Question

我正在开发一个窗户电话应用程序。这要求用户登录。

在标识页上,用户必须进入密码。

现在我想的是,我给用户一个检查箱,在选择时,该箱应显示密码的特性。

我没有看到密码盒上的任何财产显示密码特征。

请建议采取某种办法。

Answer 1

Don tink that is possible with PasswordBox... only a consider, but You may do the same results using aidden textBox and when theuser/2005/6s theeckBox, You onlyidden the PasswordBox and show the textBox; if he分再次点击, Yous rechange their Visibility state, and so on...

<><>Edit>>

在这里,是怎样的!

仅增加一页,将内容小组改成一个SackPanel,并添加这一XAML代码:

<PasswordBox x:Name="MyPasswordBox" Password="{Binding Text, Mode=TwoWay, ElementName=MyTextBox}"/>
<TextBox x:Name="MyTextBox" Text="{Binding Password, Mode=TwoWay, ElementName=MyPasswordBox}" Visibility="Collapsed" />
<CheckBox x:Name="ShowPasswordCharsCheckBox" Content="Show password" Checked="ShowPasswordCharsCheckBox_Checked" Unchecked="ShowPasswordCharsCheckBox_Unchecked" />

其次,在页码上添加以下内容:

private void ShowPasswordCharsCheckBox_Checked(object sender, RoutedEventArgs e)
{
    MyPasswordBox.Visibility = System.Windows.Visibility.Collapsed;
    MyTextBox.Visibility = System.Windows.Visibility.Visible;

    MyTextBox.Focus();
}

private void ShowPasswordCharsCheckBox_Unchecked(object sender, RoutedEventArgs e)
{
    MyPasswordBox.Visibility = System.Windows.Visibility.Visible;
    MyTextBox.Visibility = System.Windows.Visibility.Collapsed;

    MyPasswordBox.Focus();
}

这些工作很出色,但又做了几件工作,你可以完全做到。

Answer 2

采用缺省密码,不可能执行你想要的特征。

http://social.msdn.microsoft.com/Forums/en/wpf/thread/98d4d4-1463-481f-b8b1-711119a6ba99'rel=“nofollow”http://social.msdn.microsoft.com/Forums/en/wpf/thread/98d0d4d4d4d4d4d4-1463-481f-b8b1-711119a699。

Answer 3

你可以自行控制案文箱的继承,但是,在你以正文取代文本之后,将真实价值储存在网页上的私人变量内。然后,用一个核对箱,你可以分析文本箱的价值是否显示了真实的价值或*的价值。

这不是一个棘手的解决办法,也不是最佳做法,但我认为,如果你愿意的话,它仍然是一种替代办法。

Answer 4

我创建了一个微型和小型机械设备的例子,我也是在现实生活中使用的。注密码不是属地财产,因此不能直接约束。出于安全原因设计的类似内容,详见:。 • 如何对MVVER的密码Box具有约束力

如果你想这样做的话,你就必须利用后面的代码,建立一条通往你的观察模式的桥梁。我不向兑换者提供服务,因为你可能再次使用自己的一套兑换商。如果没有的话,请看一下如何实施。

EnterPasswordWindow.xaml

<Window x:Class="MyDemoApp.Controls.EnterPasswordWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MyDemoApp.Controls"
        mc:Ignorable="d" d:DataContext="{d:DesignInstance local:EnterPasswordViewModel}"
        WindowStartupLocation="CenterOwner" ResizeMode="NoResize" SizeToContent="WidthAndHeight"
        Title="Enter Password">
    <StackPanel Margin="4">
        <TextBlock Margin="4">Please enter a password:</TextBlock>
        <TextBox Margin="4" Text="{Binding Password, UpdateSourceTrigger=PropertyChanged}" Visibility="{Binding ShowPassword, Converter={StaticResource BoolToVisibleConverter}}"/>
        <PasswordBox Margin="4" Name="PasswordBox" Visibility="{Binding ShowPassword, Converter={StaticResource BoolToCollapsedConverter}}" PasswordChanged="PasswordBox_PasswordChanged"/>
        <CheckBox Margin="4" IsChecked="{Binding ShowPassword}">Show password</CheckBox>
        <DockPanel>
            <Button Margin="4" Width="150" Height="30" IsDefault="True" IsEnabled="{Binding Password, Converter={StaticResource StringIsNotNullOrEmptyConverter}}" Click="Button_Click">OK</Button>
            <Button Margin="4" Width="150" Height="30" IsCancel="True" HorizontalAlignment="Right">Cancel</Button>
        </DockPanel>
    </StackPanel>
</Window>

EnterPasswordWindow.xaml.cs

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

namespace MyDemoApp.Controls
{
    /// <summary>
    /// Interaction logic for EnterPasswordWindow.xaml
    /// </summary>
    public partial class EnterPasswordWindow : Window
    {
        public EnterPasswordWindow()
        {
            InitializeComponent();
            DataContext = ViewModel = new EnterPasswordViewModel();
            ViewModel.PropertyChanged += ViewModel_PropertyChanged;
        }

        public EnterPasswordViewModel ViewModel { get; set; }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = true;
            Close();
        }

        private void ViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (!mSuppressPropertyChangedEvent && e.PropertyName == nameof(ViewModel.Password))
            {
                PasswordBox.Password = ViewModel.Password;
            }
        }
        private bool mSuppressPropertyChangedEvent;
        private void PasswordBox_PasswordChanged(object sender, RoutedEventArgs e)
        {
            mSuppressPropertyChangedEvent = true;
            ViewModel.Password = ((PasswordBox)sender).Password;
            mSuppressPropertyChangedEvent = false;
        }
    }
}

EnterPasssword Model.cs

using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace MyDemoApp.Controls
{
    public class EnterPasswordViewModel : INotifyPropertyChanged
    {
        public string Password
        {
            get => mPassword;
            set
            {
                if (mPassword != value)
                {
                    mPassword = value;
                    NotifyPropertyChanged();
                }
            }
        }
        private string mPassword;

        public bool ShowPassword
        {
            get => mShowPassword;
            set
            {
                if (mShowPassword != value)
                {
                    mShowPassword = value;
                    NotifyPropertyChanged();
                }
            }
        }
        private bool mShowPassword;

        public event PropertyChangedEventHandler PropertyChanged;
        private void NotifyPropertyChanged([CallerMemberName]string propertyName = null)
        {
            if (string.IsNullOrEmpty(propertyName))
            {
                return;
            }
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

友情链接