<PasswordBox Margin="0,10"
Style="{StaticResource MaterialDesignFloatingHintPasswordBox}"
DockPanel.Dock="Top"
pass:PassWordExtensions.PassWord="{Binding PassWord, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
VerticalAlignment="Center" Cursor="IBeam">
<i:Interaction.Behaviors>
<pass:PasswordBehavior></pass:PasswordBehavior>
</i:Interaction.Behaviors>
<md:HintAssist.Hint>
<StackPanel Orientation="Horizontal" Margin="-1 0 0 0">
<md:PackIcon Kind="LockCheck" />
<TextBlock Text=" Password" />
</StackPanel>
</md:HintAssist.Hint>
<PasswordBox.InputBindings>
<KeyBinding Command="{Binding EnterCommand}" Key="Enter"/>
</PasswordBox.InputBindings>
</PasswordBox>
//UpdateSourceTrigger=PropertyChanged在文本绑定中不加这个在代码中修改了值UI不变,一定要加上Mode=TwoWay, UpdateSourceTrigger=PropertyChanged
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