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Find unsupported APIs in your code

  • บทความ

APIs in your .NET Framework code may not be supported in .NET for many reasons. These reasons range from the simple to fix, such as a namespace change, to the more challenging to fix, such as an entire technology not being supported. The first step is to determine which of your APIs are no longer supported and then identify the proper fix.

.NET Portability Analyzer

The .NET Portability Analyzer is a tool that analyzes assemblies and provides a detailed report on .NET APIs that are missing for the applications or libraries to be portable on your specified targeted .NET platforms.

To use the .NET Portability Analyzer in Visual Studio, install the extension from the marketplace.

For more information, see The .NET Portability Analyzer.

Upgrade assistant

The .NET Upgrade Assistant is a command-line tool that can be run on different kinds of .NET Framework apps. It's designed to assist with upgrading .NET Framework apps to .NET 5. After running the tool, in most cases, the app will require more effort to complete the migration. The tool includes the installation of analyzers that can assist with completing the migration. This tool works on the following types of .NET Framework applications:

  • Windows Forms
  • WPF
  • ASP.NET MVC
  • Console
  • Class libraries

This tool uses the .NET Portability Analyzer among other tools, and guides the migration process. For more information about the tool, see Overview of the .NET Upgrade Assistant.