Transient lifetime
A transient lifetime is a dependency-injection policy that creates a new service instance each time the service is requested or resolved.
ASP.NET Core in Action, 3e
A transient lifetime is a dependency-injection lifetime policy that creates a new service instance each time the service is requested.
- How it is used
- Uses transient registration for lightweight, mostly stateless services that should never be reused across dependency requests.
- How deep it goes
- Explains instance creation within dependency graphs, object volume, manual scopes, and lifetime safety, but stops short of container internals.
- Examples
- Demonstrates unique DataContext and Repository instances through AddTransient registrations, RowCount values, an endpoint handler, and repeated API calls.
- What you can do after
- Operate/configure it through ASP.NET Core AddTransient registrations and diagnose incorrect root-container resolution or lifetime capture.
Read how ASP.NET Core in Action, 3e explains transient lifetime →
.NET MAUI in Action
A transient scope is a dependency-injection lifetime in which a new service instance is created each time the service is requested.
- How it is used
- Registers pages and view models that should be newly created whenever dependency injection resolves them.
- How deep it goes
- Explains lifetime trade-offs, navigation expectations, state concerns, and the AddTransient registration step.
- Examples
- Demonstrates transient registration with LoginPage in MauiProgram.cs and compares it with Shell-managed pages and singleton services.
- What you can do after
- Operate/configure .NET MAUI dependency injection by registering a page with AddTransient and selecting lifetimes by navigation and state needs.
Related concepts
- ASP.NET Coreused by · ASP.NET Core is Microsoft’s cross-platform, open-source framework for building web applications and services on the .NET platform.
- servicekind of · A service is an application component that provides defined capabilities to other components through an interface.
- service lifetimekind of · A service lifetime is a dependency-injection rule that determines when service instances are created, how long they are retained, and when they are disposed.
- Invoke methodused by · Invoke is the conventional ASP.NET Core middleware method that processes an HTTP request and can receive dependencies through its parameters.
- dependency graphproduces · A dependency graph is a graph whose nodes represent entities and whose edges represent dependency relationships among them.
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