private Lab GetLab(string uri)
{
Uri theUri;
if (!Uri.TryCreate(uri, UriKind.Absolute, out theUri))
{
// It may be missing the protocol. ie) http:// or https://
var withProtocol = $"http://{uri}";
if (Uri.IsWellFormedUriString(withProtocol, UriKind.Absolute))
{
theUri = new Uri(withProtocol);
}
else
{
throw new ArgumentException($"{nameof(uri)}: Could not parse the input into a proper URI [{uri}]");
}
}
var fullUri = theUri.ToString();
Lab lab;
if (_labs.TryGetValue(fullUri, out lab))
{
return lab;
}
lab = new Lab(theUri);
// Dictionary will always update the value with the latest value.
_labs.AddOrUpdate(fullUri, _ => lab, (key, _) => lab);
return lab;
}
static void Main(string[] args)
{
var uri = "http://www.med.umich.edu/lrc/coursepages/m1/anatomy2010/html/quizzes/practical2007/cardio_respiratory/lab14.html";
Lab lab;
try
{
lab = new Lab(new Uri(uri));
}
catch (ArgumentException e)
{
Console.WriteLine(e);
return;
}
var answer = lab.GetAnswerAsync(8).Result;
var answer2 = lab.GetAnswerAsync(9).Result;
}