JSON WEB service that accepts parameters from an android apps

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VB

Mobile

Android

JSON

webservice

Hi,
I need to receive three parmeter into an webservice in an json format , from an android apps . here is my code .

Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols

<System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="http://tempuri.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> 
Public Class Booking
    Inherits System.Web.Services.WebService
   

<webmethod()>
<system.web.script.services.scriptmethod(usehttpget:>
ResponseFormat:=Script.Services.ResponseFormat.Json)> _
  Public Function MobileBooking(ByVal Pickuplocation As String, ByVal Droplocation As String, ByVal latitude As String) As String
 Dim conObj As New ConnectionCls
        Dim clsConObj As New ConnectionCls
        Dim dts As String
        Dim ob(2) As Object
        ob(0) = Pickuplocation
        ob(1) = Droplocation
        ob(2) = latitude
        Try

dts =test.DataAccess.ExecuteNonQuery(clsConObj.getConnectionString, "Web_MobileBookingInsert", ob)
            If dts.ToString = -1 Then
                Return "Insert Failed"
            Else

                Return "Insert Sucessful"
            End If

The parameter will be passed from the android to the webservice in an jason format,is the above is corect for receiving the parameter