我使用控件模板重新设置了一个文本框样式。样式效果很好,但是现在我无法在文本框中更改文本框后以编程方式获取文本值。
以下是我如何使用该风格:
<TextBox
x:Name="KernTextBox"
Style="{StaticResource MediumTextBoxStyle}"
TextWrapping="Wrap"
MinLines="1"
MaxLines="5"
VerticalScrollBarVisibility="Auto"
TextChanged="TextChanged"
/>
这是不起作用的。
get { return KernTextBox.Text; }
这是风格:
<Style x:Key="MediumTextBoxStyle" TargetType="TextBox">
<Setter Property="FontSize" Value="18" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TextBox">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver" />
<VisualState x:Name="ReadOnly">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonRectangle"
Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource BackgroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonRectangle"
Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource BackgroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ButtonText"
Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame
KeyTime="0"
Value="{StaticResource ForegroundBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CheckStates">
<VisualState x:Name="Checked" />
<VisualState x:Name="Unchecked"/>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused" />
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle
x:Name="ButtonRectangle"
Stroke="Transparent"
UseLayoutRounding="False"
Fill="{StaticResource BackgroundBrush}">
</Rectangle>
<TextBox
x:Name="ButtonText"
Text="{Binding Path=Text, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
FontSize="{TemplateBinding FontSize}"
HorizontalAlignment="Stretch"
VerticalAlignment="Center"
Margin="2 0"
TextWrapping="{TemplateBinding TextWrapping}"
MinLines="{TemplateBinding MinLines}"
MaxLines="{TemplateBinding MaxLines}"
VerticalScrollBarVisibility="{TemplateBinding VerticalScrollBarVisibility}"
Padding="{TemplateBinding Padding}"
Foreground="{StaticResource ForegroundBrush}"
Background="{StaticResource BackgroundBrush}"
>
</TextBox>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
修改
最终的工作方式:
<Style
x:Key="TextBoxStyle"
TargetType="{x:Type TextBox}">
<Setter
Property="Foreground"
Value="{StaticResource ForegroundBrush}" />
<Setter
Property="FontSize"
Value="18" />
<Setter
Property="CaretBrush"
Value="{StaticResource ForegroundBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Border
Name="Border"
Background="{StaticResource BackgroundBrush}"
BorderBrush="{StaticResource ForegroundBrush}"
BorderThickness="1" >
<ScrollViewer Margin="0" x:Name="PART_ContentHost"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="{StaticResource ForegroundBrush}"/>
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource BackgroundBrush}"/>
<Setter Property="Foreground" Value="{StaticResource BackgroundBrush}"/>
</Trigger>
<Trigger Property="IsReadOnly" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource ForegroundBrush}"/>
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource BackgroundBrush}"/>
<Setter Property="Foreground" Value="{StaticResource BackgroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
答案 0 :(得分:1)
是否有理由将文本框放在文本框中?检查文本框的原始样式和template并从那里进行修改。我的猜测是,文本框内部使用TextBoxView(隐藏在Scrollviewer中),Text属性不是通过TemplateBinding绑定,而是在这些内部类之间计算。也许这就是为什么你不能将你的文本属性绑定到控件模板中的文本框文本的原因。
答案 1 :(得分:1)
在你的sytle中,当你将内部Text属性绑定到Template Text属性时,添加更新源触发器PropertyChanged
,即使你没有失去焦点,你也会得到文本更新。
Text="{Binding Path=Text, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
设置文本框样式的方法不能正常工作的原因是默认情况下,在从控件中删除焦点之前,text属性不会更新它的绑定属性。我猜你正在尝试使用TextChanged事件中的Text属性,该事件当时没有从TextBox中删除焦点。
我建议你对Text绑定的添加将强制每次文本更改时更新属性,并在TextChanged事件被引发之前执行。