Custom Activity Creator - How to pass in parameter collections

I have seen many Activity Creator examples, but they all pass in scalar parameters. How do I create an activity that collects and passes in an object collection? I need to mimic that “parameters” input in the UIPath Database Activities exactly, except with the “Parameter Type” dropdown should have my own list of choices. I have not been able to find any examples that take collections as a parameter.

Did you get any solution for this? Kindly let me know.

I believe the activity creator only supports a set of limited canned data types via the GUI. You should be able to change them to whatever you like in C# from inside your activities’ code.


Also I think the activity creator locks you into .NET Framework. If you want to create components for .NET 6.0+ you might want to give the HelloActivity template a try here: