topic My first revit plugin help Lesson 1 in Revit API Forum

My first revit plugin help Lesson 1

Nathan.HilsonN67V6 — Thu, 20 Jan 2022 01:40:54 GMT

Can anybody give quick insight on why this isn't recognizing? Followed all the steps but won't recognize "Execute".

Re: My first revit plugin help Lesson 1

Kevin.Lawson.PE — Thu, 20 Jan 2022 03:30:41 GMT

Hi Nathan, welcome to the Revit API, your life will never be the same.

If you hover over the error and rest the mouse, Intellisense will pop up an error description.

There's also an "Error List" tab on the bottom pane that will give you more info about the error. Post those and we can be of more help.

My guess is that you are not returning a value. Make sure all code "paths" return Result.Succeeded or Result.Failed.

Re: My first revit plugin help Lesson 1

Nathan.HilsonN67V6 — Thu, 20 Jan 2022 12:08:59 GMT

Thanks Kevin. I posted the snippets below.

Re: My first revit plugin help Lesson 1

Kevin.Lawson.PE — Thu, 20 Jan 2022 14:27:58 GMT

I was right! "Not all code paths return a value"

The class "Execute" is expecting a "Result" to be returned. You need to have a "return Result.Succeeded" statement at the end of the Execute code.

public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements) { //do whatver the code does return Result.Succeeded; }

Re: My first revit plugin help Lesson 1

Nathan.HilsonN67V6 — Thu, 20 Jan 2022 14:42:31 GMT

Thanks. You just saved me a ton of time trying to do more research. Everything I found online kept saying I was missing a reference.

Re: My first revit plugin help Lesson 1

Kevin.Lawson.PE — Thu, 20 Jan 2022 17:15:48 GMT

That was my first inclination as well, but you would have had a lot more errors if you were missing a reference.