Question

I’m trying to write username validation using jquery, I’m using jmsajax plugin.I have tested webservice, it work fine. I’m getting error.
Webservice code

[System.Web.Script.Services.ScriptMethod(ResponseFormat = ResponseFormat.Json)]     [WebMethod]     public bool check_username(string uname)     {         DBMOdelDataContext db = new DBMOdelDataContext();         var q = from p in db.users                 where p.username == uname                 select p;                      if (q.Count() == 0)             return false;         else             return true;      } 

Jquery code.

$(document).ready(function() {         $('.unamebtn').blur(function() {                             $uname = $(this).val();              $.jmsajax({                 type: 'POST',                 url: 'Services/MyServices.asmx',                                     data:'{userName='' + $uname + ''}',                 method: 'check_username',                 dataType: 'msjson',                 success: function(result) {                     $('#msg').html(result);                     alert(result);                     $('#msg').addClass('notice');                 }             });                         });     }); 

The Exception it is throwing.
{‘Message’:’Cannot convert object of type \u0027System.String\u0027 to type \u0027System.Collections .Generic.IDictionary`2[System.String,System.Object]\u0027′,’StackTrace’:’ at System.Web.Script.Serialization .ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain (Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject )\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToType(Object o, Type type, JavaScriptSerializer serializer)\r\n at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)\r\n at System.Web.Script.Serialization.JavaScriptSerializer .Deserialize[T](String input)\r\n at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest (HttpContext context, JavaScriptSerializer serializer)\r\n at System.Web.Script.Services.RestHandler .GetRawParams(WebServiceMethodData methodData, HttpContext context)\r\n at System.Web.Script.Services .RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)’,’ExceptionType’ :’System.InvalidOperationException’}

Answer 1

have you tried?

$.jmsajax({     ...     data: { uname: $uname },     ... });