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WPF文本框被截断

本文介绍了WPF文本框被截断的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

由于一些奇怪的原因，它是嵌入在滚动查看器我的WPF文本框的形象后，我加入了大量的文字给它得到下面突然中断等。有一些限制或东西是达到了，我可以做更大的东西？





我没有收到任何错误消息。



下面是相关的XAML：

 <电网X：名称=的ContentPanelGrid.Row =1保证金= 12,0,12,0> 
<按钮X：NAME =Slice_ButtonCONTENT =切片的Horizo​​ntalAlignment =左保证金=106,0,0,0VerticalAlignment =评出的点击=Slice_Button_ClickHEIGHT =87背景=＃FF0D5B1E/> 
<按钮X：NAME =CancelButtonCONTENT =取消的Horizo​​ntalAlignment =左保证金=232,0,0,0VerticalAlignment =评出的HEIGHT =87点击=Button_Click_1背景=＃FFC70E0E/> 
<的ScrollViewer X：NAME =滚轮的Horizo​​ntalAlignment =左HEIGHT =505保证金=10,92,0,0VerticalAlignment =评出的WIDTH =436> 
<文本框X：NAME =发件箱TextWrapping =自动换行文本=输出这里会显示IsReadOnly =真保证金=2/> 
< /&的ScrollViewer GT; 
 
< /网格和GT;

下面是C＃我用它来添加文本：

  main.DispatchInvoke（（）=> 
 {
 main.OutBox.Text + = newText; 
 main.Scroller.ScrollToVerticalOffset （main.Scroller.ScrollableHeight）; 
 main.Scroller.UpdateLayout（）; 
}）;


解决方案

第二次更新：



好了，所以我决定让Windows Phone的工具包和尝试了这一点。



文本框刚才提到的OP不会滚动。因此，我决定看看它的默认控件模板



这是剥夺了控件模板从vs2012随着Windows Phone 8 SDK的文本框：

 <的ControlTemplate的TargetType =文本框> 
<网格背景=透明> 
<！ - 的VisualState组为ABT 100线 - > 
< BORDER X：NAME =MainBorder
保证金={StaticResource的PhoneTouchTargetOverhang}
背景={TemplateBinding背景}
 BorderBrush ={TemplateBinding BorderBrush} 
了borderThickness ={TemplateBinding了borderThickness}/> 
< BORDER X：NAME =ReadonlyBorder
保证金={StaticResource的PhoneTouchTargetOverhang}
背景=透明
 BorderBrush ={StaticResource的PhoneDisabledBrush}
了borderThickness ={TemplateBinding了borderThickness}
能见度=坍塌/> 
< BORDER保证金={StaticResource的PhoneTouchTargetOverhang}
 =背景透明
 BorderBrush =透明
了borderThickness ={TemplateBinding了borderThickness}> 
< ContentControl中X：NAME =ContentElement的
保证金={StaticResource的PhoneTextBoxInnerMargin}
 Horizo​​ntalContentAlignment =拉伸
 VerticalContentAlignment =拉伸
了borderThickness = 0
填充={TemplateBinding填充}/> 
< /边框> 
< /网格和GT; 
< /控件模板>

没有的ScrollViewer 只是一个 ContentControl中。下面是vs2012一个桌面应用程序文本框 

 <控件模板的TargetType ={X：TextBox类型}> 
< BORDER X：名称=边境
背景={TemplateBinding背景}
 BorderBrush ={TemplateBinding BorderBrush}
了borderThickness ={TemplateBinding了borderThickness} 
 SnapsToDevicePixels =真> 
<的ScrollViewer X：NAME =PART_ContentHost
调焦=FALSE
 Horizo​​ntalScrollBarVisibility =隐藏
 VerticalScrollBarVisibility =隐藏/> 
< /边框>

同时通过复制手机模板，我的桌面应用程序，同样的行为和snoop，验证了这一点。



不知道生根粉推理为什么它不具有的ScrollViewer ，但加入一个在控件模板不爽的问题。



解决方法：



全部风格为文本框与的ScrollViewer （新增App.xaml中内 - > < Application.Resources>< /Application.Resources> 

