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POCalling .Net webservice with Jquery is causing woe when trying to post data
 

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    <p>The following code executes properly when the data key has no data to send, i.e. data: "{}" an empty JSON object and the webservice takes no parameters. I would like to post some data to the webservice but I am running into trouble.</p> <p>When I try to set this to data:"{'name':'Niall','surname':'Smith'}", I get an error</p> <pre><code>{"Message":"Invalid web service call, missing value for parameter: \u0027json\u0027.","StackTrace":" at System.Web.Script.Services.WebServiceMethodData.CallMethod(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"} </code></pre> <p>The webservice is not executed.</p> <p>This is my Jquery call to post my data back to the server.</p> <pre><code> $.ajax({ type: "POST", url: "/WebServices/BasketServices.asmx/AddItemToBasket", data: "{'name':'niall'}", // Is this Correct?? contentType: "application/json; charset=utf-8", dataType: "json", success: OnItemAddedSuccess }); function OnItemAddedSuccess(result,eventArgs) { //deserialize the JSON and use it to update the Mini Basket var response = JSON.parse(result.d); } </code></pre> <p>here is my WebService</p> <pre><code>[WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] [System.Web.Script.Services.ScriptService] public class BasketServices : System.Web.Services.WebService { [WebMethod(true)] public string AddItemToBasket(string json) { //do stuff return myString.toJSON(); } } </code></pre> <p>What could the problem be? Is it the format of the JSON data to be posted? Could it be that I haven't set the correct Attributes on my WebService. What about the problems alluded to in <a href="http://encosia.com/2008/06/05/3-mistakes-to-avoid-when-using-jquery-with-aspnet-ajax/" rel="noreferrer">Dave Ward's post</a></p> <p>I have tried everything I can think of. Does anyone have any ideas?</p>
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