.RowHeader);
gcSpreadSheet1.Invalidate();