topic Re: Get a list of ParameterGroups in R2025 API in Revit API Forum

Get a list of ParameterGroups in R2025 API

Extraneous — Thu, 25 Apr 2024 12:59:26 GMT

I need to get a list BuiltInParameterGroups to show these in a dialog window.

In the previous Revit API versions I used this:

List<BuiltInParameterGroup> groups = Enum.GetValues(typeof(BuiltInParameterGroup)).Cast<BuiltInParameterGroup>().ToList();

How to do the same in Revit API 2025? GroupTypeId isn't Enum and I don't see how to get all possible values.

Re: Get a list of ParameterGroups in R2025 API

jeremy_tammik — Thu, 25 Apr 2024 13:31:40 GMT

You can use .NET Reflection to iterate over all the members of the GroupTypeId class:

Re: Get a list of ParameterGroups in R2025 API

Mohamed_Arshad — Thu, 25 Apr 2024 13:37:35 GMT

Привет @Extraneous

As @jeremy_tammik told, We use typeof keyword from Reflection to extract the property information. Kindly check the below sample code snippet for reference.

Reference Code:

///Get all Parameter Group Value in List List<PropertyInfo> propertiesInfo = typeof(GroupTypeId).GetProperties().ToList(); Dictionary<ForgeTypeId, string> builtInParameterNames = new Dictionary<ForgeTypeId, string>(); ///To Get all BuiltInParameter Group Names foreach (PropertyInfo property in propertiesInfo) { builtInParameterNames.Add(property.GetValue(property)as ForgeTypeId, property.Name); }

Спасибо 🙂 Hope this Helps 🙂

Re: Get a list of ParameterGroups in R2025 API

Mohamed_Arshad — Thu, 25 Apr 2024 13:41:20 GMT

Привет @Extraneous

As @jeremy_tammik told we can use the typeof from Reflection namespace. Kindly check the below code snippet for reference.

Reference Code:

Hope this Helps 🙂

Re: Get a list of ParameterGroups in R2025 API

eN27 — Thu, 25 Apr 2024 17:14:10 GMT

Reflection is not needed, since Revit 2022 there is a static method that returns all available GroupTypeId Members :

IList<ForgeTypeId> ParameterUtils.GetAllBuiltInGroups()

There is a lot of static methods in the API that facilitate working with ForgeTypeId and the best way to discover them is through RDBE:

Re: Get a list of ParameterGroups in R2025 API

Mohamed_Arshad — Thu, 25 Apr 2024 17:53:15 GMT

HI @Extraneous @eN27 @jeremy_tammik

@eN27 Thank you for the Suggestion, I make a summary of complete Query Thread. To extract the List of ForgeTypeId Class from GroupTypeId Class .

Suggestion-01
@jeremy_tammik and me suggested to use System.Reflection Namespace | Microsoft Learn from .NET. Kindly refer the below code snippet for additional reference.

Suggestion-01 Sample Code Snippet

Suggestion-02

@eN27 suggested to use Revit API's In-Built GetAllBuiltInGroups Method. Kindly refer the below code snippet for additional reference.

Suggestion-02 Sample Code Snippet

///Get all Parameter Group Value in List var groupIds= ParameterUtils.GetAllBuiltInGroups(); Dictionary<ForgeTypeId, string> builtInParameterNames = new Dictionary<ForgeTypeId, string>(); ///To Get all BuiltInParameter Group Names foreach (ForgeTypeId groupId in groupIds) { builtInParameterNames.Add(groupId, LabelUtils.GetLabelForGroup(groupId)); }

Hope this Helps 🙂

Re: Get a list of ParameterGroups in R2025 API

Extraneous — Thu, 25 Apr 2024 20:36:32 GMT

Thank you @eN27 , it's exactly what I need.

Unfortunately Static methods aren't so usable because you won't find it if you didn't know about it already. I think API is heading somewhere in the wrong direction with this "forge id" idea. It seem even Jeremy forgot about this ParameterUtils and recommended to use Reflection. Bruh...