如何使密码框无需屏蔽即可获取普通文本 [英] How to make password Box to take normal text without masking

问题描述

我可以让密码盒在不掩盖的情况下使用普通文本，如果是，则如何在wpf中执行此操作。我有一个密码框，应该显示密码输入密码前的文字。输入密码时，它将显示为蒙版文本。请帮忙。



提前致谢

Can I make password Box to take normal text without masking it, if yes how to do it in wpf. I have a password box which should display "Password" Text prior to entering password. And on entering password the it will be displayed as a masked text. Please help.

Thanks in advance

推荐答案

编写自己规范的自定义PasswordBox。在WPF中编写自定义控件非常简单。



示例：



创建WPF自定义控件，第1部分 [ ^ ]



创建WPF自定义控件，第2部分 [ ^ ]



注意：这些是如何在WPF中编写自定义控件的示例。



或尝试下面的样式，将HintTextBoxStyle设置为PasswordBox并在Tag中显示您的消息。

Write a custom PasswordBox of your own specification. Writing custom control in WPF is very easy and simple.

Examples:

Create a WPF Custom Control, Part 1[^]

Create a WPF Custom Control, Part 2[^]

Note: These are examples how to write a custom control in WPF.

or try the below style, Set the HintTextBoxStyle to the PasswordBox and give your message in Tag.

<Style x:Key="HintLabel" TargetType="{x:Type TextBlock}">
        <Setter Property="IsHitTestVisible" Value="False" />
        <Setter Property="FontStyle" Value="Italic" />
        <Setter Property="FontSize" Value="11" />
        <Setter Property="Margin" Value="2,2,0,0" />
        <Setter Property="Visibility" Value="Hidden" />
        <Setter Property="Foreground" Value="Gray" />
        <Setter Property="FontFamily" Value="Aial" />
    </Style>

    <SolidColorBrush x:Key="ListBorder" Color="#FF7F9DB9"/>

    <Style x:Key="HintTextBoxStyle"

                   TargetType="{x:Type TextBox}">
            <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
            <Setter Property="BorderBrush" Value="{StaticResource ListBorder}"/>
            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
            <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="HorizontalContentAlignment" Value="Left"/>
            <Setter Property="Padding" Value="2"/>
            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
            <Setter Property="AllowDrop" Value="true"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type TextBox}">
                    <Grid Width="Auto" Height="Auto">
                        <Border x:Name="Bd" SnapsToDevicePixels="true" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="3,3,3,3" BorderBrush="#FF757575" Margin="0,0,0,0"

                                Background="{TemplateBinding Background}">                            
                            <Grid>
                                <ScrollViewer x:Name="PART_ContentHost" Margin="0,0,0,0"

                                                  SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
                                <TextBlock x:Name="PART_SearchHintLabel"

                                           Style="{StaticResource HintLabel}"

                                           Text="{TemplateBinding Tag}"

                                           Visibility="Collapsed" />
                            </Grid>
                        </Border>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsFocused" Value="True">
                            <Setter Property="BorderBrush" TargetName="Bd" Value="#FF7AA639"/>
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="BorderBrush" TargetName="Bd" Value="#FF7AA639"/>
                        </Trigger>
                        <Trigger Property="UIElement.IsEnabled">
                            <Setter Property="Panel.Background" TargetName="Bd">
                                <Setter.Value>
                                    <DynamicResource ResourceKey="{x:Static SystemColors.ControlBrushKey}" />
                                </Setter.Value>
                            </Setter>
                            <Setter Property="TextElement.Foreground">
                                <Setter.Value>
                                    <DynamicResource ResourceKey="{x:Static SystemColors.GrayTextBrushKey}" />
                                </Setter.Value>
                            </Setter>
                            <Trigger.Value>
                                <s:Boolean>False</s:Boolean>
                            </Trigger.Value>
                        </Trigger>                        
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsFocused" Value="False" />
                                <Condition Property="Text" Value="" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="PART_SearchHintLabel"

