--- title: ASP.NET 3.5 Extensions CTP preview released | daily.dev description: Microsoft released a CTP preview of ASP.NET 3.5 Extensions, bundling several new additions: AJAX improvements including browser history support, the new... canonical: https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ASP.NET 3.5 Extensions CTP preview released | daily.dev og:description: Microsoft released a CTP preview of ASP.NET 3.5 Extensions, bundling several new additions: AJAX improvements including browser history support, the new... og:url: https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh og:image: https://api.daily.dev/og/posts/b2fmxkwNh.png og:image:alt: ASP.NET 3.5 Extensions CTP preview released 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. # ASP.NET 3.5 Extensions CTP preview released **[Maarten Balliauw](https://daily.dev/sources/maartenballiauw)** · 1 min read · 0 upvotes · 0 comments ## Summary Microsoft released a CTP preview of ASP.NET 3.5 Extensions, bundling several new additions: AJAX improvements including browser history support, the new ASP.NET MVC framework, Dynamic Data Support for faster data-driven app building, Silverlight support, and ADO.NET data services (codename Astoria). The author plans to test the release during the week and share findings. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is included in the ASP.NET 3.5 Extensions CTP release? The ASP.NET 3.5 Extensions CTP bundles five major additions: ASP.NET AJAX improvements (including browser back-forward history support and JavaScript library enhancements), the new ASP.NET MVC framework, ASP.NET Dynamic Data Support for faster data-driven app development, ASP.NET Silverlight support, and ADO.NET data services, codenamed 'Astoria'. _Developers evaluating early ASP.NET MVC and Dynamic Data previews can follow release details like this on daily.dev._ ## Similar posts on daily.dev - [Microsoft Releases .NET 11 Preview 6 With Language and Framework Updates](https://daily.dev/posts/microsoft-releases-net-11-preview-6-with-language-and-framework-updates-oqwjdzv3l) · InfoQ · 6 upvotes · 0 comments - [htmxRazor v2.0.0: Platform and DX - Chris Woody Woodruff](https://daily.dev/posts/htmxrazor-v2-0-0-platform-and-dx---chris-woody-woodruff-gyh7wczzb) · We Are .NET · 0 upvotes · 0 comments - [Microsoft Releases .NET 11 Preview 3 with Updates Across Runtime, SDK, MAUI, and ASP.NET Core](https://daily.dev/posts/microsoft-releases-net-11-preview-3-with-updates-across-runtime-sdk-maui-and-asp-net-core-4tyjhbtqm) · InfoQ · 5 upvotes · 1 comments --- Tags: [#.net](https://daily.dev/tags/.net) [View this post on daily.dev](https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh) ```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":"ASP.NET 3.5 Extensions CTP preview released","url":"https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh"},"datePublished":"2026-10-04T13:06:24.495Z","dateModified":"2026-10-04T13:14:48.505Z","description":"Microsoft released a CTP preview of ASP.NET 3.5 Extensions, bundling several new additions: AJAX improvements including browser history support, the new...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9abe1ba7e80363eda1a33cdb41b08267?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9abe1ba7e80363eda1a33cdb41b08267?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Maarten Balliauw","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":"Maarten Balliauw","logo":"https://media.daily.dev/image/upload/s--rOTg3VYO--/f_auto,q_auto/v1791119043/logos/maartenballiauw?_a=BAMAMicg0","url":"https://daily.dev/sources/maartenballiauw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":".net","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Maarten Balliauw","item":"https://daily.dev/sources/maartenballiauw"},{"@type":"ListItem","position":3,"name":"ASP.NET 3.5 Extensions CTP preview released"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/asp-net-3-5-extensions-ctp-preview-released-b2fmxkwnh#faq","mainEntity":[{"@type":"Question","name":"What is included in the ASP.NET 3.5 Extensions CTP release?","acceptedAnswer":{"@type":"Answer","text":"The ASP.NET 3.5 Extensions CTP bundles five major additions: ASP.NET AJAX improvements (including browser back-forward history support and JavaScript library enhancements), the new ASP.NET MVC framework, ASP.NET Dynamic Data Support for faster data-driven app development, ASP.NET Silverlight support, and ADO.NET data services, codenamed 'Astoria'. Developers evaluating early ASP.NET MVC and Dynamic Data previews can follow release details like this on daily.dev."}}]} ```