Update an Object by Matching with other Object Values depend on a Condition in C#

Question

I have class as seen below

public class Channels
    {
        internal string CallerExt { get; set; }
        internal string ChannelName { get; set; }
        internal string CalleeExt { get; set; }

        public Channels(string CallerExt, string ChannelName, string CalleeExt)
        {
            this.CallerExt = CallerExt;
            this.ChannelName = ChannelName;
            this.CalleeExt = CalleeExt;
        }
    }

I want to add the list of Channel objects if there all the values are new, if CallerExt, and CaleeExt already exist in the same object then ChannelName should be updated with the new value for the same object?

I managed to find the object which contains CallerExt & CalleeExt Values matches with new values as seen below:

public static List<Channels> activeChannels = new List<Channels>();

if (!string.IsNullOrWhiteSpace(caller) && !string.IsNullOrWhiteSpace(now) && !string.IsNullOrWhiteSpace(callee))
{
    var recentChannel = activeChannels.FirstOrDefault(c => c.CallerExt == caller && c.CalleeExt == callee);
}

But I am not sure how to update that specific Object with the new Channel Name? Thanks for your help in advance..

Answer 1

Thanks for those who tried to answer my question following solution worked for me

if (!string.IsNullOrWhiteSpace(caller) && !string.IsNullOrWhiteSpace(now) && !string.IsNullOrWhiteSpace(callee))
{
    var recentChannel = activeChannels.FirstOrDefault(c => c.CallerExt == caller && c.CalleeExt == callee);
    if (recentChannel != null)
        recentChannel.ChannelName = now;
}                                      

Answer 2

You can try this way, live demo here

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

public class Program
{
    public static void Main()
    {
        var listOfChanels = new List<Channels>{ new Channels("1", "1", "1")};

        UpdateOrAdd(listOfChanels, new Channels("1", "2", "1"));
        UpdateOrAdd(listOfChanels, new Channels("2", "2", "2"));
        UpdateOrAdd(listOfChanels, new Channels("2", "3", "3"));

        foreach(var item in listOfChanels)
            Console.WriteLine(item.CalleeExt + item.CallerExt + item.ChannelName);
    }

    private static void UpdateOrAdd(List<Channels> list, Channels newObject)
    {
        var item = list.FirstOrDefault(p => p.CalleeExt == newObject.CalleeExt && p.CallerExt == newObject.CallerExt);

        if(item == null){
            list.Add(newObject);
        }else{
            item.ChannelName = newObject.ChannelName;
        }
    }

    public class Channels
    {
        internal string CallerExt { get; set; }
        internal string ChannelName { get; set; }
        internal string CalleeExt { get; set; }

        public Channels(string CallerExt, string ChannelName, string CalleeExt)
        {
            this.CallerExt = CallerExt;
            this.ChannelName = ChannelName;
            this.CalleeExt = CalleeExt;
        }
    }
}