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how to create vector in c#
string input = "server1,server2,server3";
 List<string> serverNames = input.Split(',').ToList();

List<string> serverNames = new List<string>();
 foreach (var server in GetAvailableServers())
 {
     if (server.IsAvailable)
     {
         serverNames.Add( server );
     }
 }

List<string> servers = new List<string>();
servers.Add("http://stackoverflow.com");

List<string> names = new List<string>();
names.Add("John");
names.Add("Mike");

foreach (string name in names)
{
  evaluate(name);
}