gcSpreadSheet1.Sheets[0].ColumnHeader.RowCount = 2;
gcSpreadSheet1.Sheets[0].RowHeader.ColumnCount = 2;
gcSpreadSheet1.Sheets[0].ColumnHeader.Cells(0, 2).Text = "Column";
gcSpreadSheet1.Sheets[0].RowHeader.AutoTextIndex = 1;
gcSpreadSheet1.Sheets[0].RowHeader.AutoText = GrapeCity.Windows.SpreadSheet.Data.HeaderAutoText.Letters;
gcSpreadSheet1.Sheets[0].ColumnHeader.AutoTextIndex = 1;
gcSpreadSheet1.Sheets[0].ColumnHeader.AutoText = GrapeCity.Windows.SpreadSheet.Data.HeaderAutoText.Numbers;
gcSpreadSheet1.Invalidate();