C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Linq;
using System.Linq.Expressions;

					
public class Program
{
	public static void Main()
	{

		Console.WriteLine(
			GetName<Representation>(x => x.Client.FirstName)
		);
	}
	
	public static string GetName<T>(Expression<Func<T, object>> exp)
	{
		
		MemberExpression body = exp.Body as MemberExpression;
		var name = body.ToString();
		
		return name
			.Split(new [] { '.' }, 2)
			.LastOrDefault();		
		
	}
}

public class Representation {
	public Client Client {get;set;}
}

public class Client {
	public string FirstName {get;set;}	
}

​x
 
using System;
using System.Linq;
using System.Linq.Expressions;
​
                    
public class Program
{
    public static void Main()
    {
​
        Console.WriteLine(
            GetName<Representation>(x => x.Client.FirstName)
        );
    }
    
    public static string GetName<T>(Expression<Func<T, object>> exp)
    {
        
        MemberExpression body = exp.Body as MemberExpression;
        var name = body.ToString();
        
        return name
            .Split(new [] { '.' }, 2)
            .LastOrDefault();       
        
    }
}
​
public class Representation {
    public Client Client {get;set;}
}
​
public class Client {
    public string FirstName {get;set;}  
}
​
​
​

Environment version: .NET 9.0.0 (9.0.0)
System.Text.Json version: System.Text.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51

Testing deserialization of "" to type System.Nullable`1[System.DateTime]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Int32]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Double]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Decimal]:
   Succeeded, value = null
Testing round-trip of System.Nullable`1[System.DateTime] 06/12/2025 00:22:53
   Passed.
Testing round-trip of System.Nullable`1[System.DateTime]
   Passed.
Testing round-trip of System.DateTime 06/12/2025 00:22:53
   Passed.
Testing round-trip of System.Nullable`1[System.Int32] 1
   Passed.
Testing round-trip of System.Nullable`1[System.Int32]
   Passed.
Testing round-trip of System.Nullable`1[System.Decimal] 1.010101
   Passed.
Testing round-trip of System.Nullable`1[System.Decimal]
   Passed.
Testing round-trip of System.Nullable`1[System.Double] 1.010101
   Passed.
Testing round-trip of System.Nullable`1[System.Double]
   Passed.

Cached Result
Last Run:	12:22:52 am
Compile:	0.061s
Execute:	0.21s
Memory:	20.87Mb
CPU:	0.271s

View IL Code