Windows Phone Get Retrieving selected customer Data list from Web Server php/mysql

<?php
  
	$objConnect = mysql_connect("localhost","root","");
	$objDB = mysql_select_db("mydatabase");
	
  if (isset($_GET["scustomerID"])) {
  
  $customer_id = $_GET['scustomerID'];
  
  $result = mysql_query("SELECT * FROM pim_productdeal where customer_id= $customer_id") or die(mysql_error());
  
	//$strSQL = "SELECT * FROM pim_productdeal WHERE customer_id = 1 ";

	$objQuery = mysql_query($result);
	$intNumField = mysql_num_fields($objQuery);
	$resultArray = array();
	while($obResult = mysql_fetch_array($objQuery))
	{
		$arrCol = array();
		for($i=0;$i<$intNumField;$i++)
		{
			$arrCol[mysql_field_name($objQuery,$i)] = $obResult[$i];
		}
		array_push($resultArray,$arrCol);
	}
	
	mysql_close($objConnect);
	
	echo json_encode($resultArray);
  }
?>

if (LoginPage.strcustomer_id_k == null)
            {
                MessageBox.Show("Please add any product to watchlist");
                this.NavigationService.Navigate(new Uri(string.Format("/MainPage.xaml?selectedItem="), UriKind.Relative));
            }
            else
            {
                string url = "http://192.168.2.75/Login/getData.php";
                Uri uri = new Uri(url);
                client = new WebClient();
                client.AllowReadStreamBuffering = true;

                client.DownloadStringCompleted += client_DownloadStringCompleted;
                client.DownloadProgressChanged += client_DownloadProgressChanged;

                client.DownloadStringAsync(uri);

                //*** SystemTray ProgressBar ***'
                prog = new ProgressIndicator();
                prog.IsVisible = true;
                prog.IsIndeterminate = true;
                prog.Text = "Downloading....";
                SystemTray.SetProgressIndicator(this, prog);
            }

 private void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            

            if (e.Cancelled == false & e.Error == null)
            {
                
                StringBuilder postData = new StringBuilder();
                postData.AppendFormat("{0}={1}", "scustomerID", HttpUtility.UrlEncode(LoginPage.strcustomer_id_k));
                Member.customer_id = LoginPage.strcustomer_id_k;
                Member deserializedMember = new Member();
               
                MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(e.Result));
                ObservableCollection<Member> list = new ObservableCollection<Member>();
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(ObservableCollection<Member>));
                list = (ObservableCollection<Member>)serializer.ReadObject(ms);

                List<Member> myCustomer = new List<Member>();
                foreach (Member cm in list)
                {
                    string scustomerID = cm.customer_id.ToString();
                    string sproductID = cm.product_id.ToString();
                    string sproduct_name = cm.product_name.ToString();
                    string sproduct_image = cm.product_image.ToString();
                    string starget_price = cm.target_price.ToString();
                    string sretailer = cm.retailer.ToString();
                    string speriod = cm.period.ToString();
                    string smobile = cm.mobile.ToString();

                    myCustomer.Add(new Member(scustomerID, sproductID, sproduct_name, sproduct_image, starget_price, sretailer, speriod, smobile));
                }

                this.CustomerList.ItemsSource = myCustomer;

               

                prog.IsVisible = false;
            }

        }