json response

 var responseBuf = reader.ReadToEnd();
                    String responseJson = Convert.ToString(responseBuf);
                    JArray joResponse = JArray.Parse(responseJson);
                    var EndDate = joResponse[0]["endDate"].ToString();
                    var StartDate = joResponse[0]["startDate"].ToString();
                    var RefundAmount = joResponse[0]["refundAmount"].ToString();
                    var PaymentAmount = joResponse[0]["paymentAmount"].ToString();

                    _EndDate = EndDate;
                    _StartDate = StartDate;
                    _RefundAmount = RefundAmount;
                    _PaymentAmount = PaymentAmount;