从服务器端asp.net引发ajax调用中的错误

Question

I have an ajax call like this

$http.post('../services/name.aspx', packageElement, { 'Content-type': 'application/json' }).
         success(function (data, status, headers, config) {    }).
         error(function(data, status, headers, config) { error function  });

And in server-side I am sending a json response for this request. But now I got a condition when I won't be having any data to send to client, when this happens I need to raise the error function in my Javascript code. Is this possible? if not any other alternatives?

Answer 1

If you want to trigger error handler of ajax from the server side, you could throw an exception, which will trigger the error handler on the client. Or set HttpResponse.StatusCode = HttpStatusCode.NoContent to indicate there's no data to return.

Response.StatusCode = (int)HttpStatusCode.NoContent;
Response.ContentType = "text/plain";
Response.Write("No data");

http://msdn.microsoft.com/en-us/library/system.net.httpstatuscode%28v=vs.110%29.aspx