ReSharper 2020.1 Help

Code Inspection: Some values of the enum are not processed inside switch statement

When using a switch statement with an enum, it is not required to have a case statement for each enum value — if some values do not have cases, the switch will do nothing for such values.

Although missing cases might be intended by the author, more often than not it is a consequence of adding a new value to the enum and forgetting to update the switch accordingly.

ReSharper flags such switch statements as potential issues and suggest generating case statements for unhandled values.

enum TestEnum { A, B } class Program { void Test(TestEnum testEnum) { // case 'TestEnum.B' is not handled and won't do anything switch (testEnum) { case TestEnum.A: Console.WriteLine("A"); break; } } }
Last modified: 08 May 2020