ReSharper 2022.1 Help

Use Base Type Where Possible refactoring

This refactoring helps replace references to a type with references to one of its base types. ReSharper will analyze all references to the type in the whole solution and update those that can be safely replaced with references to the selected base type. Optionally, you can also replace references in is and typeof operators.

Replace references to a type with references to one of its base types

  1. Select a type in one of the following ways:

    • In the editor, set the caret at the name of a type.

    • Select a type in the Solution Explorer.

    • Select a type in the File Structure window.

    • Select a type in the Class View.

    • Select a type in the Object Browser.

    • Select a type in the type dependency diagram.

  2. Do one of the following:

    • Press Control+Shift+R and then choose Use Base Type where Possible

    • Right-click and choose Refactor | Use Base Type where Possible in the context menu.

    • Choose ReSharper | Refactor | Use Base Type where Possible… in the main menu.

    The Use Base Type where Possible dialog will open.

  3. Select one of base types.

  4. Optionally, select whether you want to replace type usages in the is operator and/or in the typeof operator.

  5. To apply the refactoring, click Next.

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

ReSharper: Use Base Type Where Possible refactoring

This feature is supported in the following languages and technologies:

Language: C#

Language: VB.NET

Language: C++

Language: HTML

Language: ASP.NET

Language: Razor

Language: JavaScript

Language: TypeScript

Language: CSS

Language: XML

Language: XAML

Language: Resx

Language: Build Scripts

Language: Protobuf

Language: 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 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 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: 07 July 2021