{"id":2017,"date":"2025-05-13T19:12:14","date_gmt":"2025-05-13T19:12:14","guid":{"rendered":"https:\/\/rssfeedtelegrambot.bnaya.co.il\/index.php\/2025\/05\/13\/net-10-preview-4-is-now-available\/"},"modified":"2025-05-13T19:12:14","modified_gmt":"2025-05-13T19:12:14","slug":"net-10-preview-4-is-now-available","status":"publish","type":"post","link":"https:\/\/rssfeedtelegrambot.bnaya.co.il\/index.php\/2025\/05\/13\/net-10-preview-4-is-now-available\/","title":{"rendered":".NET 10 Preview 4 is now available!"},"content":{"rendered":"<p>Today, we are excited to announce the <strong>fourth<\/strong> preview release of .NET 10 with enhancements across the .NET Runtime, SDK, libraries, C#, ASP.NET Core, Blazor, .NET MAUI, and more. Check out the full release notes linked below and get started today.<\/p>\n\n<div class=\"d-flex justify-content-left\"><a class=\"cta_button_link btn-primary mb-24\" href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet\/10.0\" target=\"_blank\">Download .NET 10 Preview 4<\/a><\/div>\n<p>This release contains the following improvements.<\/p>\n<h2><strong>Libraries<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/libraries.md#add-out-of-proc-trace-support-for-activity-events-and-links\">Add Out-of-Proc Trace Support for Activity Events and Links<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/libraries.md#rate-limiting-trace-sampling-support\">Rate Limiting Trace Sampling Support<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/libraries.md#new-async-zip-apis\">New async Zip APIs<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/libraries.md#performance-improvement-in-gzipstream-for-concatenated-streams\">Performance improvement in GZipStream for concatenated streams<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/libraries.md\">Full Release Notes<\/a><\/p>\n<h2><strong>Runtime<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/runtime.md#escape-analysis-for-local-struct-fields\">Escape Analysis for Local Struct Fields<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/runtime.md#inlining-improvements\">Inlining Improvements<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/runtime.md\">Full Release Notes<\/a><\/p>\n<h2><strong> SDK<\/strong><\/h2>\n<p>No new features added in this preview release.<\/p>\n<h2><strong>C#<\/strong><\/h2>\n<p>No new features added in this preview release.<\/p>\n<h2><strong>F#<\/strong><\/h2>\n<p>This release you will find updates across the <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/fsharp.md#f-language\">F# language<\/a>, <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/fsharp.md#fsharpcore-standard-library\">FSharp.Core standard library<\/a>, and <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/fsharp.md#fsharpcompilerservice\">FSharp.Compiler.Service<\/a>.<\/p>\n<h2><strong>Visual Basic<\/strong><\/h2>\n<p>No new features added in this preview release.<\/p>\n<h2><strong> ASP.NET Core &amp; Blazor<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#json-patch-with-systemtextjson\">JSON Patch with System.Text.Json<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#minimal-api-validation-for-record-types\">Minimal API validation for record types<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#generate-openapi-schemas-in-transformers\">Generate OpenAPI schemas in transformers<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#improved-openapi-xml-documentation-support\">Improved OpenAPI XML documentation support<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#access-the-openapi-document-with-iopenapidocumentprovider\">Access the OpenAPI document with IOpenApiDocumentProvider<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#openapinet-updated-to-preview17\">OpenAPI.NET updated to Preview.17<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#javascript-interop-for-constructors-and-properties\">JavaScript interop for constructors and properties<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#reference-a-javascript-function-with-ijsobjectreference\">Reference a JavaScript function with IJSObjectReference<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#blazor-webassembly-runtime-diagnostics\">Blazor WebAssembly runtime diagnostics<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#signal-not-found-responses-using-navigationmanager\">Signal Not Found responses using NavigationManager<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#navigationmanagernavigateto-no-longer-throws-a-navigationexception\">NavigationManager.NavigateTo no longer throws a NavigationException<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#quickgrid-method-closecolumnoptionsasync-renamed-to-hidecolumnoptionsasync\">QuickGrid method CloseColumnOptionsAsync renamed to HideColumnOptionsAsync<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#writeimportmaptohtml-renamed-to-overridehtmlassetplaceholders\">WriteImportMapToHtml renamed to OverrideHtmlAssetPlaceholders<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#preload-blazor-framework-static-assets\">Preload Blazor framework static assets<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#blazor-webassembly-standalone-app-template-updates\">Blazor WebAssembly Standalone App template updates<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#blazor-boot-manifest-merged-into-dotnetjs\">Blazor boot manifest merged into dotnet.js<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md#use-webapplicationfactory-with-kestrel-for-integration-testing\">Use WebApplicationFactory with Kestrel for integration testing<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/aspnetcore.md\">Full Release Notes<\/a><\/p>\n<h2><strong> .NET MAUI<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/dotnetmaui.md#mediapicker-modernization\">MediaPicker modernization<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/dotnetmaui.md#nullable-pickers\">Nullable Pickers<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/dotnetmaui.md\">Full Release Notes<\/a><br \/>\nFull list of quality improvements on <a href=\"https:\/\/github.com\/dotnet\/maui\/releases\/\">dotnet\/maui GitHub releases<\/a>.<\/p>\n<h3><strong> .NET for Android<\/strong><\/h3>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/dotnetmaui.md#use-systemiocompression-for-apk-creation\">Use System.IO.Compression for .apk creation<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/dotnetmaui.md#reduced-download-size\">Reduced download size<\/a><br \/>\nFull list of quality improvements on <a href=\"https:\/\/github.com\/dotnet\/android\/releases\/\">dotnet\/android GitHub releases<\/a>.<\/p>\n<h3><strong> .NET for iOS, Mac Catalyst, macOS, tvOS<\/strong><\/h3>\n<p>This release was focused on quality improvements and build performance. A detailed list can be found on <a href=\"https:\/\/github.com\/dotnet\/macios\/releases\/\">dotnet\/macios GitHub releases<\/a> including a list of <a href=\"https:\/\/github.com\/dotnet\/macios\/wiki\/Known-issues-in-.NET10\">Known issues<\/a>.<\/p>\n<h2><strong> Windows Forms<\/strong><\/h2>\n<p>This release introduced <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/winforms.md#shared-core-clipboard-functionality-with-wpf\">shared core clipboard functionality with WPF<\/a> and was focused on several quality and engineering improvements. See the <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/winforms.md\">full release notes<\/a> for details.<\/p>\n<h2><strong> Windows Presentation Foundation (WPF)<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/wpf.md#messagebox-api-enhancements\">API Enhancements<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/wpf.md#shared-clipboard-code\">Shared Clipboard Code<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/wpf.md#fluent-theme-bug-fixes-and-enhancements\">Fluent Theme Bug Fixes and Enhancements<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/wpf.md#performance-improvements\">Performance Improvements<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/wpf.md\">Full Release Notes<\/a> for details.<\/p>\n<h2><strong> Entity Framework Core<\/strong><\/h2>\n<p><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/efcore.md#full-text-search-support-on-azure-cosmos-db-for-nosql\">Full-text search support on Azure Cosmos DB for NoSQL<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/efcore.md#hybrid-search\">Hybrid search<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/efcore.md#vector-similarity-search-exits-preview\">Vector similarity search exits preview<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/efcore.md#small-improvements\">Several small improvements<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview4\/efcore.md\">Full Release Notes<\/a><\/p>\n<h2><strong> Container Images<\/strong><\/h2>\n<p>No new features added in this preview release.<\/p>\n<h2> Get started<\/h2>\n<p>To get started with .NET 10, <a href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet\/10.0\">install the .NET 10 SDK<\/a>.<\/p>\n<p>If you\u2019re on Windows using Visual Studio, we recommend installing the latest <a href=\"https:\/\/visualstudio.microsoft.com\/vs\/preview\/\">Visual Studio 2022 preview<\/a>, which now includes <a href=\"https:\/\/devblogs.microsoft.com\/visualstudio\/agent-mode-has-arrived-in-preview-for-visual-studio\/\">GitHub Copilot agent mode and MCP server support<\/a>. You can also use Visual Studio Code and the <a href=\"https:\/\/marketplace.visualstudio.com\/items?itemName=ms-dotnettools.csdevkit\">C# Dev Kit<\/a> extension with .NET 10.<\/p>\n<h2> Join us for .NET 10 Preview 4 Unboxed Live Stream<\/h2>\n<p>Join us for a live stream unboxing with the team to discuss what\u2019s new in this preview release, with live demos from the dev team!<\/p>\n\n<h2> .NET 10 Discussions<\/h2>\n<p>The team has been making <a href=\"https:\/\/aka.ms\/dotnet\/10\/preview4\">monthly announcements<\/a> alongside full <a href=\"https:\/\/github.com\/dotnet\/core\/tree\/main\/release-notes\/10.0\">release notes<\/a> on the <a href=\"https:\/\/github.com\/dotnet\/core\/discussions\/categories\/news\">dotnet\/core GitHub Discussions<\/a> and has seen great engagement and feedback from the community.<\/p>\n<h2> Stay up-to-date with .NET 10<\/h2>\n<p>You can stay up-to-date with all the features of .NET 10 with:<\/p>\n<p><a href=\"https:\/\/learn.microsoft.com\/dotnet\/core\/whats-new\/dotnet-10\/overview\">What\u2019s new in .NET 10<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/dotnet\/csharp\/whats-new\/csharp-14\">What\u2019s new in C# 14<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/dotnet\/maui\/whats-new\/dotnet-10\">What\u2019s new in .NET MAUI<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/aspnet\/core\/release-notes\/aspnetcore-10.0\">What\u2019s new in ASP.NET Core<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/ef\/core\/what-is-new\/ef-core-10.0\/whatsnew\">What\u2019s new in Entity Framework Core<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/dotnet\/desktop\/winforms\/whats-new\/net100\">What\u2019s new in Windows Forms<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/dotnet\/desktop\/wpf\/whats-new\/net100\">What\u2019s new in WPF<\/a><br \/>\n<a href=\"https:\/\/learn.microsoft.com\/dotnet\/core\/compatibility\/10.0\">Breaking Changes in .NET 10<\/a><br \/>\n<a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/README.md\">.NET 10 Releases<\/a><\/p>\n<p>Additionally, be sure to subscribe to the GitHub Discussions <a href=\"https:\/\/github.com\/dotnet\/core\/discussions\/categories\/news.atom\">RSS news feed<\/a> for all release announcements.  <\/p>\n<p>We want your feedback, so head over to the <a href=\"https:\/\/aka.ms\/dotnet\/10\/preview4\">.NET 10 Preview 4 GitHub Discussion<\/a> to discuss features and give feedback for this release.<\/p>\n<p>The post <a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/dotnet-10-preview-4\/\">.NET 10 Preview 4 is now available!<\/a> appeared first on <a href=\"https:\/\/devblogs.microsoft.com\/dotnet\">.NET Blog<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Today, we are excited to announce the fourth preview release of .NET 10 with enhancements across the .NET Runtime, SDK, 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