Windows Store Apps and SQL Azure Database (C# , Windows Azure)

CREATE TABLE [dbo].[customer](
	[CustomerID] [varchar](4) NOT NULL,
	[Name] [varchar](50) NULL,
	[Email] [varchar](50) NULL,
	[CountryCode] [varchar](2) NULL,
	[Budget] [float] NULL,
	[Used] [float] NULL,
 CONSTRAINT [PK_customer] PRIMARY KEY CLUSTERED 
(
	[CustomerID] ASC
)
);

INSERT INTO [customer] VALUES ('C001', 'Win Weerachai', '[email protected]', 'TH', 1000000, 600000);
INSERT INTO [customer] VALUES ('C002', 'John  Smith', '[email protected]', 'UK', 2000000, 800000);
INSERT INTO [customer] VALUES ('C003', 'Jame Bond', '[email protected]', 'US', 3000000, 600000);
INSERT INTO [customer] VALUES ('C004', 'Chalee Angel', '[email protected]', 'US', 4000000, 100000);

using System.Data;
using Newtonsoft.Json;
using System.Data.SqlClient;

            strConnString = "Driver={SQL Server Native Client 10.0};Server=tcp:bc6hela9fr.database.windows.net,1433;Database=thaicreate-db;Uid=thaicreate-user@bc6hela9fr;Pwd=password@123;Encrypt=yes;Connection Timeout=30;";
            strSQL = "SELECT * FROM customer";

            objConn.ConnectionString = strConnString;

            objCmd.Connection = objConn;
            objCmd.CommandText = strSQL;
            objCmd.CommandType = CommandType.Text;

string json = JsonConvert.SerializeObject(dt, Formatting.Indented);
return json;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

using System.Data;
using Newtonsoft.Json;
using System.Data.SqlClient;

namespace myAppWeb
{
    /// <summary>
    /// Summary description for myWSV
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    // [System.Web.Script.Services.ScriptService]
    public class myWSV : System.Web.Services.WebService
    {

        [WebMethod]
        public string getCustomerData()
        {
            SqlConnection objConn = new SqlConnection();
            SqlCommand objCmd = new SqlCommand();
            SqlDataAdapter dtAdapter = new SqlDataAdapter();

            DataSet ds = new DataSet();
            DataTable dt;
            String strConnString, strSQL;


            strConnString = "Driver={SQL Server Native Client 10.0};Server=tcp:bc6hela9fr.database.windows.net,1433;Database=thaicreate-db;Uid=thaicreate-user@bc6hela9fr;Pwd=password@123;Encrypt=yes;Connection Timeout=30;";
            strSQL = "SELECT * FROM customer";

            objConn.ConnectionString = strConnString;

            objCmd.Connection = objConn;
            objCmd.CommandText = strSQL;
            objCmd.CommandType = CommandType.Text;

            dtAdapter.SelectCommand = objCmd;

            dtAdapter.Fill(ds);
            dt = ds.Tables[0];

            dtAdapter = null;
            objConn.Close();
            objConn = null;

            string json = JsonConvert.SerializeObject(dt, Formatting.Indented);
            return json;
        }

    }
}

<Page
    x:Class="WindowsStoreApps.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:WindowsStoreApps"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">


    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

        <Button x:Name="btnSubmit" Content="Submit" HorizontalAlignment="Left" Margin="137,68,0,0" VerticalAlignment="Top" FontSize="20" Width="120" Click="btnSubmit_Click"/>

        <ListView x:Name="myListView" HorizontalAlignment="Left" Height="386" Margin="140,165,0,0" VerticalAlignment="Top" Width="907">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" Margin="0,0,0,17">
                        <StackPanel Width="80">
                            <TextBlock Text="{Binding CustomerID}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0" FontFamily="Global User Interface"/>
                        </StackPanel>
                        <StackPanel Width="150">
                            <TextBlock Text="{Binding Name}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0"/>
                        </StackPanel>
                        <StackPanel Width="300">
                            <TextBlock Text="{Binding Email}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0"/>
                        </StackPanel>
                        <StackPanel Width="50">
                            <TextBlock Text="{Binding CountryCode}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0"/>
                        </StackPanel>
                        <StackPanel Width="100">
                            <TextBlock Text="{Binding Budget}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0"/>
                        </StackPanel>
                        <StackPanel Width="100">
                            <TextBlock Text="{Binding Used}" TextWrapping="Wrap" FontSize="20" Foreground="#FFBFB9B9" Margin="5,0,0,0"/>
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>

    </Grid>

</Page>