Windows Phone 8 中的记住我复选框功能

Question

如何添加“记住我”登录功能？

代码：

<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>

当用户选中 StayIn 复选框时，它应该保存名称和密码的值。

给我建议。

Answer 1

回复您的评论，似乎逻辑有点不对劲。无论用户上次登录是否选中，您的复选框都将处于默认状态。试试这种方式：

//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

希望下面的代码有所帮助。 dint 编译代码，原谅编译错误

 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

公共登录页面（）

{

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)

{ // 尝试 { if ((userSettings.Contains("UserName")) == false) { userSettings.Add("名称", txtName.Text); }

            if ((userSettings.Contains("Pass")) == false)
            {
                userSettings.Add("Password", txtPassword.Password);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }
    }

}