【WPF】自定义PassWordBox (可以绑定的) 、SecureString类型吗？

目的

自定义一个可以绑定的密码输入框

知识点：自定义控件、     SecureString类型

System.Security.SecureString(表示应保密的文本) 保存非托管内存中，需要用指针逐个字符的读取。

正常的String类型值,在脱离开作用域之后,其值在内存中并不会被立即销毁,这时如果有人恶意扫描你的内存,程序中所保存的机密信息就会暴露;于是就有了System.Security.SecureString,SecureString表示一个应保密的文本,它在初始化时就已被加密，并且脱离作用域后会被立即销毁;

 自定义用户控件

1、添加自定义用户控件类

 2、xaml代码

<UserControl x:Class="Login.Resources.CustomeControls.PasswordBoxBingable"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Login.Resources.CustomeControls"
             mc:Ignorable="d" 
             d:DesignHeight="40" d:DesignWidth="300">
    <PasswordBox x:Name="Psb"
                
                 VerticalContentAlignment="Center"
                 Padding="10,0,0,0"/>
</UserControl>

C#代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Login.Resources.CustomeControls
{
    /// <summary>
    /// BingablePassword.xaml 的交互逻辑
    /// </summary>
    /// 
    public partial class PasswordBoxBingable : UserControl
    {
        public static readonly DependencyProperty PasswordProperty =
            DependencyProperty.Register("Password", typeof(SecureString), typeof(PasswordBoxBingable));
        public SecureString Password
        {
            get { return (SecureString)GetValue(PasswordProperty); }
            set { SetValue(PasswordProperty, value); }
        }
        public PasswordBoxBingable()
        {
            InitializeComponent();
            Psb.PasswordChanged += OnPasswordChanged;
        }

        private void OnPasswordChanged(object sender, RoutedEventArgs e)
        {
            Password = Psb.SecurePassword;
        }
    }
}

显示

 应用自定义控件

标签：SecureString,控件,自定义,Windows,PassWordBox,System,using
来源： https://www.cnblogs.com/cdaniu/p/16655958.html