--- title: SOLID Principles C# Guide: Complete Reference for .NET 10 description: A comprehensive reference guide covering all five SOLID principles (SRP, OCP, LSP, ISP, DIP) with C# code examples showing violations and compliant... canonical: https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: SOLID Principles C# Guide: Complete Reference for .NET 10 | daily.dev og:description: A comprehensive reference guide covering all five SOLID principles (SRP, OCP, LSP, ISP, DIP) with C# code examples showing violations and compliant... og:url: https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s og:image: https://api.daily.dev/og/posts/u0471bG9s.png og:image:alt: SOLID Principles C# Guide: Complete Reference for .NET 10 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # SOLID Principles C# Guide: Complete Reference for .NET 10 **[We Are .NET](https://daily.dev/sources/wearedotnet)** · 15 min read · 4 upvotes · 0 comments ## Summary A comprehensive reference guide covering all five SOLID principles (SRP, OCP, LSP, ISP, DIP) with C# code examples showing violations and compliant implementations. Each principle is illustrated with a concrete bad example and a corrected version. The guide also explains how the principles interact as a system, how modern .NET 10 features like records, built-in DI, and ASP.NET Core middleware support SOLID design, and includes an FAQ addressing common questions about applying SOLID in practice. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [SOLID Violations C\#: How to Recognize and Fix Each One](https://daily.dev/posts/solid-violations-c-how-to-recognize-and-fix-each-one-jb3sdnwow) · We Are .NET · 0 upvotes · 0 comments - [What SOLID Still Teaches Ruby Programmers](https://daily.dev/posts/what-solid-still-teaches-ruby-programmers-24ppwefj9) · RUBYLAND · 0 upvotes · 0 comments --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#.net](https://daily.dev/tags/.net), [#c#](https://daily.dev/tags/c#), [#dependency-injection](https://daily.dev/tags/dependency-injection) [View this post on daily.dev](https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"SOLID Principles C# Guide: Complete Reference for .NET 10","url":"https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s"},"datePublished":"2026-06-10T21:56:19.729Z","dateModified":"2026-06-10T21:56:39.555Z","description":"A comprehensive reference guide covering all five SOLID principles (SRP, OCP, LSP, ISP, DIP) with C# code examples showing violations and compliant...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4e71f4b0084df2dc8605d147c19a8345?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4e71f4b0084df2dc8605d147c19a8345?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"We Are .NET","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"We Are .NET","logo":"https://media.daily.dev/image/upload/s--BsnVOa3i--/f_auto/v1718347410/logos/wearedotnet","url":"https://daily.dev/sources/wearedotnet"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/solid-principles-c-guide-complete-reference-for-net-10-u0471bg9s","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"general-programming,.net,c#,dependency-injection","timeRequired":"PT15M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"We Are .NET","item":"https://daily.dev/sources/wearedotnet"},{"@type":"ListItem","position":3,"name":"SOLID Principles C# Guide: Complete Reference for .NET 10"}]} ```