Sending array of objects to WCF

Question

In my application i want to save the data by using jQuery and Ajax.I have a WCF Service. I want to save a List of Objects by using ajax.I have tried with following code, but it is not working.

jquery code :

      var listOfObjects=new Array();

      //creating list of objects
      for(var i=0;i<5;i++)
       {   var MyEntity=new Object();
           MyEntity.TestId =i;
           MyEntity.TestId =i+"testName";
           listOfObjects.push(MyEntity);
       }

        //Saving info
        $.ajax({
            type: "POST",
            async: false,
            data: JSON.stringify(listOfObjects),
            url: "../ServiceLayer/myService.svc/SaveResults",
            contentType: "application/json; charset=utf-8",
            dataType: "json",          
            success: function () {
                alert("success");
            },
            error: function () {
                alert("Error");
            }
        });

WCF :

    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json,
     ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    public void SaveLabResults(List<MyEntity> myEntity)
    {
          var lstEntities=myEntity;
    }

Entity:

[DataContract]
public class MyEntity
{
    [DataMember]
    public string TestId { get; set; }
    [DataMember]
    public string TestName { get; set; }
}

In this way i am trying to send the list data.But internal server error is coming.I am not getting where actually i am wrong.Is there any other way to send the list of objects to WCF ?

Thanks

Community · Accepted Answer · 2015-04-01 05:44:13Z

jquery code :

      var listOfObjects=new Array();

      //creating list of objects
      for(var i=0;i<5;i++)
       {   var MyEntity=new Object();
           MyEntity.TestId =i;
           MyEntity.TestId =i+"testName";
           listOfObjects.push(MyEntity);
       }

       var jsonList=JSON.stringify(listOfObjects);
       var dataToSend = '{"myEntity":'+jsonList+'';

        //Saving info
        $.ajax({
            type: "POST",
            async: false,
            data: dataToSend,
            url: "../ServiceLayer/myService.svc/SaveResults",
            contentType: "application/json; charset=utf-8",
            dataType: "json",          
            success: function () {
                alert("success");
            },
            error: function () {
                alert("Error");
            }
        });

WCF :

    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json,
     ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    public void SaveLabResults(List<MyEntity> myEntity)
    {
          var lstEntities=myEntity;
    }

Entity:

[DataContract]
public class MyEntity
{
    [DataMember]
    public string TestId { get; set; }
    [DataMember]
    public string TestName { get; set; }
}

What i am missing was

 1.var jsonList=JSON.stringify(listOfObjects);
 2.var dataToSend = '{"myEntity":'+jsonData+'';

The 2nd point myEntity key should be there in the final json object.And the key should be same as the wcf method object parameter.

Thanks

This answer really helped me, but for anyone else looking at it there is a mistake in the javascript. var dataToSend = '{"myEntity":'+jsonData+''; should be var dataToSend = '{"myEntity":'+jsonList+'}';

M. Nasir Javaid · Accepted Answer · 2018-05-03 06:03:25Z

1

Try BodyStyle = WebMessageBodyStyle.Bare for your server method or introduce a root element named "myEntity" in your JSON data prior to calling JSON.stringify in your client code.

edited May 3, 2018 at 6:03

M. Nasir Javaid

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answered Mar 22, 2013 at 12:35

Oliver Weichhold

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2 Comments

mns Over a year ago

Whenever i am trying Bare then {"Message":"Authentication failed.","StackTrace":null,"ExceptionType":"System.InvalidOperationException"} is coming

mns Over a year ago

yes Oliver u r right.i included a root element and it worked.Thanks a lot.

Jai · Accepted Answer · 2013-03-22 12:32:03Z

0

May be this one is the error:

//creating list of objects
  for(var i=0;i<5;i++)
   {   var MyEntity=new Object();
       MyEntity.TestId =i;
       MyEntity.TestId =i+"testName";
       listOfObjects.push(MyEntity);
   } //-------------------^--------------shouldn't it be capital M

and in the ajax function:

$.ajax({
        type: "POST",
        async: false,
        data: {data : JSON.stringify(listOfObjects)}, //<---not quite sure about it.

answered Mar 22, 2013 at 12:32

Jai

74.8k12 gold badges76 silver badges104 bronze badges

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