{"id":4526,"date":"2021-06-25T04:17:42","date_gmt":"2021-06-25T04:17:42","guid":{"rendered":"https:\/\/studysection.com\/blog\/?p=4526"},"modified":"2021-06-25T05:33:11","modified_gmt":"2021-06-25T05:33:11","slug":"dependency-injection","status":"publish","type":"post","link":"https:\/\/studysection.com\/blog\/dependency-injection\/","title":{"rendered":"Dependency Injection"},"content":{"rendered":"

It is a software design<\/a> pattern. It allows us to develop loosely coupled code<\/p>\n

Dependency Injection helps in reducing the hard-coded dependencies among the classes by injecting those dependencies at run time instead of design time technically.<\/p>\n

This is used to implement Inversion of Control (IoC)<\/strong> between classes and their dependencies. <\/p>\n

Inversion of Control:<\/h2>\n

Implementation:
\nIt can apply using an interface or an abstract class
\n\"graph\"<\/p>\n

Example Dependency Injection:<\/h3>\n

Interface Ifood
\n{
\nVoid Eat();
\n}<\/code><\/p>\n\n\n\n
Class bread : IFood
\n{
\nPublic void Eat(){
\nconsole.log(\u201cI eat bread\u201d);
\n}
\n}<\/code><\/td>\n		Class butter: IFood
\n{
\nPublic void Eat(){
\nconsole.log(\u201cI eat butter\u201d);
\n}
\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Class Food Controller
\n{
\nIFood _food ;
\nPublic FoodController (IFood food){ \/\/ Constructor Injection
\n_food = food;
\n}
\nPublic void StartEat(){
\n_food.Eat();
\n}
\n}
\nBread b = new bread();
\nFoodcontroller food = new Foodcontroller(b); \/\/ pass object of bread class into main container class<\/code><\/p>\n

LifeCycle of Dependency Injection<\/h3>\n

To implement dependency injection, there are some classes that are participating in DI to configure Dependency injection to decide whether to return a new instance of the service or an existing instance.<\/p>\n

AddTransient<\/strong>
\nThese types of services are created every time they are requested. It works best for lightweight, stateless services.<\/p>\n

AddScoped<\/strong>
\nThese types of services are created once per request.<\/p>\n

AddSingleton<\/strong>
\nThese types of services are created the first time they are requested and every subsequent request will use the same instance.<\/p>\n

Get certification for your knowledge in the fundamentals of Computer functioning by clearing the Computer Certification<\/a> exam conducted by StudySection. After going through this Computer Certification exam, you will be able to evaluate your basic knowledge of computers<\/em><\/small><\/p>\n","protected":false},"excerpt":{"rendered":"

It is a software design pattern. It allows us to develop loosely coupled code Dependency Injection helps in reducing the<\/p>\n","protected":false},"author":1,"featured_media":4527,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[672,673],"acf":[],"yoast_head":"\nDependency Injection Reduction - StudySection Blog<\/title>\n<meta name=\"description\" content=\"Dependency Injection helps in reducing the hard-coded dependencies among the classes by injecting those dependencies at run time\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/studysection.com\/blog\/dependency-injection\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dependency Injection Reduction - StudySection Blog\" \/>\n<meta property=\"og:description\" content=\"Dependency Injection helps in reducing the hard-coded dependencies among the classes by injecting those dependencies at run time\" \/>\n<meta property=\"og:url\" content=\"https:\/\/studysection.com\/blog\/dependency-injection\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog Posts on famous people, innovations and educational topics\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/studysection\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-25T04:17:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-06-25T05:33:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/studysection.com\/blog\/wp-content\/uploads\/2021\/06\/dependency.png\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin-studysection-blog\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@studysection\" \/>\n<meta name=\"twitter:site\" content=\"@studysection\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin-studysection-blog\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/studysection.com\/blog\/dependency-injection\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/studysection.com\/blog\/dependency-injection\/\"},\"author\":{\"name\":\"admin-studysection-blog\",\"@id\":\"https:\/\/studysection.com\/blog\/#\/schema\/person\/db367e2c29a12d1808fb1979edb3d402\"},\"headline\":\"Dependency Injection\",\"datePublished\":\"2021-06-25T04:17:42+00:00\",\"dateModified\":\"2021-06-25T05:33:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/studysection.com\/blog\/dependency-injection\/\"},\"wordCount\":195,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/studysection.com\/blog\/#organization\"},\"keywords\":[\"Dependency\",\"Graph\"],\"articleSection\":[\"Learn and Grow\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/studysection.com\/blog\/dependency-injection\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/studysection.com\/blog\/dependency-injection\/\",\"url\":\"https:\/\/studysection.com\/blog\/dependency-injection\/\",\"name\":\"Dependency Injection Reduction - 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