Credential locker

The credential locker is a secure place to store user credentials that roams between devices based on application, so if the user needs to provide credentials to access a webservice they can be stored in the credential locker securely and used in subsequent application launches and between devices.

<Page

    x:Class="pc.CredentialockerExample.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

        <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">

            <ComboBox x:Name="Resources_ComboBox"

                      SelectionChanged="Resources_ComboBox_SelectionChanged" />

            <TextBox x:Name="Resource_TextBox" PlaceholderText="Resource" />

            <TextBox x:Name="User_TextBox" PlaceholderText="User name" />

            <TextBox x:Name="Pass_TextBox" PlaceholderText="Password" />

            <Button x:Name="Save_Button" Click="Save_Button_Click" Content="Save"/>

        </StackPanel>

    </Grid>

</Page>

above we build a simple UI for collecting credentials and below we store them in the PasswordVault.

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

using Windows.Security.Credentials;

using System.Collections.Generic;

namespace pc.CredentialockerExample

{

    public sealed partial class MainPage : Page

    {

        public MainPage()

        {

            InitializeComponent();

            var vault = new PasswordVault();

            var pcList = vault.RetrieveAll();

            foreach (var pc in pcList)

                Resources_ComboBox.Items.Add(pc.Resource);

        }

        void Save_Button_Click(object sender, RoutedEventArgs e)

        {

            var vault = new PasswordVault();

            var resource = Resource_TextBox.Text;

            var user = User_TextBox.Text;

            var pass = Pass_TextBox.Text;

            var credentials = new PasswordCredential(resource, user, pass);

            vault.Add(credentials);

        }

        private void Resources_ComboBox_SelectionChanged(object sender,

                                                    SelectionChangedEventArgs e)

        {

            var cb = sender as ComboBox;

            var vault = new PasswordVault();

            IReadOnlyList<PasswordCredential> pcs =

                vault.FindAllByResource(cb.SelectedValue.ToString());

            Resource_TextBox.Text = pcs[0].Resource;

            User_TextBox.Text = pcs[0].UserName;

            Pass_TextBox.Text = pcs[0].Password;

        }

    }

}

now the password vault is a bit tricky because it's queried by both the resource name and the username. we just assume that the resource is a unique key, but you'd have to write this restriction in yourself, or you could inherit from the passwordvault and create your own version.