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2021.3
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  1. Refactorings
  2. Main set of refactorings
  3. Convert Indexer to Method

Convert Indexer to Method refactoring

Last modified: 07 April 2022

ReSharper | Refactor | Convert | Indexer to Method…

To assign a shortcut, go to Tools | Options | Environment | Keyboard and find the ReSharper_Indexer2Function command.

This refactoring helps you convert one or both accessors of an indexer into methods and update usages of the indexer in the current solution accordingly.

tip

The reverse functionality is available with the Convert Method to Indexer refactoring refactoring.

In the example below ReSharper converts both getter and setter accessors of the indexer and updates the usage:

Before refactoring

class BookLibrary
{
  private Book[] books = new Book[1000];
  public Book this[int index]
  {
    get => books[index];
    set => books[index] = value;
  }
  public void TestInsertBookAt(Book book, int index)
  {
    this[index] = book;
  }
}

After refactoring

class BookLibrary
{
  private Book[] books = new Book[1000];
  public void SetItem(int index, Book value) => books[index] = value;
  public Book GetItem(int index) => books[index];
  public void TestInsertBookAt(Book book, int index)
  {
    SetItem(index, book);
  }
}

Convert an indexer into a method

  1. Place the caret at this keyword of an indexer in the editor or select an indexer in the File Structure window.

  2. Do one of the following:

    • Press Ctrl+Shift+R and then choose Convert Indexer to Method(s)

    • Right-click and choose Refactor | Convert Indexer to Method(s) in the context menu.

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

    The Convert Indexer to Method(s) dialog will open.

  3. Use controls in the dialog to choose which accessors should be converted and to specify names for the created methods.

  4. To apply the refactoring, click Next.

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

ReSharper refactorings: Convert indexer to method

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 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.

tip

In Visual Basic .NET, this refactoring can be applied to the default property.

See also

Procedures