Get or Set Global Parameter Group

[SamBerk]

Hi all,

Is there a way to get or set a global parameter under a group through the api?

[jeremytammik]

Dear Sam,

Thank you for your query.

Please look at:

• The section on Global Parameters in What's New in the Revit 2017 API:   https://thebuildingcoder.typepad.com/blog/2016/04/whats-new-in-the-revit-2017-api.html#3.6.1
• Deleting a Global Parameter:
  https://thebuildingcoder.typepad.com/blog/2017/11/deleting-a-global-parameter-and-revitpythonshell.h...
• Paul Aubin's presentation that made it to the Best AU Speakers in Las Vegas 2017 on Global Parameters, Global Control: Revit Global Parameters in Practice:
  https://thebuildingcoder.typepad.com/blog/2018/01/autodesk-university-past-and-future.html#2
  http://au.autodesk.com/au-online/classes-on-demand/class-catalog/classes/year-2017/revit/as121828

Please let us know how you end up solving this.

Thank you!

Best regards,

Jeremy

[SamBerk]

Thanks, @jeremytammik for your respond

Let me better explain my question.

When I create a global parameter from the UI I have an option to set the parameter under a group

But from the API, I don't have this option

So my question is, is it possible to get or set this information from the API?

[jeremytammik]

Dear Sam,

Thank you for your appreciation and explanation.

I see the problem.

I have asked the development team for advice.

Best regards,

Jeremy

[jeremytammik]

Dear Sam,

Thank you for your patience.

The development team replied:

It looks as if that currently it is not possible. The method exists internally, but it's not exposed to the public API. We compute an appropriate group when you create a global parameter based on the input ParameterType::Enum datatype.

It would not be a large effort to expose this for the next major release of Revit. However, the managers have to approve this modification first.

Best regards,

Jeremy

[SamBerk]

Thanks for your help

[SamBerk · Accepted solution]

Hi 

It's interesting but I found that it is actually possible to do it now.

GlobalParameter globalParameter = (GlobalParameter)DbApp.Document.GetElement(paramId);

// get
BuiltInParameterGroup group = globalParameter.GetDefinition().ParameterGroup;

// set
globalParameter.GetDefinition().set_ParameterGroup(BuiltInParameterGroup.PG_VISIBILITY);

Thanks

[jeremytammik]

Dear Sam,

Wow, yes, interesting indeed!

Thank you for letting us know!

Yet once again, the Revit API add-in developer community discovers a possibility that the development team is not aware of.

Best regards,

Jeremy

[ahmedaelbary]

Dear @SamBerk and @jeremytammik,

How could you access GlobalParameter.GetDefinition().set_ParameterGroup()?

As per my experiment, I had the error highlighted below;

'Autodesk.Revit.DB.InternalDefinition.ParameterGroup.set': cannot explicitly call operator or accessor (CS0571) 

I am looking for your kind advice.

Thanks in advance.

[whp.m.owens]

Hi there!

Care to take the time to show me how to implement this in my script?

I have about 70 Parameters I need to send to a different parameter group.

Cheers,

Matt