C#

asasov wrote:

without using any temporary files on the hard drive?

asasov wrote:

Just requirements ((

List<string> items = new List<string>();

            items.Add("ABC");
            //etc

            string Result = items.Find(delegate(string match)
                                        {
                                            return String.Equals(match, TextBox1.Text);
                                        });

Queue<string> q = new Queue<string>();
//Initialise Queue here

bool b = q.Contains("Hello world");

foreach(item x in queue)
{
  if(x.Id == IdWeAreSearchingFor)
  {
    //Found a match, so do whatever we need to do with it
    break;
  }
}