CODEWITHSUNDEEP
entity-framework-coreuipathuipath-activity
Maryam
Maryam

Reputation: 515

Cannot load Assembly while installing package in uipath

I've created a custom activity in Visual studio using UiPath Activity Creator. In this activity I'm working with Entity Framework core and connecting with database. I published my project successfully and when I try to install this package in UiPath It says following package cannot be installed and showed following error in logs:

Cannot load assembly: C:\Users\maryum.siddique.nuget\packages\MyActivity.Test.activities/0.1.0.629111039\lib/net461/Microsoft.EntityFrameworkCore.dll : System.TypeLoadException: Method 'DisposeAsync' in type 'Microsoft.EntityFrameworkCore.DbContext' from assembly 'Microsoft.EntityFrameworkCore, Version=3.1.5.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' does not have an implementation.

I have no idea what's the issue. Can anyone help with this?

Upvotes: 1

Views: 3162

Answers (2)

Daniel Xav De Oliveira
Daniel Xav De Oliveira

Reputation: 428

I too experienced this error. It is due to the wrong library being selected when you created your project.

In order to fix it make sure you follow the steps:

  1. Create a new project on Visual Studio
  2. Select C# from the language drop-down
  3. Select Library from the project type drop-down
  4. Choose - Class Library (.NET Framework)

However I suggest you make use of the UI path create activity extension to make a UiPath Standard Activity Project.

Upvotes: 0

Uuuuuumm
Uuuuuumm

Reputation: 657

I experienced this same error. If you are making this library in visual studio, make sure that the library is a .net framework project, NOT a .net core project.

From my experience UiPath does not like .net core.

I'm not sure why, but it fixed my issue.

Upvotes: 0

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