using System;

using System.Linq.Expressions;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        var item = new Do();

        Console.WriteLine(item.OldToString());

        Console.WriteLine(item.NewToString());

        Console.WriteLine(item.OldToString() == item.NewToString());

    }

}

​

public class Do

{

    public DateTime? MaxBulkCreationUtcDateTime { get; set; }

​

    public DateTime? MinBulkCreationUtcDateTime { get; set; }

​

    public int Limit { get; set; }

​

    public bool IsUnmonitored { get; set; }

​

    public bool IsAlerted { get; set; }

​

    public string OldToString()

    {

        return $"MaxBulkCreationUtcDateTime: {MaxBulkCreationUtcDateTime}, " + $"MinBulkCreationUtcDateTime: {MinBulkCreationUtcDateTime}, " + $"Limit: {Limit}, " + $"IsUnmonitored: {IsUnmonitored}, " + $"IsAlerted: {IsAlerted}.";

    }

​

    public string NewToString()

    {

        return new StringBuilder().AppendPropertyInfo(this, x => x.MaxBulkCreationUtcDateTime).AppendPropertyInfo(this, x => x.MinBulkCreationUtcDateTime).AppendPropertyInfo(this, x => x.Limit).AppendPropertyInfo(this, x => x.IsUnmonitored).AppendPropertyInfo(this, x => x.IsAlerted).Append(".").ToString();

    }

}

​

public static class StringBuilderExtensions

{

    public static StringBuilder AppendPropertyInfo<TSource, TOutput>(this StringBuilder builder, TSource source, Expression<Func<TSource, TOutput>> propertyExpression)

    {

        if (!(propertyExpression.Body is MemberExpression memberExpression))

        {

            throw new ArgumentOutOfRangeException(nameof(propertyExpression), "Lambda be in format source.Property");

        }

​

        if (builder.Length > 0)

        {

            builder.Append(", ");

        }

​

        builder.AppendFormat("{0}: {1}", memberExpression.Member.Name, propertyExpression.Compile().Invoke(source));

        return builder;

    }

}

​