IsolatedStorageSettings in Windows Phone

 

IsolatedStorageSettings

Save Data Into Setting:

/// <summary>

/// Save Value into Setting File

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button1_Click(object sender, RoutedEventArgs e)

{

IsolatedStorageSettings.ApplicationSettings.Add("Email", txtname.Text);

 

}

Retrieve Data from Setting:

/// <summary>

/// Retrieve Value from Setting file

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button2_Click(object sender, RoutedEventArgs e)

{

 

if (IsolatedStorageSettings.ApplicationSettings.Contains("Email") == true)

{

txtemail.Text = IsolatedStorageSettings.ApplicationSettings["Email"].ToString();

}

else

{

MessageBox.Show("Value not found");

}

}

 

Save Object into Setting:

/// <summary>

/// Class have two property

/// </summary>

public class Student

{

 

public string Name { get; set; }

public string email { get; set; }

 

}

/// <summary>

/// Store object into Setting

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button1_Click_1(object sender, RoutedEventArgs e)

{

Student os = new Student { Name = txtname.Text, email = txtemail.Text };

IsolatedStorageSettings.ApplicationSettings.Add("Stud", os);

}

Retieve Object from setting

/// <summary>

/// Retrieve Object from Setting

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button2_Click_1(object sender, RoutedEventArgs e)

{

Student os;

IsolatedStorageSettings.ApplicationSettings.TryGetValue<Student>("Stud", out os);

txtname.Text = os.Name;

txtemail.Text = os.email;

}

 

Data Binding

Student os;

IsolatedStorageSettings.ApplicationSettings.TryGetValue<Student>("Stud", out os);

txtname.Text = os.Name;

txtemail.Text = os.email;

this.DataContext = os;

 

<TextBlock  Height="39" HorizontalAlignment="Left" Margin="90,439,0,0" Name="txtbname" Text="{Binding Name}" VerticalAlignment="Top" Width="251" />

<TextBlock Height="36" HorizontalAlignment="Left" Margin="90,509,0,0" Name="txtbemail" Text="{Binding email}" VerticalAlignment="Top" Width="263" />

 

Windows Mobile Isolated Storage Beginners

WP7 Isolated Storage

●Isolated storage is used to store local text file a on Windows Phone 7

●If you know File concept in C#.net its easy for you

●If you have two applications that work with the same data. data you can't share. You

can use web service/WCF for sharing data

●Windows Phone applications do not have an imposed quota size because the

requirements for each application's scenario are different. So storage resources on

a phone are limited so applications should only store necessary data. When a

Windows Phone has only 10% of storage space remaining, user will receive

notification

●Isolated storage Action

➔Create File

➔Read File

➔Delete File

➔Create Folder

➔Delete Folder

Silverlight Windows Phone store following way

●Settings: Store data as key/value pairs by using the IsolatedStorageSettings class.

●Files and folders: Store files and folders by using the IsolatedStorageFile class.

●Relational data: Store relational data in a local database by using LINQ to SQL.

How to take Backup isolated Storage :

http://msdn.microsoft.com/en-us/library/hh286408(v=vs.92).aspx

Name Space:

using System.IO;

using System.IO.IsolatedStorage

Create Directory:

Code:

IsolatedStorageFile os = IsolatedStorageFile.GetUserStoreForApplication();

os.CreateDirectory(<dirname>);   //

//List of Directory Name

foreach (object dir in os.GetDirectoryNames())

{

MessageBox.Show(dir.ToString());

}

Screen:

   // Delete Directory

    os.DeleteDirectory(txtdirname.Text);

//Check Directory is exists

            if (os.DirectoryExists(txtdirname.Text) == true)

            {

                MessageBox.Show("Hi directory avl");

            }

  //Create File

IsolatedStorageFile os = IsolatedStorageFile.GetUserStoreForApplication();

StreamWriter osw=new StreamWriter(new

IsolatedStorageFileStream("js.txt",FileMode.CreateNew,os);

//create File and Save data

IsolatedStorageFile os = IsolatedStorageFile.GetUserStoreForApplication();

StreamWriter osw=new StreamWriter(new

IsolatedStorageFileStream("js1.txt",FileMode.Create,os));

osw.Write("hi welcome");

osw.Flush();

            osw.Close();

//Replace File :

IsolatedStorageFile os = IsolatedStorageFile.GetUserStoreForApplication();

StreamWriter osw = new StreamWriter(os.OpenFile("js1.txt",

FileMode.Open,FileAccess.Write));

osw.Write("hi welcome");

osw.Flush();

osw.Close();

//Read Data:

IsolatedStorageFile os = IsolatedStorageFile.GetUserStoreForApplication();

StreamReader osr = new StreamReader(os.OpenFile("js1.txt", FileMode.Open,

FileAccess.Read));

txtdirname.Text = osr.ReadToEnd();

osr.Close();

What's New in Visual Studio 2012 RC

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