qhmes/yy-admin-master/YY.Admin.Core/FluentValidation/PasswordBoxHelper.cs

using System.Windows;
using System.Windows.Controls;

namespace YY.Admin.Core.FluentValidation
{
    public static class PasswordBoxHelper
    {
        public static readonly DependencyProperty PasswordProperty =
            DependencyProperty.RegisterAttached(
                "Password",
                typeof(string),
                typeof(PasswordBoxHelper),
                new FrameworkPropertyMetadata(string.Empty, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnPasswordPropertyChanged));

        public static readonly DependencyProperty AttachProperty =
            DependencyProperty.RegisterAttached(
                "Attach",
                typeof(bool),
                typeof(PasswordBoxHelper),
                new System.Windows.PropertyMetadata(false, OnAttachChanged));

        public static void SetAttach(DependencyObject dp, bool value)
        {
            dp.SetValue(AttachProperty, value);
        }

        public static bool GetAttach(DependencyObject dp)
        {
            return (bool)dp.GetValue(AttachProperty);
        }

        public static string GetPassword(DependencyObject dp)
        {
            return (string)dp.GetValue(PasswordProperty);
        }

        public static void SetPassword(DependencyObject dp, string value)
        {
            dp.SetValue(PasswordProperty, value);
        }

        private static void OnAttachChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            if (sender is PasswordBox passwordBox)
            {
                if ((bool)e.OldValue)
                {
                    passwordBox.PasswordChanged -= PasswordChanged;
                }

                if ((bool)e.NewValue)
                {
                    passwordBox.PasswordChanged += PasswordChanged;
                }
            }
        }

        private static void OnPasswordPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            if (sender is PasswordBox passwordBox)
            {
                // 防止无限循环
                passwordBox.PasswordChanged -= PasswordChanged;

                if (passwordBox.Password != (e.NewValue ?? ""))
                {
                    passwordBox.Password = e.NewValue?.ToString() ?? "";
                }

                passwordBox.PasswordChanged += PasswordChanged;
            }
        }

        private static void PasswordChanged(object sender, RoutedEventArgs e)
        {
            if (sender is PasswordBox passwordBox)
            {
                SetPassword(passwordBox, passwordBox.Password);
            }
        }
    }
}