问WPF C#文本框自动保存函数

EN

YourAppID.Properties.Settings.Default.DataToSave = TextBox.Text;

TextBox.Text = YourAppID.Properties.Settings.Default.DataToSave;

string filePath = System.IO.Path.Combine(
    Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
    "MyApp",
    "pw.txt");
// filePath = C:\Users\<username>\AppData\Roaming\MyApp\pw.txt (for Windows Vista and later)
// You can also use Environment.SpecialFolder.CommonApplicationData if you want the file to be accessible to all user accounts on the machine.

<Window x:Class="StackOverflow.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        DataContext="{Binding RelativeSource={RelativeSource Self}}"
        Title="MainWindow" Height="auto" Width="auto">
    <Grid>
        <TabControl HorizontalAlignment="Left" Height="469" VerticalAlignment="Top" Width="692">
            <TabItem Header="Logins">
                <Grid Background="#FFFFFF">
                    <TextBox HorizontalAlignment="Left" Height="422" TextWrapping="Wrap" VerticalAlignment="Top"
                             Width="352" Text="{Binding LoginsTextBoxText, UpdateSourceTrigger=PropertyChanged}" />
                </Grid>
            </TabItem>
            <TabItem Header="Cards">
                <Grid Background="#FFFFFF">
                    <TextBox HorizontalAlignment="Left" Height="422" TextWrapping="Wrap" VerticalAlignment="Top"
                             Width="352" />
                </Grid>
            </TabItem>
            <TabItem Header="Renewals">
                <Grid Background="#FFFFFF">
                    <TextBox HorizontalAlignment="Left" Height="422" TextWrapping="Wrap" VerticalAlignment="Top"
                             Width="352" />
                </Grid>
            </TabItem>
        </TabControl>
    </Grid>
</Window>

namespace StackOverflow
{
    using System.ComponentModel;

    public partial class MainWindow : INotifyPropertyChanged
    {
        private string loginsTextBoxText;

        public MainWindow()
        {
            this.InitializeComponent();
        }

        public string LoginsTextBoxText
        {
            get { return this.loginsTextBoxText; }
            set
            {
                this.loginsTextBoxText = value; // Put a breakpoint here and type in the logins textbox
                this.OnPropertyChanged(this.LoginsTextBoxText);
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged(string propertyName = null)
        {
            var handler = this.PropertyChanged;
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}