Remember me checkbox functionality in windows phone 8 - windows-phone-8

Question

How to add "Remember Me" Login Functionality?
Code:
<Grid x:Name="LayoutRoot" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<StackPanel Margin="70,50,70,50" Orientation="Vertical">
<TextBox Name="txtName"/>
<PasswordBox Name="txtPassword"/>
<Button Tap="Button_Tap"/>
</StackPanel>
<StackPanel Margin="70,430">
<CheckBox Name="cbStayIn" Content="StayIn"/>
</StackPanel>
</Grid>
When User checked in StayIn checkbox it should hold values of name and password.
Give Me Suggestion.

Answer 1

Responding your comment, it seems that the logic is a bit off. Your checkbox will be in it's default state regardless user checked it or not the last time he logged in. Try this way :
//on page load :
InitializeComponent();
//check if remember me checked the last time user login
bool stayin = false;
userSettings.TryGetValue<bool>("stayin", stayin);
//if checked, load username & password from iso store
if (stayin)
{
string Email = (string)userSettings["email"];
txtName.Text = Email;
string Password = (string)userSettings["password"];
txtPassword.Password = Password;
}
......
//on login button clicked
private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
//if remember me checked,
//save mail, password, and stayin = true in iso store
if (cbStayIn.IsChecked == true)
{
userSettings.Add("email", txtName.Text);
userSettings.Add("password", txtPassword.Password);
userSettings.Add("stayin", true);
}
}

Answer 2

Hope below code helps. dint compile the code, pardon the compilation Errors
If(checkbox.Selected == true)
{
//check if the UserName and PassWord are already stored
if (IsolatedStorageSettings.ApplicationSettings.Contains("userName"))
{
UserName.Text = IsolatedStorageSettings.ApplicationSettings["userName"].ToString();
}
else
{
IsolatedStorageSettings.ApplicationSettings["userName"] = UserNameTextBox.Text;
IsolatedStorageSettings.ApplicationSettings.Save();
}
if (IsolatedStorageSettings.ApplicationSettings.Contains("Password"))
{
PasswordBox.Text = IsolatedStorageSettings.ApplicationSettings["Password"].ToString();
}
else
{
IsolatedStorageSettings.ApplicationSettings["Password"] = PasswordBox.Text;
IsolatedStorageSettings.ApplicationSettings.Save();
}
}

Answer 3

using System.IO.IsolatedStorage;
namespace iso
{
public partial class LoginPage : PhoneApplicationPage
{
private IsolatedStorageSettings userSettings = IsolatedStorageSettings.ApplicationSettings;
public LoginPage()
{
InitializeComponent();
bool stayin = false;
// userSettings.TryGetValue<bool>("stayin", stayin);
userSettings.TryGetValue<bool>("stayin", out stayin);
if (stayin)
{
string Email = (string)userSettings["email"];
txtName.Text = Email;
string Password = (string)userSettings["password"];
txtPassword.Password = Password;
}
}
private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
if (cbStayIn.IsChecked == true)
{
userSettings.Add("email", txtName.Text);// Error :An exception of type 'System.ArgumentException' occurred in mscorlib.ni.dll but was not handled in user code
userSettings.Add("password", txtPassword.Password);
userSettings.Add("stayin", true);
}
}
}
}

Answer 4

public LoginPage()
{
InitializeComponent();
if (cbStayIn.IsChecked == true)
{
if (userSettings.Contains("Name"))
{
txtName.Text = userSettings["Name"].ToString();
}
if (userSettings.Contains("Password"))
{
txtPassword.Password = userSettings["Password"].ToString();
}
}
}
private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
//
try
{
if ((userSettings.Contains("UserName")) == false)
{
userSettings.Add("Name", txtName.Text);
}
if ((userSettings.Contains("Pass")) == false)
{
userSettings.Add("Password", txtPassword.Password);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}