Pass json string data to Rest service (POST Method) using c#

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C#

ASP.NET

REST

WCFServices

In my project i have to pass dynamic Json string to WCF Rest service. Here both Input / Output should be in Json format. I am using server side code to pass my data. Here is my code

In testpage.aspx.cs Page

string json = "{\"sjSonData\":[{"
                             + "\"log_Id\" : 0,"
                             + "\"user_Id\" : 1249,"
                             + "\"session_key\" : \"dvnoewcdw\","
                             + "\"app_id\" : 1,"
                             + "\"app_version\" :\"1.2.7\","
                             + "\"app_isOnline\" : true,"
                             + "\"app_dateTimeZone\" : \"1997-07-16T19:20:30+01:00\","
                             + "\"log_typeId\" : 1,"
                             + "\"log_description\" : \"valid\""
                         + "},"
                         + "{"
                             + "\"log_Id\" : 1,"
                             + "\"user_Id\" : 1249,"
                             + "\"session_key\" : \"dvnoewcdw\","
                             + "\"app_id\" : 1,"
                             + "\"app_version\" : \"1.2.7\","
                             + "\"app_isOnline\" : true,"
                             + "\"app_dateTimeZone\" : \"1997-07-16T19:20:30+01:00\""
                             +"}]}";

const string url = "http://localhost/RestServiceImpl.svc/jsoninputdata";

       //create an HTTP request to the URL that we need to invoke
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);                
            request.ContentType = "application/json; charset=utf-8"; //set the content type to JSON
            request.Method = "POST"; //make an HTTP POST

            using (var streamWriter = new StreamWriter(request.GetRequestStream()))
            {
                //initiate the request
                JavaScriptSerializer serializer = new JavaScriptSerializer();
                var resToWrite = serializer.Deserialize<Dictionary<string, object>>(json);
                streamWriter.Write(restoWrite);
                streamWriter.Flush();
                streamWriter.Close();
            }

            // Get the response.
            WebResponse response = request.GetResponse();                
            var streamReader = new StreamReader(response.GetResponseStream());                
            var result = streamReader.ReadToEnd();

I am new to WCF service. I don't know how to pass this data to Rest service. Here my input data has been differed every call.

Rest Service code

[ServiceContract]
 public interface IRestServiceImpl
 {
   [OperationContract]
        [WebInvoke(Method = "POST",
            ResponseFormat = WebMessageFormat.Json,
            RequestFormat = WebMessageFormat.Json,
            BodyStyle = WebMessageBodyStyle.Bare,
            UriTemplate = "jsoninputdata")]
    string jsoninputdata(List<Dictionary<string, object>> rData);
 }    

 public class RestServiceImpl : IRestServiceImpl
 {    
      public jSonResponseData jsoninputdata(List<Dictionary<string, object>> rData)
      {       
          string json = JsonConvert.SerializeObject(rData);
          //Do my stuff here.....    
          return ojSonRes; // Here i need to return my output mentioned below
      }
  }

And i need to return data (output) like below,

Condition 1: If both saved in db without any error,

{"sjSonData":[{ "success":true }]}

Condition 2: Suppose any one data failed to save in database then

{"sjSonData":[ { "log_Id":1, "success":false }, { "log_Id":2, "success":true } ]}

Now I am getting result like,

{"sjSonData":"{}"}

Am i doing anything wrong!!!!! and also please explain what are all changes i have to do in web.config file.