.net core 3 Problem while registering ApplicationDbContext for dependency injection

Question

when i register other services it work like services.AddSingleton<GeneratingData, GeneratingData>() but when i add services.AddSingleton<ApplicationDbContext, ApplicationDbContext>(); it does work this error shows up

enter image description here this is the code i write in startup file adding ApplicationDbContext for dependency injection

Screenshots of code or error messages aren't accepted here. Please edit the code and messages into your question. — Ian Kemp, Feb 05 '20 at 13:40
Welcome to Stack Overflow. Read the [tour] and [ask]. Start by reading the error message and researching it. — CodeCaster, Feb 05 '20 at 13:50

JOSEFtw · Accepted Answer · 2020-02-05T13:54:24.053

0

You are trying to inject a scoped service (ApplicationDbContext) in a singleton, that is not allowed since it will basically be captured as a singleton. If you want to use the DbContext, you will need to register the class that are going to use it as Scoped or Transient instead of Singleton

edited Feb 05 '20 at 13:54

answered Feb 05 '20 at 13:48

JOSEFtw

9,781
9
49
67

Thank you it worked. bye the way how to know which service scoped or singleton? – Zubair Khakwani Feb 05 '20 at 13:56

.net core 3 Problem while registering ApplicationDbContext for dependency injection

1 Answers1