public override IEnumerable <object> Invoke(object argument, Context context)
{
Uri link = UriEx.From((string)argument, () => ReportBadArgument(context, argument));
if (link == null)
{
return(null);
}
ReportVisitingPage(link, context);
context.CurrentAddress = link;
try
{
context.PageContent = webClient.DownloadString(link);
}
catch (WebException ex)
{
Warn(context, ex.Message);
}
return(null);
}