Is It Possible To Manually Send HTTP Code 40x To Client From Web Service Method

Jan 13, 2011

I would like to manually send an HTTP 40x error code to client from a web method in c# asp.net web service.

Specifically I need to send 400 (Bad request) or 401 (Unauthorized).

I was thinking about the flow to look like:

if (a <= 0)
{
//send HTTP Error 400 - Bad request to client
return;
}

Is it possible? How?

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