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. ReSharper detects and helps you remove the redundant set accessor on auto-properties that are initialized from the constructor/initializer and have no write usages.
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Get-only auto-properties is a C# 6.0 feature.
By default, ReSharper automatically detects C# version based on the associated compiler. However, you can specify the target C# version explicitly for a project — right-click the project in the Solution Explorer, choose Edit project item properties from the context menu and use the C# Language Level selector .
To set the C# version for all projects in your solution, specify it in a Directory.Build.props file in your solution directory as described here.
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), ReSharper detects the error and suggests fixing it by adding the setter for the property:
Another option to make auto-properties get-only in a bulk mode is code cleanup. You can either run code cleanup with the Built-in: Full Cleanup profile or create and run a custom profile solely targeted at your specific task as described below.
Remove setters from auto-properties that only have read access
Select ReSharper | Options from the main menu or press Alt+R O.
Go to the cleanup profiles settings page: Code Editing | Code Cleanup | Profiles.
Create a new profile as described in the 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.
Click Save in the Options dialog to apply the modifications and let ReSharper choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see manage and share resharper settings.
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.
Do one of the following:
Press CtrlAlt0F or choose ReSharper | Edit | Cleanup Code… from the main menu .
Right-click anywhere in the text editor or right-click the selection and choose Cleanup Code in the context menu.
In the Code Cleanup dialog that opens, select the newly created profile .
Click Run. ReSharper will make auto-properties get-only in the selected scope.
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Code cleanup is not applied to generated code. By default, ReSharper provides the list of file masks and regions for generated code typically produced by Visual Studio (for example, Windows Form Designer-generated code). If necessary, you can edit the list of generated items on the Code Inspection | Generated Code page of ReSharper options (Alt+R, O).
If you want to make auto-properties get-only without opening the Code Cleanup dialog to choose a profile, you can bind the created profile to the silent cleanup and run it by pressing CtrlShiftAlt0F. You can also create a custom cleanup profile that would combine making properties get-only with other code style tasks.
This feature is supported in the following languages and technologies: