topic Re: Revit 2021 DisplayUnitType in Revit API Forum

Revit 2021 DisplayUnitType

stephen_harrison — Fri, 09 Oct 2020 13:01:36 GMT

I hope someone can help but I am struggling to update a section of my code I have been utilising for a few years now but due to it being deprecated in Revit 2021 I need to update it.

I have read the few posts I have found on the subject as well as the Revit SDK Revit Platform API Changes and Additions but I feel as though I am having a senior moment and missing the obvious:

My code snippet is:

case StorageType.Double:

double? nullable = t.AsDouble(fp);

if (nullable.HasValue)

{

DisplayUnitType displayUnitType = fp.DisplayUnitType;

value = UnitUtils.ConvertFromInternalUnits(nullable.Value, displayUnitType).ToString();

break;

}

Note

t = FamilyType and fp = FamilyParameter

Any assistance would be appreciated in order to hopefully put an end to my senior moment!!

Thank you in advance.

Re: Revit 2021 DisplayUnitType

jeremytammik — Fri, 09 Oct 2020 14:26:16 GMT

I have heard that expression several times recently... 'senior moment'.

I just looked it up, and apparently the first know usage is from 1996:

https://www.merriam-webster.com/dictionary/senior%20moment

I was not aware of it until just recently...

Anyway, maybe this post will help:

https://forums.autodesk.com/t5/revit-api-forum/forgetypeid-how-to-use/m-p/9455305

Please let us know, and also how you end up migrating your code to eliminate the deprecated API use.

Thank you!

Cheers

Jeremy

Re: Revit 2021 DisplayUnitType

stephen_harrison — Sat, 10 Oct 2020 13:19:18 GMT

Thank you Jeremy for your prompt response.

You obviously haven't got to that stage in life were senior moments become such a regular occurrence that you start to question how you manage to do anything in the first place!

I regret I have read that post and a few others several times and still cannot see what should be a very obvious solution?

Re: Revit 2021 DisplayUnitType

jeremytammik — Sat, 10 Oct 2020 14:08:22 GMT

Not quite, but I'm getting there and working on it.

I'll take a look at The Building Coder samples... there may be a similar migration required there...

Re: Revit 2021 DisplayUnitType

jeremytammik — Sat, 10 Oct 2020 14:12:22 GMT

Yes indeed:

https://thebuildingcoder.typepad.com/blog/2020/04/2021-migration-add-in-language-and-bim360-login.html#4

https://thebuildingcoder.typepad.com/files/tbc_samples_2021_migr_01.txt

CmdDutAbbreviation.cs(37,33,37,48): warning CS0618: 'DisplayUnitType' is obsolete: 'This enumeration is deprecated in Revit 2021 and may be removed in a future version of Revit. Please use the `ForgeTypeId` class instead. Use constant members of the `UnitTypeId` class to replace uses of specific values of this enumeration.'

I'll take a look anon...

Re: Revit 2021 DisplayUnitType

stephen_harrison — Sun, 11 Oct 2020 11:44:55 GMT

Thanks Jeremy

Ill keep working on this but look forward to your solution.

Regards

Stephen

Re: Revit 2021 DisplayUnitType

stephen_harrison — Mon, 19 Oct 2020 13:03:03 GMT

Senior Moment over, thankfully.

Very embarrassing however how simple the solution was!!

//Pre 2021 DisplayUnitType displayUnitType = fp.DisplayUnitType; value = UnitUtils.ConvertFromInternalUnits(nullable.Value, displayUnitType).ToString(); //2021 ForgeTypeId forgeTypeId = fp.GetUnitTypeId(); value = UnitUtils.ConvertFromInternalUnits(nullable.Value, forgeTypeId).ToString();

Regards

Stephen

Re: Revit 2021 DisplayUnitType

jeremytammik — Tue, 20 Oct 2020 08:50:54 GMT

Congratulations on resolving this and thank you for sharing the simple solution.

That motivates me to take a look at the deprecated unit API usage warnings generated by The Building Coder samples...

Re: Revit 2021 DisplayUnitType

jeremytammik — Tue, 20 Oct 2020 09:05:48 GMT

I did it the easy way, commenting out everything that looked complicated, and just handling the trivial cases:

Eliminated deprecated API usage warnings by removing calls to pre-ForgeTypeId unit functionality:

https://github.com/jeremytammik/the_building_coder_samples/compare/2021.0.150.5...2021.0.150.6