Application Settings in WPF

1. Name   (Name of the Setting)
2. Type   (Data Type of the Setting)
3. Value   (The information which will get store in Setting)
4. Scope  (User or Application)

1. Go to the Solution Explorer
2. Double-click My Project
3. Go to the Settings tab

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
    <Grid>
        <ListBox Margin="15,15,0,0" Name="listBox1" Height="78"
                 HorizontalAlignment="Left" VerticalAlignment="Top" Width="107">
            <ListBoxItem>New York</ListBoxItem>
            <ListBoxItem>Sydney</ListBoxItem>
            <ListBoxItem>London</ListBoxItem>
            <ListBoxItem>Other</ListBoxItem>
        </ListBox>
        <Button Margin="15,106,110,130" Name="button1">Change User City</Button>
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="136,15,0,0" Name="TextBlock1" Text="TextBlock" VerticalAlignment="Top" />
    </Grid>
</Window>    

Class MainWindow
    Dim astring As String
    Public Sub New()

        InitializeComponent()

        Me.Title = My.Settings.UserName
        TextBlock1.Text = "Previously Selected City " + My.Settings.UserCity

    End Sub

    Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles button1.Click

        If Not listBox1.SelectedItem Is Nothing Then
            TextBlock1.Text = "Previously Selected City " + astring
            astring = CType(listBox1.SelectedItem, ListBoxItem).Content.ToString
            My.Settings.UserCity = astring
            My.Settings.Save()
        End If
    End Sub
End Class

class MainWindow
{
	string astring;

	public MainWindow()
	{
		InitializeComponent();

		this.Title = My.Settings.UserName;
		TextBlock1.Text = "Previously Selected City " + My.Settings.UserCity;

	}


	private void  // ERROR: Handles clauses are not supported in C#
button1_Click(System.Object sender, System.Windows.RoutedEventArgs e)
	{
		if ((listBox1.SelectedItem != null)) {
			TextBlock1.Text = "Previously Selected City " + astring;
			astring = ((ListBoxItem)listBox1.SelectedItem).Content.ToString;
			My.Settings.UserCity = astring;
			My.Settings.Save();
		}
	}
}