using System;

using System.Linq;

using System.Collections.Generic;

​

​

public class RoutingTarget

{

    public int Id { get; set; }

    public string Site { get; set; }

}

​

​

public class Program

{

    public static void Main()

    {

        String configSite = "abcde";

        List<RoutingTarget> rts = new List<RoutingTarget>();

        rts.Add(new RoutingTarget(){ Site = "qwet" });

        rts.Add(new RoutingTarget(){ Site = "lzxclskdm" });

        rts.Add(new RoutingTarget(){ Site = "abcde" });

        rts.Add(new RoutingTarget(){ Site = "abcde" });

        rts.Add(new RoutingTarget(){ Site = "alsalskdj" });

        rts = rts.OrderBy(rt => !rt.Site.Equals(configSite)).ToList();

        Console.WriteLine(String.Join(",", rts.Select(rt => rt.Site)));

    }

}