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C#: nameof

Handbook C# · Practical Guide

Creates a string with the name of the symbol at compile time; useful for reporting and checking arguments.

Simple example (Example.cs)

Save this example separately as Example.cs. Run it independently of the other examples on this page.

Example.cs:

// PROJECT-EXAMPLE
int count = 3;
System.Console.WriteLine(nameof(count));

Result:

count

Syntax

nameof(symbol)

Example 1: simple form

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        int amount = 3;
        Console.WriteLine($"{nameof(amount)}={amount}");
    }
}

Example 2: another practical form

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        Console.WriteLine(nameof(Profile.Name));
    }
}
public class Profile { public string Name { get; set; } = ""; }

Example 3

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        Console.WriteLine(nameof(List<>));
        Console.WriteLine(nameof(Dictionary<,>));
    }
}

Official source: Microsoft Learn.