WCF Web服务中止

Question

I have following Webservice returning JSON :

    [OperationContract]
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest, ResponseFormat = WebMessageFormat.Json)]
    public SomeResultClass AddObject(InputObject objInputObject)
    {
        IO objIO = new IO();
        return objIO.AddObject(objInputObject);
    }

on client side I am calling the webservice as following:

   var Data=new Object();
   Data.objInputObject=new Object();
   //Add fields
    $.ajax({
            type: "POST",
            data: JSON.stringify(Data),
            dataType: "json",
            async:false,
            url: "../Webservice/WSService.svc/AddObject",
            contentType: "application/json",
            success: function (result) {
               show_Result(result.AddObjectResult);
            },
            error: function (msg) {
               show_Error(msg);
            }
        });

But the ajax call always gets aborted....also if I add breakpoint in webservice ..it is hit twice....??....the webservice code seem to be executed properly.. but status in browser is aborted?

Answer 1

Found the Solution.....It Seems WCF Doesn't allow DateTime null values... I have public DateTime SortDateTime { get; set; } public DateTime SortDateTime { get; set; } public DateTime SortDateTime { get; set; } which was not assigned any value..

Just changed model class constructor to initialize it :

public class InputObject 
{
    public InputObject ()
    {
        SortDateTime = DateTime.Now;
    }
    //Fields
    public DateTime SortDateTime { get; set; }
}

Answer 2

I had the same problem because I was returning a large amount of record from the server, i added the following line to my wcf config file and it worked.

<system.web>
    <httpRuntime maxRequestLength ="262144" executionTimeout="103600"/>
</system.web>

Hope it also work for you.Please try.

Answer 3

The problem or error is in Javascript Object Notation when serialize; not in WCF.

"•The JavaScript date is based on a time value that is milliseconds since midnight 01 January, 1970 UTC. A day holds 86,400,000 milliseconds. The JavaScript Date object range is -100,000,000 days to 100,000,000 days relative to 01 January, 1970 UTC."

DateTime with value Year=1, Month=1, and Day = 1..31 throw exception. where Year = 1..yyyy, Month = 2..MM, Day=1..DD and so on works fine. ("MyDateTime":"/Date(-62132950800000+0000)/")

I did a massive test with 'DateTime', but the problem is within the limits.

As DateTime is a ValueType then null values do not is allowed, but Nullable<DateTime> also works fine.("MyDateTime":null)

I had the same problem today. (thanks Shashank Kumar)