.NET 6 Activity System.Activities not found

I Try to make a super simple activity in .NET 6., using CodeActivity.
When I try to import the pckage to Studion it fails with the error: Could not load assembly System.Activities.dll.

I have tried a number of different ways to reference the UiPath workflow packages, and even tried to import the dll directly - all to no success.
In .csproj I have:

<PackageReference Include=UiPath.Workflow Version=6.0.3/>
<PackageReference Include=UiPath.Workflow.Runtime Version=6.0.3 >

The activity is a simple code activity:
[Category(“Company.Stuff”)]
public class TheStuff : CodeActivity {

I’ve tried to follow this but it does not seem up to date.
Migrating Activities to .NET 6 (uipath.com)

I have tried nuget pack with nuspec file, and dotnet pack on the project.

UiPath Studio 22.7 (and previous versions)
Visual Studio 2022

1 Like

Hello @Jesper_Rasmussen!

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Hi Rasmus,

I have exactly the same problem and have been struggling for quite a long time now.

There doesn’t seem to be any updated documentation of how to manage to create
a .Net6 activity.

Did you find a solution or if you do in the nearby future, I would very much appreciate if you post an update here.

//Peter

Hi! I don’t do full-on software development. Instead, I build automations and internal web and desktop apps to help finance and make some of their business processes easier. We’re a fully Microsoft shop, all windows servers and clients. I’ve always just used .net framework when starting a new app since that’s just what I’ve always done. I’m not aware of any plans in the future to migrate our environment from Microsoft to something else.

I think you ment to reply to something else :wink: