Question

Can anyone help? I have an issue with calling a asp.net webservice from jquery.. actually i think it maybe jquery … as i have a break point and it doesn’t arrive in the webservice..

Here is my jquery, the webservice method accepts 2 parameters…

So i setup a simple test to pass in 7 and 7 .. i tried replacing with the word “test” also and it doesn’t work..

Basically lands in the error function which displays “sorry error happens” but the err is undefined.

jQuery.ajax({
            type: 'POST'
            , url: 'CallService.asmx/TempCanMakeCall'
            , contentType: 'application/json; charset=utf-8'
            , dataType: "json"
            , data: "{'reservationNum':'7','completedReservationNum':'7'}"
            , success: function(data, status) {
                alert(data);
            }
            , error: function(xmlHttpRequest, status, err) {
                alert('Sorry! Error happens.' + err);
            }
    }
        );

Here is the asp.net webservice

[WebMethod()]
    public bool TempCanMakeCall(string reservationNum, string completedReservationNum )
    {

            return true;
    }

Answer 1

xmlHttpRequest.responseText has always been my goto when dealing with jQuery AJAX errors.

Try making your ASP.NET function static:

[WebMethod()]
public static bool TempCanMakeCall(string reservationNum, string completedReservationNum )
{

        return true;
}

Also note that the returned JSON value is encapsulated in an object named ‘d’ (ASP.NET specific.) To display your return value upon success, you would need to do this:

success: function(data, status) {
            alert(data.d);
        }