UnitSymbol.UST_NONE & New Units

[Julian.Wandzilak]

Sometime ago I did a Revit API Course on Udemy by Boost Your BIM. Some part of the code were not updated and I had to play with new UnitTypeId. For most of the time it was somehow easy and revit help plus some googling was sufficient. Except setting unit symbol to none.

So I posted below 2 snippets of code:

Old way (pre 2022):

FormatOptions foVolume = units.GetFormatOptions(UnitType.UT_Volume);
foVolume.DisplayUnits = DisplayUnitType.DUT_CUBIC_METERS;
foVolume.UnitSymbol = UnitSymbolType.UST_NONE;

My brute force way:

FormatOptions foVolume = units.GetFormatOptions(SpecTypeId.Volume);
foVolume.SetUnitTypeId(UnitTypeId.CubicMeters);
foVolume.SetSymbolTypeId(foVolume.GetValidSymbols()[0]);

My solution does work, but it doesn't look nice. Is there any better way of doing it?

[mhannonQ65N2 · Accepted solution]

You can use a ForgeTypeId with an empty string to specify no symbol.

FormatOptions foVolume = units.GetFormatOptions(SpecTypeId.Volume);
foVolume.SetUnitTypeId(UnitTypeId.CubicMeters);
ForgeTypeId emptySymbol = new ForgeTypeId("");
foVolume.SetSymbolTypeId(emptySymbol);