static OutputCacheProvider LoadProvider (ProviderSettings ps)
{
Type type = HttpApplication.LoadType (ps.Type, false);
if (type == null)
throw new ConfigurationErrorsException (String.Format ("Could not load type '{0}'.", ps.Type));
var ret = Activator.CreateInstance (type) as OutputCacheProvider;
ret.Initialize (ps.Name, ps.Parameters);
return ret;
}