How can I compare Two List Objects in C# [Resolved]

Posted by Kasani007 under C# on 11/16/2015 | Points: 10 | Views : 18788 | Status : [Member] | Replies : 8

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How can I compare Two List Objects In C# Using Linq or Anything

First List Object First Element Should compare only with second List Object First Element i.e.,

List<ActualAddress> aAddress=new List<ActualAddress>
List<CurrentAddress> cAddress=new List<CurrentAddress>

//How can I Compare n number Of Elements Of Both The Objects Frist Element In a Simple Format
aAddress.Address1[0]==cAddress.Address1[0];
aAddress.Address1[1]==cAddress.Address1[1];
aAddress.Address1[2]==cAddress.Address1[2];
------ ------- ------ -----
------- -------- ----- -----
aAddress.Address1[n]==cAddress.Address1[n];

please help me...

[Resolved]

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Posted by: Rajnilari2015 on: 11/16/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 50

0	Try this using System; using System.Collections.Generic; using System.Linq; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { var aAddress = new List<ActualAddress>() { new ActualAddress { Address = "Address1" } ,new ActualAddress { Address = "Address2" } ,new ActualAddress { Address = "Address33" } ,new ActualAddress { Address = "Address4" } ,new ActualAddress { Address = "Address5" } }; var cAddress = new List<CurrentAddress>() { new CurrentAddress { Address = "Address1" } ,new CurrentAddress { Address = "Address2" } ,new CurrentAddress { Address = "Address3" } ,new CurrentAddress { Address = "Address4" } ,new CurrentAddress { Address = "Address6" } }; var x = aAddress.Select(a => a.Address).Except(cAddress.Select(c => c.Address)); var y = cAddress.Select(a => a.Address).Except(aAddress.Select(c => c.Address)); x.Zip(y, (a, b) => ("Old Address :" + a + " Changes To New Address:" + b)) .ToList() .ForEach(i => Console.WriteLine(i)); Console.ReadKey(); } } public class ActualAddress { public string Address { get; set; } } public class CurrentAddress { public string Address { get; set; } } } Result Old Address :Address33 Changes To New Address:Address3 Old Address :Address5 Changes To New Address:Address6 -- Thanks & Regards, RNA Team Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Try this

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var aAddress = new List<ActualAddress>() 
                            {
                              new ActualAddress { Address = "Address1" }
                              ,new ActualAddress { Address = "Address2" }
                              ,new ActualAddress { Address = "Address33" }
                              ,new ActualAddress { Address = "Address4" }
                              ,new ActualAddress { Address = "Address5" }
                            };

            var cAddress = new List<CurrentAddress>() 
                            {
                              new CurrentAddress { Address = "Address1" }
                              ,new CurrentAddress { Address = "Address2" }
                              ,new CurrentAddress { Address = "Address3" }
                              ,new CurrentAddress { Address = "Address4" }
                              ,new CurrentAddress { Address = "Address6" }
                            };            

            var x = aAddress.Select(a => a.Address).Except(cAddress.Select(c => c.Address));
            var y = cAddress.Select(a => a.Address).Except(aAddress.Select(c => c.Address));

            x.Zip(y, (a, b) => ("Old Address :" + a + " Changes To New Address:" + b))
             .ToList()
             .ForEach(i => Console.WriteLine(i));           

            Console.ReadKey();
        }
    }

    public class ActualAddress
    {
        public string Address { get; set; }
    }

    public class CurrentAddress
    {
        public string Address { get; set; }
    }
}

Result

Old Address :Address33 Changes To New Address:Address3
Old Address :Address5 Changes To New Address:Address6

--
Thanks & Regards,
RNA Team

Kasani007, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Rajnilari2015 on: 11/16/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25

0	Try this var flag = aAddress .Select(n => n.Address1) .Except(cAddress.Select(n => n.Address1)) .Count() == 0 ? true : false; if (flag) Console.WriteLine("Addresses are equal"); else Console.WriteLine("Addresses are not equal"); -- Thanks & Regards, RNA Team Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Try this

var flag = aAddress

 .Select(n => n.Address1)

.Except(cAddress.Select(n => n.Address1))

.Count() == 0 ? true : false;



if (flag) Console.WriteLine("Addresses are equal");

else Console.WriteLine("Addresses are not equal");

--
Thanks & Regards,
RNA Team

Kasani007, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Rajnilari2015 on: 11/16/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25

0	A few day back I answered a similar kind of question http://www.dotnetfunda.com/forums/show/20724/compare-two-list-and-get-boolean-values-from-first-list-using-linq Hope that also helps -- Thanks & Regards, RNA Team Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Kasani007 on: 11/16/2015 [Member] Starter | Points: 25

0	hi Rajnilari, ThanQ for Your Reply , your reply helped me... and Also I want To display what the changes are in both the object elements, if the addresses are not same... how can i hold the data and display..i.e., output should be like ... "The Actual Address1[0] string is:____ and Current Address1[0] string is:..." "The Actual Address1[1] string is:____ and Current Address1[1] string is:..." -------------------------------------------- ----------------------------- ------------------ -------------- ---------------- ----- "The Actual Address1[n] string is:____ and Current Address1[n] string is:..." please help me Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

hi Rajnilari,

ThanQ for Your Reply , your reply helped me...

and Also I want To display what the changes are in both the object elements, if the addresses are not same... how can i hold the data and display..i.e., output should be like ...
"The Actual Address1[0] string is:____ and Current Address1[0] string is:..."
"The Actual Address1[1] string is:____ and Current Address1[1] string is:..."
-------------------------------------------- -----------------------------
------------------ -------------- ---------------- -----
"The Actual Address1[n] string is:____ and Current Address1[n] string is:..."
please help me

Kasani007, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Kasani007 on: 11/16/2015 [Member] Starter | Points: 25

0	thanQ Very Much Rajnilari... its working Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Rajnilari2015 on: 11/17/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25

0	Glad that it has helped you.In that case could you please accept the answer. (: -- Thanks & Regards, RNA Team Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Kasani007 on: 11/19/2015 [Member] Starter | Points: 25

0	var numbers = new [] { 1, 2, 3, 4 }; var words = new [] { "one", "two", "three", "four" }; var numbersAndWords = numbers.Zip(words, (n, w) => new { Number = n, Word = w }); foreach(var nw in numbersAndWords) { Console.WriteLine(nw.Number + nw.Word); } Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Rajnilari2015 on: 11/19/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 25

0	@ Kasani007, how the above code is related to the question being asked? -- Thanks & Regards, RNA Team Kasani007, if this helps please login to Mark As Answer. \| Alert Moderator

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