I have several numeric columns in my grid where the values could be in different currencies.
They therefore need different formatting at cell level.

At present I am keeping a collection with one UltraCurrencyEditor for each currency:

UltraCurrencyEditor editor = new UltraCurrencyEditor();
editor.MaskDataMode = Infragistics.Win.UltraWinMaskedEdit.MaskMode.IncludeBoth;
editor.MaskDisplayMode = Infragistics.Win.UltraWinMaskedEdit.MaskMode.IncludeLiterals;
editor.FormatString = "AC$###,###,###,##0.00";

currencyEditors.Add(row.GetCellValue(currencyColumn).ToString(), editor);

I'm then setting this against the cell:

row.Cells[numericColumn].EditorControl = currencyEditors[row.GetCellValue(currencyColumn).ToString()];

This approach seems to use a lot of memory.
Disabling this code almosts halves the entire memory usage for the form.
Is there a better way?

(The values do no need to be edited, it's for display purposes only).