--- title: Top 10 errors found in C# projects in 2025 | daily.dev description: PVS-Studio analyzed open-source C# projects throughout 2025 and compiled the top 10 most interesting bugs discovered. The list includes errors like incorrect... canonical: https://daily.dev/posts/ktqci5naj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Top 10 errors found in C# projects in 2025 | daily.dev og:description: PVS-Studio analyzed open-source C# projects throughout 2025 and compiled the top 10 most interesting bugs discovered. The list includes errors like incorrect... og:url: https://daily.dev/posts/ktqci5naj og:image: https://api.daily.dev/og/posts/kTqCi5naj.png og:image:alt: Post cover image 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. # Top 10 errors found in C# projects in 2025 **[Master Yoda](https://daily.dev/sources/biixj2rltcrx7bbvxfw0d)** · [@pump1it](https://daily.dev/pump1it) · 16 upvotes · 0 comments ## Summary PVS-Studio analyzed open-source C# projects throughout 2025 and compiled the top 10 most interesting bugs discovered. The list includes errors like incorrect method calls in switch statements, format string mismatches causing exceptions, flawed Equals implementations, boxing issues with ReferenceEquals on value types, incorrect operator precedence with the null-coalescing operator, pattern matching mistakes, and LINQ deferred execution pitfalls with captured variables. Each error demonstrates common C# programming mistakes that static analysis can catch. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [15 Advanced C\# Mistakes You’re Probably Still Making](https://daily.dev/posts/15-advanced-c-mistakes-you-re-probably-still-making-ctxsuyhsf) · ITNEXT · 36 upvotes · 2 comments - [Open wide: Inspecting LLVM 21 with static analysis](https://daily.dev/posts/open-wide-inspecting-llvm-21-with-static-analysis-g8igvhksx) · C\+\+ · 0 upvotes · 0 comments - [C\# Reflection Anti-Patterns: 8 Mistakes That Will Hurt Your App](https://daily.dev/posts/c-reflection-anti-patterns-8-mistakes-that-will-hurt-your-app-qr3lftmkf) · We Are .NET · 1 upvotes · 0 comments --- Tags: [#.net](https://daily.dev/tags/.net), [#c#](https://daily.dev/tags/c#) [View this post on daily.dev](https://daily.dev/posts/ktqci5naj) ```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":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/ktqci5naj","headline":"Top 10 errors found in C# projects in 2025","text":"Shared: Top 10 errors found in C# projects in 2025","url":"https://daily.dev/posts/ktqci5naj","datePublished":"2025-12-29T08:29:17.427Z","dateModified":"2025-12-29T08:30:00.538Z","author":{"@type":"Person","name":"Master Yoda","url":"https://daily.dev/pump1it","image":"https://media.daily.dev/image/upload/s--QoEA3qeD--/f_auto/v1739976473/avatars/avatar_BiIXJ2RLtCrx7bbvXFw0D","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":2690}},"image":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":16},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/QX3906lva"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/sources/biixj2rltcrx7bbvxfw0d","name":"Master Yoda"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Master Yoda","item":"https://daily.dev/sources/biixj2rltcrx7bbvxfw0d"},{"@type":"ListItem","position":3,"name":"Top 10 errors found in C# projects in 2025"}]} ```