How to read Project Parameters?

We need to get that list of loaded parameters inside the project and check if out parameter names are included or not.

We need to get Parameter Bindings Map in Revit API with this code:

Keep in mind, that it's a bit tricky to work with, because you need to use ForwardIterator to get items from it. You can't treat it like a regular list or other containers.

Forward Iterator

A ForwardIterator in the Revit API is like a one-way list reader. It lets you go through items in a collection one at a time, starting from the first item and moving forward, but you can't go backward or skip around.

It's used in API to be as efficient as possible in terms of memory handling.

Here is a code example of how to get ForwardIterator and grab all parameter definitions and read their names.

Keep in mind that you get Definitions

• A Parameter Definition describes the parameter's rules and structure, like its name ("Height"), type (Length), and other things... It's the template used by elements.

• A Parameter is what every element have based on the definition and it can have different values across all elements.

Check if Parameter Loaded

Lastly, once you have a list of loaded parameter names, it's quick and easy to check what is loaded or not.

Here is how

Final Snippet

In conclusion, let's put it all together in a single snippet.

I know that it looks confusing to use ForwardIterators, but you can just copy this code and make a function out of it.

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Let me know if you want to learn more about Shared Parameters in Revit API and what exactly you want to learn.

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