TryParse is your friend
Using the power of the framework to avoid reinventing the wheel
Blogs
Multiple Ways to Register Your Dependencies with ASP.NET Core 3
Exploring the multiple ways you can register your service dependencies with the new IHost found in ASP.NET Core 3 (Preview).
Registering Services with DotNet Worker Project
How to register services and dependencies in the new dotnet core worker project
Beyond Basics - ASP.Net Core Using the Decorator Pattern
Refactoring to use the Decorator Design Pattern to help apply the Single Responsibility Principle.
Beyond Basics - ASP.Net Core Adding and Using Configuration
Adding strongly typed configuration settings and injected them through dependency injection.