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我正在尝试为文本框设置控件模板并将数据绑定到它。问题是数据没有通过。我想因为我有一个文本框标签，<ControlTemplate>所以我需要以某种方式占位符。

  <Style x:Key="TextBoxStyle" TargetType="TextBox">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TextBox">
                <Grid x:Name="grid" Height="55" Background="White">
                    <Rectangle Stroke="#FFD9D9D9" StrokeThickness="6"/>
                    <ContentPresenter x:Name="contentPresenterText" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="Black"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
  </Style>

所以我通过添加<ContentPresenter>标签进行了实验，但这会引发错误。

这是文本框代码：

<TextBox x:Name="NameTextField" Grid.ColumnSpan="6" Grid.Column="1" TextWrapping="Wrap" Text="{Binding Name, Mode=TwoWay}" Margin="0" Style="{StaticResource TextBoxStyle}" />

谁能帮我理解如何做到这一点。可以应用于数据绑定仍然有效的所有文本字段的通用模板？

更新：这是崩溃时指向的代码：

#if DEBUG && !DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION
        UnhandledException += (sender, e) =>
        {
            if (global::System.Diagnostics.Debugger.IsAttached) global::System.Diagnostics.Debugger.Break(); //highlights this
        };
#endif
4

1 回答 1

1

首先，将 ContentPresenter 放在 TextBox 中并不是一个好主意。

如果您使用控制模板，您应该使用模板绑定来绑定真实的组件属性。下面的代码显示了如何使用它，但据我记得 TextBox 没有像“Content”这样的属性，因此您可以传输 TextBox 类的 Text、Padding 等的值，如图所示。

        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="TextBox">
                    <Grid x:Name="RootElement">
                        <!--TextBlock Text="{TemplateBinding Text}"/-->
                        <ContentPresenter Content="{TemplateBinding Padding}"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>

输出是 2,2,2,2 //ContentPresenter 默认显示在 TextBlock 中。

除此之外，您还可以覆盖默认内容，例如 TextBox 验证。如果您想扩展我建议覆盖默认样式的内容，您可以通过右键单击混合中的文本框并编辑模板-> 编辑复制它通过文本框状态为您生成当前模板，

默认模板是这个，

   <Style x:Key="TextBoxStyle1" TargetType="TextBox">
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Background" Value="#FFFFFFFF"/>
        <Setter Property="Foreground" Value="#FF000000"/>
        <Setter Property="Padding" Value="2"/>
        <Setter Property="BorderBrush">
            <Setter.Value>
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="#FFA3AEB9" Offset="0"/>
                    <GradientStop Color="#FF8399A9" Offset="0.375"/>
                    <GradientStop Color="#FF718597" Offset="0.375"/>
                    <GradientStop Color="#FF617584" Offset="1"/>
                </LinearGradientBrush>
            </Setter.Value>
        </Setter>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="TextBox">
                    <Grid x:Name="RootElement">
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimation Duration="0" To="#FF99C1E2" Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)" Storyboard.TargetName="MouseOverBorder"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="DisabledVisualElement"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="ReadOnly">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ReadOnlyVisualElement"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Focused">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualElement"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Unfocused">
                                    <Storyboard>
                                        <DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualElement"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="ValidationStates">
                                <VisualState x:Name="Valid"/>
                                <VisualState x:Name="InvalidUnfocused">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="ValidationErrorElement">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <Visibility>Visible</Visibility>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="InvalidFocused">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="ValidationErrorElement">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <Visibility>Visible</Visibility>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsOpen" Storyboard.TargetName="validationTooltip">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <System:Boolean>True</System:Boolean>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="1" Opacity="1">
                            <Grid>
                                <Border x:Name="ReadOnlyVisualElement" Background="#5EC9C9C9" Opacity="0"/>
                                <Border x:Name="MouseOverBorder" BorderBrush="Transparent" BorderThickness="1">
                                    <ScrollViewer x:Name="ContentElement" BorderThickness="0" IsTabStop="False" Padding="{TemplateBinding Padding}"/>
                                </Border>
                            </Grid>
                        </Border>
                        <Border x:Name="DisabledVisualElement" BorderBrush="#A5F7F7F7" BorderThickness="{TemplateBinding BorderThickness}" Background="#A5F7F7F7" IsHitTestVisible="False" Opacity="0"/>
                        <Border x:Name="FocusVisualElement" BorderBrush="#FF6DBDD1" BorderThickness="{TemplateBinding BorderThickness}" IsHitTestVisible="False" Margin="1" Opacity="0"/>
                        <Border x:Name="ValidationErrorElement" BorderBrush="#FFDB000C" BorderThickness="1" CornerRadius="1" Visibility="Collapsed">
                            <ToolTipService.ToolTip>
                                <ToolTip x:Name="validationTooltip" DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Template="{StaticResource ValidationToolTipTemplate}">
                                    <ToolTip.Triggers>
                                        <EventTrigger RoutedEvent="Canvas.Loaded">
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsHitTestVisible" Storyboard.TargetName="validationTooltip">
                                                        <DiscreteObjectKeyFrame KeyTime="0">
                                                            <DiscreteObjectKeyFrame.Value>
                                                                <System:Boolean>true</System:Boolean>
                                                            </DiscreteObjectKeyFrame.Value>
                                                        </DiscreteObjectKeyFrame>
                                                    </ObjectAnimationUsingKeyFrames>
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </EventTrigger>
                                    </ToolTip.Triggers>
                                </ToolTip>
                            </ToolTipService.ToolTip>
                            <Grid Background="Transparent" HorizontalAlignment="Right" Height="12" Margin="1,-4,-4,0" VerticalAlignment="Top" Width="12">
                                <Path Data="M 1,0 L6,0 A 2,2 90 0 1 8,2 L8,7 z" Fill="#FFDC000C" Margin="1,3,0,0"/>
                                <Path Data="M 0,0 L2,0 L 8,6 L8,8" Fill="#ffffff" Margin="1,3,0,0"/>
                            </Grid>
                        </Border>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

添加取决于您的评论：

     <ControlTemplate x:Key="TextBoxControlTemplate1" TargetType="TextBox">
        <Grid x:Name="grid"  Background="White">
                <Rectangle Stroke="#FFD9D9D9" StrokeThickness="26"/>
                <ContentPresenter x:Name="contentPresenterText" HorizontalAlignment="Center" VerticalAlignment="Center" >
                    <TextBox Text="{TemplateBinding Text}"/>
                </ContentPresenter>
        </Grid>
    </ControlTemplate>
于 2013-03-27T11:48:31.980 回答