 <风格X：键=TextBoxStyle1
的TargetType =文本框> 
< setter属性=的FontFamily
值={StaticResource的PhoneFontFamilyNormal}/> 
< setter属性=字号
值={StaticResource的PhoneFontSizeMediumLarge}/> 
< setter属性=背景
值={StaticResource的PhoneTextBoxBrush}/> 
< setter属性=前景
值={StaticResource的PhoneTextBoxForegroundBrush}/> 
< setter属性=BorderBrush
值={StaticResource的PhoneTextBoxBrush}/> 
< setter属性=selectionBackground已
值={StaticResource的PhoneAccentBrush}/> 
< setter属性=SelectionForeground
值={StaticResource的PhoneTextBoxSelectionForegroundBrush}/> 
< setter属性=了borderThickness，
值={StaticResource的PhoneBorderThickness}/> 
< setter属性=填充
值=2/> 
< setter属性=模板> 
< Setter.Value> 
<的ControlTemplate的TargetType =文本框> 
<网格背景=透明> 
< VisualStateManager.VisualStateGroups> 
< VisualStateGroup X：NAME =CommonStates> 
<的VisualState X：名称=正常/> 
<的VisualState X：NAME =鼠标悬停/> 
<的VisualState X：名称=已禁用> 
<情节提要> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =MainBorder
 Storyboard.TargetProperty =背景> 
< DiscreteObjectKeyFrame KeyTime =0
值=透明/> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =MainBorder
 Storyboard.TargetProperty =BorderBrush> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneDisabledBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =ContentElement的
 Storyboard.TargetProperty =前景> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneDisabledBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< /故事板> 
< /&的VisualState GT; 
<的VisualState X：NAME =只读> 
<情节提要> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =MainBorder
 Storyboard.TargetProperty =能见度> 
将; DiscreteObjectKeyFrame KeyTime =0> 
< DiscreteObjectKeyFrame.Value> 
<能见度和GT;倒塌< /能见度和GT; 
< /DiscreteObjectKeyFrame.Value> 
< / DiscreteObjectKeyFrame> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =ReadonlyBorder
 Storyboard.TargetProperty =能见度> 
将; DiscreteObjectKeyFrame KeyTime =0> 
< DiscreteObjectKeyFrame.Value> 
<能见度和GT;可见的LT; /能见度和GT; 
< /DiscreteObjectKeyFrame.Value> 
< / DiscreteObjectKeyFrame> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =ReadonlyBorder
 Storyboard.TargetProperty =背景> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneTextBoxBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =ReadonlyBorder
 Storyboard.TargetProperty =BorderBrush> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneTextBoxBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =ContentElement的
 Storyboard.TargetProperty =前景> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneTextBoxReadOnlyBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< /故事板> 
< /&的VisualState GT; 
< / VisualStateGroup> 
< VisualStateGroup X：NAME =FocusStates> 
<的VisualState X：NAME =聚焦> 
<情节提要> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =MainBorder
 Storyboard.TargetProperty =背景> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneTextBoxEditBackgroundBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< ObjectAnimationUsingKeyFrames Storyboard.TargetName =MainBorder
 Storyboard.TargetProperty =BorderBrush> 
< DiscreteObjectKeyFrame KeyTime =0
值={StaticResource的PhoneTextBoxEditBorderBrush}/> 
< / ObjectAnimationUsingKeyFrames> 
< /故事板> 
< /&的VisualState GT; 
<的VisualState X：NAME =未聚焦/> 
< / VisualStateGroup> 
< /VisualStateManager.VisualStateGroups> 
< BORDER X：NAME =MainBorder
保证金={StaticResource的PhoneTouchTargetOverhang}
背景={TemplateBinding背景}
 BorderBrush ={TemplateBinding BorderBrush} 
了borderThickness ={TemplateBinding了borderThickness}/> 
< BORDER X：NAME =ReadonlyBorder
保证金={StaticResource的PhoneTouchTargetOverhang}
背景=透明
 BorderBrush ={StaticResource的PhoneDisabledBrush}
了borderThickness ={TemplateBinding了borderThickness}
能见度=坍塌/> 
< BORDER保证金={StaticResource的PhoneTouchTargetOverhang}
 =背景透明
 BorderBrush =透明
了borderThickness ={TemplateBinding了borderThickness}> 
<&的ScrollViewer GT; 
< ContentControl中X：NAME =ContentElement的
保证金={StaticResource的PhoneTextBoxInnerMargin}
 Horizo​​ntalContentAlignment =拉伸
 VerticalContentAlignment =拉伸
了borderThickness = 0
填充={TemplateBinding填充}/> 
< /&的ScrollViewer GT; 
< /边框> 
< /网格和GT; 
< /控件模板> 
< /Setter.Value> 
< /二传手> 
< /样式和GT;



