ReSharper Help

Convert Indexer to Method

ReSharper | Refactor | Convert | Indexer to Method…
ReSharper_Indexer2Function

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.

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

Before refactoringAfter refactoring
class BookLibrary { private Book[] books = new Book[1000]; public Book this[int index] { get { if (index >= books.Length) throw new IndexOutOfRangeException("incorrect index"); return books[index]; } set { if (index >= books.Length) throw new IndexOutOfRangeException("incorrect index"); books[index] = value; } } public void TestInsertBookAt(Book book, int index) { this[index] = book; } }
class BookLibrary { private Book[] books = new Book[1000]; public void SetItem(int index, Book value) { if (index >= books.Length) throw new IndexOutOfRangeException("incorrect index"); books[index] = value; } public Book GetItem(int index) { if (index >= books.Length) throw new IndexOutOfRangeException("incorrect index"); return books[index]; } public void TestInsertBookAt(Book book, int index) { SetItem(index, book); } }

To convert an indexer to 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:
    • On the main menu, choose ReSharper | Refactor | Convert | Indexer to Method…
    • Right-click and choose Refactor | Convert Indexer to Method(s) on the context menu.
    • Press Ctrl+Shift+R and then choose Convert Indexer to Method(s)
    The Convert Indexer to Method(s) dialog will open.
  3. Use controls in the dialog box 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.
Refactorings__Convert_Indexer_to_Method

This feature is supported in the following languages/technologies:

C# VB.NET C++ HTML ASPX Razor JavaScript TypeScript CSS XML XAML RESX Build Scripts
feature_available feature_available

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.

See Also

Last modified: 30 June 2015