How to Save an EMail Address in Windows Phone 7 Via WCF Service

<phone:PhoneApplicationPage
x:Class="Save_Email_App.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
shell:SystemTray.IsVisible="True">
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="Vijay's Save Email Application" FontFamily="Verdana" FontSize="22" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="Windows 7 Phone" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<TextBox Height="72" HorizontalAlignment="Left" Margin="109,84,0,0" Name="textBox1" VerticalAlignment="Top" Width="279" />
<TextBlock Height="30" FontFamily="Verdana" FontSize="22" HorizontalAlignment="Left" Margin="142,48,0,0" Name="textBlock1" Text="Please Enter Email" VerticalAlignment="Top" />
<Button Content="Save" FontFamily="Verdana" FontSize="22" Height="72" HorizontalAlignment="Left" Margin="168,162,0,0" Name="button1" VerticalAlignment="Top" Width="160" Click="button1_Click" />
<TextBlock Height="30" HorizontalAlignment="Left" Margin="202,561,0,0" Name="textBlock2" FontFamily="Verdana" FontSize="22" VerticalAlignment="Top" />
</Grid>
</Grid>

<!--Sample code showing usage of ApplicationBar-->
<!--<phone:PhoneApplicationPage.ApplicationBar>
<shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
<shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="Button 1"/>
<shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="Button 2"/>
<shell:ApplicationBar.MenuItems>
<shell:ApplicationBarMenuItem Text="MenuItem 1"/>
<shell:ApplicationBarMenuItem Text="MenuItem 2"/>
</shell:ApplicationBar.MenuItems>
</shell:ApplicationBar>
</phone:PhoneApplicationPage.ApplicationBar>-->

</phone:PhoneApplicationPage>

The Complete Code of MainPage.xaml.cs looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Save_Email_App.ServiceReference1;
using Microsoft.Phone.Tasks;

namespace Save_Email_App
{
public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
InitializeComponent();
}

private void button1_Click(object sender, RoutedEventArgs e)
{
if (textBox1.Text == "")
{
textBlock2.Text = "Please Enter Email";
textBlock2.Foreground = new SolidColorBrush(Colors.Red);
}
else
{
Service1Client objClient = new Service1Client();
objClient.EmailCompleted += new EventHandler<EmailCompletedEventArgs>(EmailCall);
objClient.EmailAsync(textBox1.Text);
}
}

static void EmailCall(object sender, EmailCompletedEventArgs e)
{
SaveEmailAddressTask objEmailTask = new SaveEmailAddressTask();
objEmailTask.Email = e.Result;
objEmailTask.Show();
}
}
}

The Output of the Application looks like this:

I hope this article is useful for you. I look forward for your comments and feedback.