Introducing The .NET Hot Reload Experience for Editing Code At Runtime

Introducing The .NET Hot Reload Experience for Editing Code At Runtime

Introducing the new .NET Hot Reload user experience for editing managed code at runtime, now available through the Visual Studio 2019 debugger and dotnet watch. Introducing the .NET Hot Reload experience for editing code at runtime.

Today, we are excited to introduce you to the availability of the .NET Hot Reload experience in Visual Studio 2019 version 16.11 (Preview 1) and through the dotnet watch command-line tooling in .NET 6 (Preview 4). In the rest of this blog post, we’d like this opportunity to walk you through what is .NET Hot Reload, how you can get started using this feature, what our vision is for future planned improvements and clarity on what type of edits and languages are currently supported.

What is .NET Hot Reload?

With Hot Reload you can now modify your apps managed source code while the application is running, without the need to manually pause or hit a breakpoint. Simply make a supported change while your app is running and in our new Visual Studio experience use the “apply code changes” button to apply your edits.

Hot Reload works with many of your existing and upcoming project types such as WPF, Windows Forms, .NET MAUI previews, ASP.NET Core apps code-behind, Console applications, WinUI 3 (managed debugger required) and many others. This support is very broad with the core experience working with any project that is powered by .NET Framework or CoreCLR runtimes.

With Hot Reload our goal is to make this experience available no matter how you prefer to launch your app. With today’s release you can now use this experience through the fully integrated Visual Studio debugger experience or the dotnet watch command-line tool, with more options to come in later releases.

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