System.Web.Configuration.HttpCapabilitiesBase.InternalGetClrVersions C# (CSharp) Method

		void InternalGetClrVersions ()
		{
			char [] anychars = new char [] { ';', ')' };
			string s = useragent;
			ArrayList list = null;
			int idx;
			while ((s != null) && (idx = s.IndexOf (".NET CLR ")) != -1) {
				int end = s.IndexOfAny (anychars, idx + 9);
				if (end == -1)
					break;

				string ver = s.Substring (idx + 9, end - idx - 9);
				Version v = null;
				try {
					v = new Version (ver);
					if (clrVersion == null || v > clrVersion)
						clrVersion = v;

					if (list == null)
						list = new ArrayList (4);

					list.Add (v);
				} catch { }
				s = s.Substring (idx + 9);
			}
			
			if (list == null || list.Count == 0) {
				clrVersion = new Version ();
				clrVersions = null;
			} else {
				list.Sort ();
				clrVersions = (Version []) list.ToArray (typeof (Version));
			}
		}