用法：

 <电网X：名称=的ContentPanel
 Grid.Row =1
保证金=12,0,12,0> 
< Grid.RowDefinitions> 
< RowDefinition高度=自动/> 
< RowDefinition高度=*/> 
< /Grid.RowDefinitions> 
< StackPanel的Grid.Row =0
的Horizo​​ntalAlignment =中心
方向=横向> 
<按钮X：NAME =Slice_Button
保证金=10 0
背景=＃FF0D5B1E
含量=切片/> 
<按钮X：NAME =CancelButton
保证金=10 0
背景=＃FFC70E0E
含量=取消/> 
< / StackPanel的> 
<文本框X：NAME =发件箱
 Grid.Row =1
保证金=10
 IsReadOnly =真
风格= {StaticResource的TextBoxStyle1}
文本=输出将在此处显示为
 TextWrapping =自动换行/> 
< /网格和GT;



请注意只是包裹文本框在的ScrollViewer 滚动不仅仅是其中的内容可能不能从一个UX POV非常有吸引力的整个控制



下载链接到示例项目通过以上修正：


For some strange reason my WPF textbox which is embedded in a scroll viewer get abruptly cut off like in the image below after I have added a lot of text to it. Is there some limit or something that is reached that I can make larger or something?

I do not receive any error messages.

Here is the relevant Xaml:

<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <Button x:Name="Slice_Button" Content="Slice" HorizontalAlignment="Left" Margin="106,0,0,0" VerticalAlignment="Top" Click="Slice_Button_Click" Height="87" Background="#FF0D5B1E"/>
        <Button x:Name="CancelButton" Content="Cancel" HorizontalAlignment="Left" Margin="232,0,0,0" VerticalAlignment="Top" Height="87" Click="Button_Click_1" Background="#FFC70E0E"/>
        <ScrollViewer x:Name="Scroller" HorizontalAlignment="Left" Height="505" Margin="10,92,0,0" VerticalAlignment="Top" Width="436">
            <TextBox x:Name="OutBox" TextWrapping="Wrap" Text="Output will be displayed here" IsReadOnly="True" Margin="2"/>
        </ScrollViewer>

    </Grid>

Here is the C# I use to add the text:

main.DispatchInvoke(() =>
            {
                main.OutBox.Text += newText;
                main.Scroller.ScrollToVerticalOffset(main.Scroller.ScrollableHeight);
                main.Scroller.UpdateLayout();
            });
解决方案

Second Update:

Ok so I decided to get the windows phone kit and try this out.

TextBox as the OP mentioned just wouldn't scroll. Hence I decided to look at it's default ControlTemplate

This is the stripped out ControlTemplate from vs2012 with windows phone 8 sdk for TextBox:

<ControlTemplate TargetType="TextBox">
  <Grid Background="Transparent">
    <!--  VisualState Groups for abt 100 lines  -->
    <Border x:Name="MainBorder"
            Margin="{StaticResource PhoneTouchTargetOverhang}"
            Background="{TemplateBinding Background}"
            BorderBrush="{TemplateBinding BorderBrush}"
            BorderThickness="{TemplateBinding BorderThickness}" />
    <Border x:Name="ReadonlyBorder"
            Margin="{StaticResource PhoneTouchTargetOverhang}"
            Background="Transparent"
            BorderBrush="{StaticResource PhoneDisabledBrush}"
            BorderThickness="{TemplateBinding BorderThickness}"
            Visibility="Collapsed" />
    <Border Margin="{StaticResource PhoneTouchTargetOverhang}"
            Background="Transparent"
            BorderBrush="Transparent"
            BorderThickness="{TemplateBinding BorderThickness}">
      <ContentControl x:Name="ContentElement"
                      Margin="{StaticResource PhoneTextBoxInnerMargin}"
                      HorizontalContentAlignment="Stretch"
                      VerticalContentAlignment="Stretch"
                      BorderThickness="0"
                      Padding="{TemplateBinding Padding}" />
    </Border>
  </Grid>
</ControlTemplate>

No ScrollViewer just a ContentControl. The following is from vs2012 for a desktop app TextBox

<ControlTemplate TargetType="{x:Type TextBox}">
  <Border x:Name="border"
          Background="{TemplateBinding Background}"
          BorderBrush="{TemplateBinding BorderBrush}"
          BorderThickness="{TemplateBinding BorderThickness}"
          SnapsToDevicePixels="True">
    <ScrollViewer x:Name="PART_ContentHost"
                  Focusable="False"
                  HorizontalScrollBarVisibility="Hidden"
                  VerticalScrollBarVisibility="Hidden" />
  </Border>

Also verified this with Snoop by copying the phone template to my desktop app and same behavior.

Not sure abt the reasoning for why it doesn't have a ScrollViewer, but adding one in the ControlTemplate sorts the issue out.

