Muhammad Waseem’s Post

💡𝐃𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐜𝐲 𝐈𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧 𝐢𝐧 .𝐍𝐄𝐓 Dependency injection involves providing a class with its required dependencies from an external source rather than having the class create them itself. This helps to decouple the object creation process from the caller, leading to a more modular and flexible system. In other words, it allows a class to focus on its core functionality rather than worrying about how to create and manage its dependencies. 𝐖𝐡𝐲 𝐝𝐨 𝐰𝐞 𝐧𝐞𝐞𝐝 𝐝𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐜𝐲 𝐢𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧? By using DI classes are decoupled from each other so you make changes at one place and it is reflected all over the places. 𝐇𝐨𝐰 𝐭𝐨 𝐢𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭 𝐝𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐜𝐲 𝐢𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧? ✅ In .NET 6 we implement DI in Program.cs class by using builder.Services ✅ For previous versions of .NET, to implement DI we need to add the service in “ConfigureServices” method which is in Startup.cs file 𝐃𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 𝐰𝐚𝐲𝐬 𝐨𝐟 𝐢𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐢𝐧𝐠 𝐃𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐜𝐲 𝐈𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧 There are three ways of doing DI: 1.Scoped ➡️ It will create an instance per scope, if we are in same scope same instance would be used. Whenever we go out of scope new instance would be created. 2. Transient ➡️ It creates new instances every time its injected. 3. Singleton ➡️ It instantiates one global object for all requests coming to the server from any user. 𝐁𝐞𝐧𝐞𝐟𝐢𝐭𝐬 𝐨𝐟 𝐃𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐜𝐲 𝐈𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧 1.Improved testability: Dependency injection makes it easier to write unit tests for your code, as you can easily substitute mock objects for the real dependencies. 2. Enhanced flexibility: By injecting dependencies from the outside, you can easily change the implementation of a class's dependencies without having to modify the class itself. This makes it easier to adapt your application to changing requirements. 3. Increased modularity: Dependency injection encourages the use of small, single-purpose classes that are easy to test and reuse in different contexts. This can lead to a more modular and maintainable codebase. 4. Better separation of concerns: Dependency injection helps to separate the concerns of different parts of your application, making it easier to understand and maintain the code. 5. Enhanced decoupling: Dependency injection promotes loose coupling between classes, which can make your application more resilient to change and easier to test. 📩If you like my posts you might be interested in my weekly Dotnet Newsletter where I send an actionable tip on every Saturday , Subscribe https://lnkd.in/dNHxJGRG .#dotnetcore #dotnet #csharp #dependencyinjection #di #dependency #singletondependency #scopedependency