runtimeconfig.dev.json file not generated

The .NET SDK no longer generates the runtimeconfig.dev.json file by default. This file was not used in most scenarios, and finding and loading the file added small amounts of performance overhead.

Previous behavior

An [Appname].runtimeconfig.dev.json file was automatically generated at compile time.

New behavior

The [Appname].runtimeconfig.dev.json file is no longer generated by default.

Version introduced

.NET SDK 6.0.100

Change category

This change might affect binary compatibility.

Reason for change

Not generating the file provides a small but measurable performance improvement.

Recommended action

This change should not affect most customers. However, if you still require this file, add <GenerateRuntimeConfigDevFile>true</GenerateRuntimeConfigDevFile> to your project. For more information, see GenerateRuntimeConfigDevFile.

Affected APIs

N/A