Hands-On Design Patterns with C# and .NET Core

Scoped

In .Net Core, there is the concept of a scope, which can be thought of as a context or boundary for the executing process. In some .Net Core implementations, the scope is implicitly defined, so you might not be aware that it is being put in place. For example, in ASP.Net Core, a scope is created for each web request that is received. This means that, if a dependency has a Scoped lifetime, then it will only be constructed once per web request, so, if the same dependency is used multiple times for the same web request, it will be shared.

Later in this chapter, we will explicitly create a scope in order to illustrate a Scoped lifetime, and the same concept applies in the unit test as it will in an ASP.Net Core application.