public void AsDictionary()
{
var a = new System.Collections.Specialized.NameValueCollection {
{ "1", "one" },
{ "1", "uno" },
};
var d = a.AsDictionary();
Assert.AreEqual(new[] { "one", "uno" }, d["1"]);
Assert.Throws <KeyNotFoundException>(() => { var x = d["2"]; });
}