How to store data in Isolated Storage in Windows Phone 7

Question

I am building an app for windows phone 7.
I am using data which is coming from the web service which i want to save in isolated storage so that next time when the data is viewed it shows the data even when offline.

My cs file is:

public about()
{
    InitializeComponent();

    KejriwalService.aapSoapClient myclient = new KejriwalService.aapSoapClient();
    myclient.getarvindAboutCompleted += new EventHandler<KejriwalService.getarvindAboutCompletedEventArgs>(myclient_getarvindAboutCompleted);
    myclient.getarvindAboutAsync();        
}

void myclient_getarvindAboutCompleted(object sender, KejriwalService.getarvindAboutCompletedEventArgs e)
{
    var data = e.Result;

    XElement xml = XElement.Parse(data);

    aboutview.Text = xml.Elements("UserDetails").Elements("about_details").First().Value;
}

Answer 1

One of the easiest way to store data is to store them in the IsolatedStorageSettings. You can make a property for this purpose:

        string PropertyName
        {
            get
            {
                var settings = System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings;
                if (settings.Contains("valueKeyName"))
                    return (string)settings["valueKeyName"];
                else
                    return null;
            }
            set
            {
                var settings = System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings;
                if (settings.Contains("valueKeyName"))
                    settings["valueKeyName"] = value;
                else
                    settings.Add("valueKeyName", value);
            }
        }

IsolatedStorageSettings store pairs key-value in the dictionary. You should just choose key name of your storing value and name of the property.

Answer 2

with the help ofIsolatedStorageSettings you could save your data in the form of key value paire like this:

 var Iso_settings = System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings;   
if (!Iso_settings.Contains("yourDataKey"))
    {
      Iso_settings.Add("yourDataKey", yourDataValue);
      Iso_settings.Save()//This will save your data in isolated storage.
    }

Answer 3

Don't go for Sqlite if you don't want offline data and to store Data two best method is to use Isolated Storage and using linq so if you have only 1-2 data members and you have to change there values then you can use Isolated Storage otherwise go for linq if you have 2-3 columns and rows to store data in form of Tables.
Isolated storage is used like this:

try
{
    if (IsolatedStorageSettings.ApplicationSettings.Contains("email_id"))
    {
        IsolatedStorageSettings.ApplicationSettings["email_id"] = emailid;
        IsolatedStorageSettings.ApplicationSettings["password"] = password;
        IsolatedStorageSettings.ApplicationSettings.Save();
    }
    else
    {
        IsolatedStorageSettings.ApplicationSettings.Add("email_id", emailid);
        IsolatedStorageSettings.ApplicationSettings.Add("password", password);
        IsolatedStorageSettings.ApplicationSettings.Save();
    }
}
catch (Exception ex)
{
    Console.WriteLine(ex.InnerException);
}

For linq http://www.codeproject.com/Articles/43025/A-LINQ-Tutorial-Mapping-Tables-to-Objects go for the link.