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Code Inspection: Redundant 'partial' modifier on method declaration

Category

Redundancies in Symbol Declarations

ID

PartialMethodWithSinglePart

EditorConfig

resharper_partial_method_with_single_part_highlighting

Default severity

Warning

Language

C#

Requires SWA

No

Partial methods allow separating the method signature (declaration) from its implementation. A single declaration part of a partial method might indicate that the development was not completed.

A missing implementation part does not cause an error because in this case the method and all its calls are removed from the assembly at compile time. However, ReSharper suggests that it is better to make such a method non-partial to eliminate unclear code.

If it is the declaration part that is missing, an error occurs. Again, ReSharper suggests making such a method non-partial.

In the example below, the method ToCart() has only the declaration part, implementation parts of the method were not found in any part of the class. ReSharper removes the partial keyword and adds a method body according to the preferences on the Code Editing | Member Generation page of ReSharper options Alt+R, O:

partial class Toy { public int Id { get; set; } partial void ToCart(); } partial class Toy { public bool CanBeep { get; set; } public bool CanJump { get; set; } }
partial class Toy { public int Id { get; set; } void ToCart() { throw new NotImplementedException(); } } partial class Toy { public bool CanBeep { get; set; } public bool CanJump { get; set; } }
Last modified: 15 April 2024