{"id":22756,"date":"2019-11-14T10:14:39","date_gmt":"2019-11-14T17:14:39","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/aspnet\/?p=22756"},"modified":"2019-11-14T10:14:39","modified_gmt":"2019-11-14T17:14:39","slug":"asp-net-core-updates-in-net-core-3-1-preview-3","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/asp-net-core-updates-in-net-core-3-1-preview-3\/","title":{"rendered":"ASP.NET Core updates in .NET Core 3.1 Preview 3"},"content":{"rendered":"<p><a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/announcing-net-core-3-1-preview-3\/\">.NET Core 3.1 Preview 3 is now available<\/a>. This release is primarily focused on bug fixes.<\/p>\n<p>See the <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/master\/release-notes\/3.1\">release notes<\/a> for additional details and known issues.<\/p>\n<h2>Get started<\/h2>\n<p>To get started with ASP.NET Core in .NET Core 3.1 Preview 3 <a href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet-core\/3.1\">install the .NET Core 3.1 Preview 3 SDK<\/a>.<\/p>\n<p>If you&#8217;re on Windows using Visual Studio, for the best experience we recommend <a href=\"https:\/\/visualstudio.com\/preview\">installing the latest preview of Visual Studio 2019 16.4<\/a>. Installing Visual Studio 2019 16.4 will also install .NET Core 3.1 Preview 3, so you don&#8217;t need to separately install it. For Blazor development with .NET Core 3.1, Visual Studio 2019 16.4 is <em>required<\/em>.<\/p>\n<p>Alongside this .NET Core 3.1 Preview 3 release, we&#8217;ve also released a Blazor WebAssembly update. To install the latest Blazor WebAssembly template also run the following command:<\/p>\n<pre><code>dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.1.0-preview3.19555.2\n<\/code><\/pre>\n<h2>Upgrade an existing project<\/h2>\n<p>To upgrade an existing ASP.NET Core 3.1 Preview 2 project to 3.1 Preview 3:<\/p>\n<ul>\n<li>Update all Microsoft.AspNetCore.* package references to 3.1.0-preview3.19555.2<\/li>\n<\/ul>\n<p>See also the full list of <a href=\"https:\/\/github.com\/aspnet\/announcements\/issues?utf8=%E2%9C%93&amp;q=is%3Aissue+label%3A3.1.0+label%3A%22Breaking+change%22\">breaking changes<\/a> in ASP.NET Core 3.1.<\/p>\n<p>That&#8217;s it! You should now be all set to use .NET Core 3.1 Preview 3!<\/p>\n<h2>Give feedback<\/h2>\n<p>We hope you enjoy the new features in this preview release of ASP.NET Core! Please let us know what you think by filing issues on <a href=\"https:\/\/github.com\/aspnet\/aspnetcore\/issues\">GitHub<\/a>.<\/p>\n<p>Thanks for trying out ASP.NET Core!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>.NET Core 3.1 Preview 3 is now available! Check out what&#8217;s new in ASP.NET Core in this release.<\/p>\n","protected":false},"author":1233,"featured_media":58792,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[197],"tags":[],"class_list":["post-22756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aspnet"],"acf":[],"blog_post_summary":"<p>.NET Core 3.1 Preview 3 is now available! Check out what&#8217;s new in ASP.NET Core in this release.<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/22756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/users\/1233"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/comments?post=22756"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/22756\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media\/58792"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media?parent=22756"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/categories?post=22756"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/tags?post=22756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}