C# WPF密码框提示不起作用

我正在尝试在WPF中设置密码框的样式，以便它能够显示提示。 我使用ResourceDictionary中的以下代码来完成此操作：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:BudgetBuddy.Styles">
    
    <Style x:Key="PBHintStyle" TargetType="{x:Type PasswordBox}">
        <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
        <Setter Property="BorderBrush" Value="#FFABADB3"/>
        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
        <Setter Property="HorizontalContentAlignment" Value="Left"/>
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
        <Setter Property="AllowDrop" Value="True"/>
        <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
        <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type PasswordBox}">
                    <Border 
                            x:Name="border" 
                            BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" 
                            SnapsToDevicePixels="True"
                            CornerRadius="4"
                            Padding="5 2 0 0">
                        <Grid>
                            <ScrollViewer x:Name="PART_ContentHost" Focusable="False" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
                            <TextBlock x:Name="WARKTEXT" Text="{TemplateBinding Tag}" Foreground="DimGray" Visibility="Collapsed" />
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Opacity" TargetName="border" Value="0.56"/>
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="BorderBrush" TargetName="border" Value="#FF7EB4EA"/>
                        </Trigger>
                        <Trigger Property="IsKeyboardFocused" Value="True">
                            <Setter Property="BorderBrush" TargetName="border" Value="#FF569DE5"/>
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsFocused" Value="False"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Visibility" TargetName="WARKTEXT" Value="Visible"/>
                        </MultiTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <MultiTrigger>
                <MultiTrigger.Conditions>
                    <Condition Property="IsInactiveSelectionHighlightEnabled" Value="True"/>
                    <Condition Property="IsSelectionActive" Value="False"/>
                </MultiTrigger.Conditions>
                <Setter Property="SelectionBrush" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
            </MultiTrigger>
        </Style.Triggers>
    </Style>

</ResourceDictionary>

这段代码可以工作，但有一个问题。它显示提示，将字符显示为密码字符，但问题是在字段中键入密码后，它在密码字符上显示提示

以下是一些屏幕截图：

问题是：

我该如何解决这个问题？提前谢谢

您可以尝试以下方法：

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

如果文本不为空或null，将显示提示，否则为否

---

希望这能对您有所帮助。

Property=Text在PasswordBox中无法识别。我的错误是，您可以尝试此解决方案来创建multitrigger：为什么使用Visual Studio标记？