ReSharper 2020.3 Help

Convert Static to Extension Method refactoring

ReSharper | Refactor | Convert | Static to Extension Method…
ReSharper_Static2ExtensionAction

This refactoring helps you convert a static method to an extension method, provided that the static method:

  • Has at least one parameter.

  • Resides in a non-generic, non-nested static class.

Consider the following example:

static class Foo { public static string Reverse(string input) { var chars = input.ToCharArray(); Array.Reverse(chars); return new string(chars); } static void Test(string str) { str = Reverse(str); } }
static class Foo { public static string Reverse(this string input) { var chars = input.ToCharArray(); Array.Reverse(chars); return new string(chars); } static void Test(string str) { str = str.Reverse(); } }

Convert a static method into an extension method

  1. Place the caret at the declaration or a usage of a static method in the editor, or select it in the File Structure window.

  2. Do one of the following:

    • Press Control+Shift+R and then choose Convert Static Method to Extension

    • Right-click and choose Refactor | Convert Static Method to Extension in the context menu.

    • Choose ReSharper | Refactor | Convert | Static to Extension Method… in the main menu.

  3. If no conflicts are found, ReSharper performs the refactoring immediately. Otherwise, it prompts you to resolve conflicts.

This feature is supported in the following languages and technologies:

Language: C#Language: VB.NETLanguage: C++Language: HTMLLanguage: ASP.NETLanguage: RazorLanguage: JavaScriptLanguage: TypeScriptLanguage: CSSLanguage: XMLLanguage: XAMLLanguage: ResxLanguage: Build ScriptsLanguage: ProtobufLanguage: JSON
Feature is available in C#Feature is available in Visual Basic .NET Feature is not available in C++ Feature is not available in HTML Feature is not available in ASP.NET Feature is not available in Razor Feature is not available in JavaScript Feature is not available in TypeScript Feature is not available in CSS Feature is not available in XML Feature is not available in XAML Feature is not available in Resource files Feature is not available in build script files Feature is not available in Protobuf Feature is not available in JSON

The instructions and examples given here address the use of the feature in C#. For details specific to other languages, see corresponding topics in the ReSharper by Language section.

Last modified: 03 September 2020