JetBrains Rider 2019.1 Help

Making Auto-Properties Get-Only

Starting from C# 6.0, you can define get-only auto-properties, which (similarly to readonly fields) can be only initialized via a constructor or an initializer. JetBrains Rider detects and helps you remove the redundant set accessor on auto-properties that are initialized from the constructor/initializer and have no write usages.

Make auto-property get-only fix

If you do not want JetBrains Rider to suggest this, you can disable the code inspection that detects it (Auto-property can be made get-only).

The reverse functionality is also available. If you decide to change the value of a get-only property later in your code (which leads to a compiler error), JetBrains Rider detects the error and suggests fixing it by adding the setter for the property:

JetBrains Rider: quick-fix for a missing setter

Another option to make auto-properties get-only in a bulk mode is code cleanup. You can either run code cleanup with the default Default: Full Cleanup profile or create and run a custom profile solely targeted at your specific task as described below.

To remove setters from auto-properties that only have read access

  1. Press Ctrl+Alt+S, or alternatively from the main menu, choose File | Settings on Windows and Linux or JetBrains Rider | Preferences on macOS.

  2. Go to the Code Cleanup settings page: Editor | Code Cleanup.

  3. Create a new profile as described in the To create a new custom cleanup profile section. In the Selected profile settings section for the new profile, tick the Make auto-property get-only, if possible checkbox. Optionally, you can enable other code cleanup tasks in this profile.

  4. Click Save to apply the modifications and let JetBrains Rider choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see layer-based settings. Click Save.

  5. Select the scope where you want to make auto-properties get-only:

    • Set the caret anywhere in the file to make auto-properties get-only to the file.

    • Select one or more items in the Solution Explorer to make auto-properties get-only in the files under these nodes and their child items.

  6. Choose Code | Code Cleanup in the main menu.

  7. In the Code Cleanup dialog that opens, select the newly created profile.

  8. Click OK. JetBrains Rider will make auto-properties get-only in the selected scope.

Last modified: 19 July 2019