csharp(CS0051)

.net6
定义了一个类，里面有一个枚举，报csharp(CS0051)

enum Sex {
    Male,
    Female
}

public class Student {

    string name;
    int age;
    Sex sex;

    public Student(string name, int age, Sex sex) {
        this.name = name;
        this.age = age;
        this.sex = sex;
    }
}

如图：

原因是定义枚举前未加Public修饰符

public enum Sex {
    Male,
    Female
}

public class Student {

    string name;
    int age;
    Sex sex;

    public Student(string name, int age, Sex sex) {
        this.name = name;
        this.age = age;
        this.sex = sex;
    }

}

如下图：