                                            Property="Visibility"

                                            Value="Visible" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsFocused" Value="False" />
                                <Condition Property="Text" Value="{x:Null}" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="PART_SearchHintLabel"

                                            Property="Visibility"

                                            Value="Visible" />
                        </MultiTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

Mark it as Answer, if it is helpful

Hi,



look here at the WPF Watermark PasswordBox:

http://stackoverflow.com/questions/1607066/wpf-watermark-passwordbox-from-watermark-textbox[^]



Hope this is what you are looking for

Hi,

look here at the WPF Watermark PasswordBox:
http://stackoverflow.com/questions/1607066/wpf-watermark-passwordbox-from-watermark-textbox[^]

Hope this is what you are looking for

1. Create UserControl with 2 controls: Textbox and passwordcontrol. One is visible, the other is hidden.

2. Create checkbox to alternate their visibility.



UserControl’s xaml:

1. Create UserControl with 2 controls: Textbox and passwordcontrol. One is visible, the other is hidden.
2. Create checkbox to alternate their visibility.

UserControl's xaml:

<usercontrol x:class="ITWPFControls.WpfPasswordControl" xmlns:x="#unknown">
                         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"
                         mc:Ignorable="d"
                         d:DesignHeight="35" d:DesignWidth="450"&gt;
    <grid horizontalalignment="Stretch" margin="3" name="stackPanel1" verticalalignment="Stretch" width="Auto" height="Auto">
        <grid.columndefinitions>
            <columndefinition width="100*" />
            <columndefinition width="Auto" />
        </grid.columndefinitions>
        <textbox height="Auto" name="TB1" verticalcontentalignment="Center" margin="2" padding="2" grid.column="0" />
        <passwordbox height="Auto" name="PWB1" verticalcontentalignment="Center" margin="2" padding="2" grid.column="0" visibility="Hidden" />
        <checkbox content="Masked" margin="3" name="CB1" height="Auto" width="Auto" horizontalalignment="Center" horizontalcontentalignment="Center" grid.columnspan="1" verticalcontentalignment="Top" grid.column="1" padding="3,0,3,3" verticalalignment="Center" click="CB1_Click" />
    </grid>
</usercontrol>

3. create UserControl’s property \"Password\". Password gets its value from actually visible control

3. create UserControl's property "Password". Password gets its value from actually visible control

public string Password
{
    get
    {
        if (TB1.Visibility == System.Windows.Visibility.Visible) {
            return TB1.Text;
        } else if (PWB1.Visibility == System.Windows.Visibility.Visible) {
            return PWB1.Password;
        }
        return "";
    }
}

4. implement in UserControl’s cs alternating the visiblility:



4.1. the new visible takes its value from old visible

4.2. the new visible gets its carret and focus

4. implement in UserControl's cs alternating the visiblility:

4.1. the new visible takes its value from old visible
4.2. the new visible gets its carret and focus

private void CB1_Click(object sender, RoutedEventArgs e)
{
    string _Password = Password;
    TB1.Visibility = CB1.IsChecked == true ? System.Windows.Visibility.Hidden : System.Windows.Visibility.Visible;
    PWB1.Visibility = CB1.IsChecked == true ? System.Windows.Visibility.Visible : System.Windows.Visibility.Hidden;
    int _Selection = _Password.Length;
    if (_Selection > 0) {
        if (TB1.Visibility == System.Windows.Visibility.Visible) {
            TB1.Text = _Password;
            TB1.SelectionStart = _Selection;
            TB1.Focus();
        } else if (PWB1.Visibility == System.Windows.Visibility.Visible) {
            PWB1.Password = _Password;
            MethodInfo _MI = PWB1.GetType().GetMethod("Select", BindingFlags.Instance | BindingFlags.NonPublic);
            if (_MI != null) {
                _MI.Invoke(PWB1, new object[] { _Selection, 0 });
            }
            PWB1.Focus();
        }
    }
}

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