Nameof() alternative for .NET

Question

0.00/5 (No votes)

See more:

How would you code an alternative to NameOf using Reflection. I am using VS 2010 and NameOf is not available. I need to get the names of any Members of any Type in the hierarchy of the Structure.

VB

Structure Market
    Public Vehicle As Vehicle
    Public Place As String
End Structure

Structure Vehicle
    Public [Color] As Color
   
End Structure

Usage:
Dim Market As String = NameOf(GetType(Market)) ' "Market"
Dim Vehicle As String = NameOf(GetType(New Market().Vehicle)) '"Vehicle" or "Market.Vehicle"
Dim Place As String = NameOf(GetType(New Market().Place)) '"Place" or "Market.Place"

What I have tried:

VB

Function NameOf(Of T)(ByVal expression As T) As String

End Function

Posted 3-Aug-18 10:26am

User 11061201

Updated 3-Aug-18 16:31pm

v2

Add a Solution

Comments

[no name] 3-Aug-18 17:08pm

Most probably you will find nothing...Nameof Operator: A New Feature of C# 6.0[^]

j snooze 3-Aug-18 17:27pm

does GetType(???).FullName not work for you?

[no name] 3-Aug-18 18:07pm

Yes, but I also need the variable name not just the name of it's underlying type.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Accepted Answer · 2018-08-03T16:32:00

Reflection won't work because, in your example, every call to GetType is going to return System.String, or whatever the type of the variable is. You're not going to find your variable name on any instance of the Type class.

It can be done using an Expression Tree, but this its expensive to execute. Use this code in any case where you have to execute it thousands of times a second and you're going to notice quite the performance hit.

C#

class Program
{
    static void Main(string[] args)
    {
        string Market = string.Empty;

        Console.WriteLine(Ext.GetNameOf(() => Market));
    }

}

public static class Ext
{
    public static string GetNameOf<T>(Expression<Func<T>> expression)
    {
        var body = (MemberExpression)expression.Body;

        return body.Member.Name;
    }
}