Cezary Walenciuk Profile picture
Writing about C# and .NET My Friend

Jan 25, 2022, 6 tweets

Let's see🤔

How can you control life cycle of injected elements in ASP..NET Core DI Container?

We have three live cycles:
➡️ Singleton
➡️ Scoped
➡️ Transient

How do they work? Here is the thread 🧵👇 with the demo and code

#dotnet #csharp #devcommunity

Do to the demo, we need to create an interface per life cycle option.

An implementation of that interface will return a unique ID.
New ID means that element was recreated

We need a class that will represent a service layer that will be created in Controller.

We need to do this to see how "Scoped" and "Transient" life cycles are working

Here is the Controller

We're going to inject all interfaces🧪

But each interface will have different life cycle according to the name of that interface

In Program.cs we're setting up DI Container and all life cycles

As we can see:

➡️Singleton will always have the same ID. We will never recreate that object

➡️Scoped will have the same ID and object till next request

➡️Transient will always create new object when is needed

See you soon in the next thread about life cycles in Middleware

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