Web Services: How To Execute Custom Code Before Web Method Invoked

Mar 16, 2011

I have many webmethods in one asmx. I need to perform licence checking before some of this webmethods invoked. I can insert following code to each web method that needs checking:

if (!AllRight())
{
// badRequest
return;
}

Or I can insert complex filter to HttpModule to detect webmethod by URL. I need something like attribute for webmethod and place where I can handle it. Is there pretty good solution?

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