Code inspection: Use 'nameof' expression to reference enum member name

This inspection suggests using the nameof expression instead of calling ToString() on enum members. The nameof operator is preferable in C# when referencing the name of a member at compile time. This ensures better performance, avoids potential problems during runtime, and improves code readability.

In the example below, instead of converting an enum to a string using .ToString(), you can use the nameof operator to explicitly reference the name of the enum member.

            
class SampleClass
{
    string Foo()
    {
        return MyEnum.FIRST.ToString();
    }
}

public enum MyEnum
{
    FIRST,
    SECOND
}
            
        

            
class SampleClass
{
    string Foo()
    {
        return nameof(MyEnum.FIRST);
    }
}

public enum MyEnum
{
    FIRST,
    SECOND
}
            
        

Switching to the nameof operator offers the following benefits:

Ensures compile-time safety, as any changes to the enum name will automatically be updated.
Eliminates the runtime overhead associated with the ToString() call.
Enhances code clarity by explicitly expressing the developer's intent.

Last modified: 26 March 2025