using System;

public class Program

{

    public static void Main()

    {

        var data = new AddressData

        {

            AddressSpaceID = "ABCD1234",

            AddressSegments = "AddressSegment",

        };

        Object obj = data;

        Console.WriteLine("Normal AddressData ToString: " + data.ToString());

        Console.WriteLine("Normal Object ToString: " + obj.ToString());

        Console.WriteLine();

        Console.WriteLine();

        var data2 = new AddressData2

        {

            AddressSpaceID = "ABCD1234",

            AddressSegments = "AddressSegment",

        };

        obj = data2;

        Console.WriteLine("Override AddressData ToString: " + data2.ToString());

        Console.WriteLine("Override Object ToString: " + obj.ToString());

        Console.WriteLine();

        Console.WriteLine();

        var data3 = new AddressData3

        {

            AddressSpaceID = "ABCD1234",

            AddressSegments = "AddressSegment",

        };

        obj = data3;

        Console.WriteLine("New AddressData ToString: " + data3.ToString());

        Console.WriteLine("New Object ToString: " + obj.ToString());

    }

}

​

public class AddressData

{

    public string AddressSpaceID { get; set; }

​

    public string AddressSegments { get; set; }

}

​

public class AddressData2

{

    public string AddressSpaceID { get; set; }

​

    public string AddressSegments { get; set; }

    public override string ToString()

    {

        return $"{AddressSpaceID}-{AddressSegments}";

    }   

}

​

public class AddressData3

{

    public string AddressSpaceID { get; set; }

​

    public string AddressSegments { get; set; }

    public new string ToString()

    {

        return $"{AddressSpaceID}-{AddressSegments}";

    }   

}