当我单击 CheckBox 时，Wpf PasswordBox 必须显示字符

Question

xml<Window x:Class="MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="MainWindow" Height="350" Width="525"><StackPanel VerticalAlignment="Center" Width="300">    <PasswordBox x:Name="PasswordBox1" Height="30" PasswordChar="*" Password="12345"/>    <CheckBox x:Name="CheckBox1" Content="Show Password"/></StackPanel></Window>网络Class MainWindow Private Sub CheckBox1_Checked(sender As Object, e As RoutedEventArgs) Handles CheckBox1.Checked    PasswordBox1.PasswordChar = CChar("")End SubPrivate Sub CheckBox1_Unchecked(sender As Object, e As RoutedEventArgs) Handles CheckBox1.Unchecked    PasswordBox1.PasswordChar = CChar("*")End SubEnd Class运行上面的代码并单击 CheckBox1 以了解发生了什么。当我单击 CheckBox 时，PasswordBox 如何显示12345 个字符？因此，需要修复以下线路。PasswordBox1.PasswordChar = CChar(" ")

Answer 1

这将适用于您正在寻找的内容，尽管它会在内存中公开您的密码。我们在 UI 的同一位置有一个文本框和一个密码框，当用户选中 Show Password 复选框时，我们折叠密码框并显示隐藏的文本框，同时更新文本。发送密码时，您需要检查是否使用了可见 ui 控件中的密码。

Xml代码：

<StackPanel Orientation="Horizontal">

  <Grid Width="300" Height="40">

    <PasswordBox Name="passwordBox" PasswordChar="*" />

    <TextBox Name="passwordTxtBox" Visibility="Collapsed" />

  </Grid>

<CheckBox Margin="10" Name="showPassword" Unchecked="ShowPassword_Unchecked"  Checked="ShowPassword_Checked" />

</StackPanel>

后面的代码：

    private void ShowPassword_Checked(object sender, RoutedEventArgs e)

    {

        passwordTxtBox.Text = passwordBox.Password;

        passwordBox.Visibility = Visibility.Collapsed;

        passwordTxtBox.Visibility = Visibility.Visible;

    }

    private void ShowPassword_Unchecked(object sender, RoutedEventArgs e)

    {

        passwordBox.Password = passwordTxtBox.Text;

        passwordTxtBox.Visibility = Visibility.Collapsed;

        passwordBox.Visibility = Visibility.Visible;

    }