The "nameof " operator,"expression cannot be used in an argument to nameof"

Question

I got a simple class:

public class Stu
{
    public string Name { get; set; }
}

If I do like this:

var stu = new Stu();
Console.WriteLine(nameof(stu.Name));

it works well. but this:

Console.WriteLine(nameof(new Stu().Name));

or this:

Console.WriteLine(nameof((new Stu()).Name));

not work,the complier tells me :"expression cannot be used in an argument to nameof".

I don't know why.What the tip means for?What is the corret parameter type of the operator "nameof()"?

I searched the web,this page tells me the "expression may be a property-group or a method-group",but is the expression "new Stu().Name" not a "property-group"?

Answer 1

You probably want

nameof(Stu.Name)

nameof() gets some special syntax so you don't have to instantiate a class to get the name of one of its properties, and other similar scenarios.