c# - 在 PasswordBox 中显示密码的好方法

Question

我想知道有人知道如何在 PasswordBox 中显示密码。已阅读您可以将文本框绑定到密码框，但这不是另一种方法。

Answer 1

如果您希望您的密码可见，您应该使用文本框。密码框的唯一功能是屏蔽输入。它不提供额外的功能。也可以在运行时切换文本框和密码框

Answer 2

PasswordBox 控件中没有任何内置属性可以显示密码字符。但是我们可以通过 TextBox 控件在 PasswordBox 中显示 Password 来做到这一点。对于在 WPF 中具有显示/隐藏功能的 PasswordBox。我们将使用两个TextBlock控件，TextBox控件，PasswordBox控件，Image控件

XAML

<Grid>
    <TextBlock Text="Welcome&#xa;To see the Password"
               FontSize="28"
               FontWeight="Bold"
               HorizontalAlignment="Center"
               VerticalAlignment="Top"
               TextAlignment="Center"
               Margin="0,30,0,0" />
    <TextBlock Text="Enter your password"
               FontSize="20"
               HorizontalAlignment="Left"
               Margin="112,160,0,0"
               VerticalAlignment="Top" />
    <TextBox Height="40"
             FontSize="20"
             Padding="5,2,47,0"
             HorizontalAlignment="Left"
             Margin="112,193,0,0"
             Name="txtVisiblePasswordbox"
             VerticalAlignment="Top"
             Width="274" />
    <PasswordBox Height="40"
                 FontSize="20"
                 Padding="5,2,47,0" 
                 HorizontalAlignment="Left"
                 Margin="112,193,0,0"
                 Name="txtPasswordbox"
                 VerticalAlignment="Top"
                 Width="274"
                 PasswordChanged="txtPasswordbox_PasswordChanged" />
    <Image Visibility="Hidden"
           Height="30"
           HorizontalAlignment="Left"
           Name="ImgShowHide"
           Stretch="Fill"
           VerticalAlignment="Top"
           Width="30"
           Margin="351,198,0,0"
           MouseLeave="ImgShowHide_MouseLeave"
           PreviewMouseDown="ImgShowHide_PreviewMouseDown"
           PreviewMouseUp="ImgShowHide_PreviewMouseUp" />
</Grid>

代码背后

string AppPath = Directory.GetCurrentDirectory();
public MainWindow()
{
    InitializeComponent();
    ImgShowHide.Source = new BitmapImage(new Uri(AppPath + "\\img\\clip.jpg"));
}
private void ImgShowHide_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{
    HidePassword();
}

private void ImgShowHide_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
    ShowPassword();
}
private void ImgShowHide_MouseLeave(object sender, MouseEventArgs e)
{
    HidePassword();
}
private void txtPasswordbox_PasswordChanged(object sender, RoutedEventArgs e)
{
    if(txtPasswordbox.Password.Length > 0)
        ImgShowHide.Visibility = Visibility.Visible;
    else
        ImgShowHide.Visibility = Visibility.Hidden;
}

void ShowPassword()
{
    ImgShowHide.Source = new BitmapImage(new Uri(AppPath + "\\img\\cus.jpg"));
    txtVisiblePasswordbox.Visibility = Visibility.Visible;
    txtPasswordbox.Visibility = Visibility.Hidden;
    txtVisiblePasswordbox.Text = txtPasswordbox.Password;
}
void HidePassword()
{
    ImgShowHide.Source = new BitmapImage(new Uri(AppPath + "\\img\\clip.jpg"));
    txtVisiblePasswordbox.Visibility = Visibility.Hidden;
    txtPasswordbox.Visibility = Visibility.Visible;
    txtPasswordbox.Focus();
}