topic Whats the deal with get_Parameter()? (insert Seinfeld Bassline here) in Revit API Forum

Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

justin.wolters — Fri, 24 Mar 2023 18:36:54 GMT

This is more of a request for a history lesson here about the Revit api, but whats the deal with the method get_Parameter()? I've seen it used in past forum posts for use in Revit versions before 2022, but I don't see any references to it in the revitapidocs. Does anyone know where it stems from (the API, another API, the enchanted jungle of BIM?) and if still a valid method to use today in leau of GetParameter() method (seems far easier to just use get_Parameter with a GUID vs GetParameter.

Thanks!

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

jeremy_tammik — Fri, 24 Mar 2023 19:13:54 GMT

Hi.

Sorry that I do not feel motivated to answer this in full.

I addressed the exact same question here in the forum recently. So, all you get is the short version:

https://duckduckgo.com/?q=.net+get_+property+prefix

Please figure it out yourself from there, or search for the previous answer to the same question.

Happy weekend!

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

jeremy_tammik — Fri, 24 Mar 2023 19:15:45 GMT

I made the effort of searching for the previous answer as well.

Since it has come up twice in a row, I guess I'll add it to the blog anon.

Here it is:

https://forums.autodesk.com/t5/revit-api-forum/importinstance-geometry-vs-get-geometry/m-p/11720577

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

jeremy_tammik — Fri, 24 Mar 2023 19:18:36 GMT

Oh, and to wrap up: what is the Seinfeld bassline, please?

Later: I guess it is common knowledge, just not to me:

https://youtu.be/RH2Wz9MqqGI

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

justin.wolters — Fri, 24 Mar 2023 19:23:04 GMT

Thanks for the link(s) @jeremy_tammik. those helped figure it out!

As for the Seinfeld bassline bit, that was my poor attempt at humor :).

Have a good weekend as well!

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

Sean_Page — Fri, 24 Mar 2023 20:06:06 GMT

There is a reference to it here in the older literature. (and New)

https://www.revitapidocs.com/2020/0cf342ef-c64f-b0b7-cbec-da8f3428a7dc.htm

I think this dates back a long ways including references in 2010...

https://thebuildingcoder.typepad.com/blog/2010/08/get-element-type.html

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

RPTHOMAS108 — Sat, 25 Mar 2023 13:29:16 GMT

This is not the same. It isn't an API design choice it is just calling an underlying method because C# can't use indexed properties.

Every indexed property has an underlying method in MSIL to retrieve the value these are prefixed 'get_' . So to avoid the indexed property issue C# uses the underlying method directly instead.

Note that in above example 'RowKey' has no 'set_RowKey' because it is ReadOnly.

Re: Whats the deal with get_Parameter()? (insert Seinfeld Bassline here)

Sean_Page — Sat, 25 Mar 2023 14:10:19 GMT

Thanks for the clarification @RPTHOMAS108 !