jQuery success callback called with empty response when WCF method throws an Exception

Question

I\'m tearing my hair out over this one, so bear with me (it\'s a long post).

Basic Info

• ASP.NET 3.5 with WCF service in ASP.NET compatibility mode

Answer 1

Have you looked at JSON.NET? I was using it to convert objects in c# to JSON friendly strings then passing it back across the wire to my client where I parsed it into a JSON object. In the end I got rid of it and went to JSON2 for stringify. Here is my ajax call I use:

function callScriptMethod(url, jsonObject, callback, async) {

    callback = callback || function () { };
    async = (async == null || async);

    $.ajax({
        type: 'POST',
        contentType: 'application/json; charset=utf-8',
        url: url,
        data: JSON.stringify(jsonObject),
        dataType: 'json',
        async: async,
        success: function (jsonResult) {
            if ('d' in jsonResult)
                callback(jsonResult.d);
            else
                callback(jsonResult);
        },
        error: function () {
            alert("Error calling '" + url + "' " + JSON.stringify(jsonObject));
            callback([]);
        }
    });
}