Save and Read Contacts in Windows Phone 7

Introduction

In this article we are going to explore how to save and read contacts in Windows Phone 7. In subsequent details we will learn how to save and display contacts in Windows Phone 7. In this article we will demonstrate how to do this in Windows Phone 7. Further let me explain there are two chooser tasks which are used to complete both tasks named SaveContactTask and AddressChooserTask; these two tasks are responsible for doing such a task. SaveContactTask is a sealed class with default properties which we have to implement. The SaveContactsTask and AddressChooserTask classes are also sealed classes with some properties. So to do all that use the steps shown below.

Step 1: In this step first of all we have to create a Windows Phone application; let's see how to create it.

• Go to Visual Studio 2010
• File->New->Project
• Select the template named as Silverlight for Windows Phone
• Select the Windows Phone application
• Give it a name as you want.

Step 2: In this step we will see the code for the MainPage.xaml.cs file which is shown below.

Code:

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 Microsoft.Phone.Tasks;
namespace Mynewapp

{

public partial class MainPage : PhoneApplicationPage

{

SaveContactTask MyConatct_Task = new SaveContactTask();

AddressChooserTask MyAddress_Task = new AddressChooserTask();

// Constructor

public MainPage()

{

InitializeComponent();

textBox1.Text = "";

textBox2.Text = "";

textBox3.Text = "";

textBox4.Text = "";

textBox5.Text = "";

this.MyConatct_Task.Completed += new EventHandler<SaveContactResult>(MyConatct_Task_Completed);

this.MyAddress_Task.Completed+=new EventHandler<AddressResult>(MyAddress_Task_Completed);

}

void MyConatct_Task_Completed(object sender, SaveContactResult e)

{

switch (e.TaskResult)

{

case TaskResult.OK:

MessageBox.Show("Your Contact is successfully saved.");

break;

case TaskResult.Cancel:

MessageBox.Show("The user canceled the task.");

break;

default:

break;

}

}

void MyAddress_Task_Completed(object sender, AddressResult e)

{

switch (e.TaskResult)

{

case TaskResult.OK:

// Fetch the selected Contact

MessageBox.Show(e.DisplayName + "\n\n" + e.Address);

break;

case TaskResult.Cancel:

// Contact Selection Operation Cancelled

MessageBox.Show("Address Chooser Task interrupted by the user");

break;

default:

break;

}

}

private void button1_Click(object sender, RoutedEventArgs e)

{

// Set the optional properties that you want to auto populate with

MyConatct_Task.FirstName = textBox1.Text;

MyConatct_Task.LastName = textBox2.Text;

MyConatct_Task.Company = textBox3.Text;

MyConatct_Task.JobTitle = textBox4.Text;

MyConatct_Task.WorkAddressCity = textBox5.Text;

//MyConatct_Task.Completed += MyConatct_Task_Completed;

// Call the Show method to open the Contact Screen

MyConatct_Task.Show();

}
private void button2_Click(object sender, RoutedEventArgs e)

{

MyAddress_Task.Show();

}
}
}

Step 3: In this step we will see the code for the Mainpage.xaml file which is shown below.

Code:

<phone:PhoneApplicationPage

x:Class="Mynewapp.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"