Solution:

Full Style for TextBox with ScrollViewer (Added within "App.xaml" -> <Application.Resources></Application.Resources>

<Style x:Key="TextBoxStyle1"
       TargetType="TextBox">
  <Setter Property="FontFamily"
          Value="{StaticResource PhoneFontFamilyNormal}" />
  <Setter Property="FontSize"
          Value="{StaticResource PhoneFontSizeMediumLarge}" />
  <Setter Property="Background"
          Value="{StaticResource PhoneTextBoxBrush}" />
  <Setter Property="Foreground"
          Value="{StaticResource PhoneTextBoxForegroundBrush}" />
  <Setter Property="BorderBrush"
          Value="{StaticResource PhoneTextBoxBrush}" />
  <Setter Property="SelectionBackground"
          Value="{StaticResource PhoneAccentBrush}" />
  <Setter Property="SelectionForeground"
          Value="{StaticResource PhoneTextBoxSelectionForegroundBrush}" />
  <Setter Property="BorderThickness"
          Value="{StaticResource PhoneBorderThickness}" />
  <Setter Property="Padding"
          Value="2" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="TextBox">
        <Grid Background="Transparent">
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualState x:Name="Normal" />
              <VisualState x:Name="MouseOver" />
              <VisualState x:Name="Disabled">
                <Storyboard>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MainBorder"
                                                 Storyboard.TargetProperty="Background">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="Transparent" />
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MainBorder"
                                                 Storyboard.TargetProperty="BorderBrush">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneDisabledBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement"
                                                 Storyboard.TargetProperty="Foreground">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneDisabledBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="ReadOnly">
                <Storyboard>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MainBorder"
                                                 Storyboard.TargetProperty="Visibility">
                    <DiscreteObjectKeyFrame KeyTime="0">
                      <DiscreteObjectKeyFrame.Value>
                        <Visibility>Collapsed</Visibility>
                      </DiscreteObjectKeyFrame.Value>
                    </DiscreteObjectKeyFrame>
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ReadonlyBorder"
                                                 Storyboard.TargetProperty="Visibility">
                    <DiscreteObjectKeyFrame KeyTime="0">
                      <DiscreteObjectKeyFrame.Value>
                        <Visibility>Visible</Visibility>
                      </DiscreteObjectKeyFrame.Value>
                    </DiscreteObjectKeyFrame>
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ReadonlyBorder"
                                                 Storyboard.TargetProperty="Background">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneTextBoxBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ReadonlyBorder"
                                                 Storyboard.TargetProperty="BorderBrush">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneTextBoxBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement"
                                                 Storyboard.TargetProperty="Foreground">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneTextBoxReadOnlyBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="FocusStates">
              <VisualState x:Name="Focused">
                <Storyboard>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MainBorder"
                                                 Storyboard.TargetProperty="Background">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneTextBoxEditBackgroundBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MainBorder"
                                                 Storyboard.TargetProperty="BorderBrush">
                    <DiscreteObjectKeyFrame KeyTime="0"
                                            Value="{StaticResource PhoneTextBoxEditBorderBrush}" />
                  </ObjectAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Unfocused" />
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
          <Border x:Name="MainBorder"
                  Margin="{StaticResource PhoneTouchTargetOverhang}"
                  Background="{TemplateBinding Background}"
                  BorderBrush="{TemplateBinding BorderBrush}"
                  BorderThickness="{TemplateBinding BorderThickness}" />
          <Border x:Name="ReadonlyBorder"
                  Margin="{StaticResource PhoneTouchTargetOverhang}"
                  Background="Transparent"
                  BorderBrush="{StaticResource PhoneDisabledBrush}"
                  BorderThickness="{TemplateBinding BorderThickness}"
                  Visibility="Collapsed" />
          <Border Margin="{StaticResource PhoneTouchTargetOverhang}"
                  Background="Transparent"
                  BorderBrush="Transparent"
                  BorderThickness="{TemplateBinding BorderThickness}">
            <ScrollViewer>
              <ContentControl x:Name="ContentElement"
                              Margin="{StaticResource PhoneTextBoxInnerMargin}"
                              HorizontalContentAlignment="Stretch"
                              VerticalContentAlignment="Stretch"
                              BorderThickness="0"
                              Padding="{TemplateBinding Padding}" />
            </ScrollViewer>
          </Border>
        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

usage:

<Grid x:Name="ContentPanel"
      Grid.Row="1"
      Margin="12,0,12,0">
  <Grid.RowDefinitions>
    <RowDefinition Height="Auto" />
    <RowDefinition Height="*" />
  </Grid.RowDefinitions>
  <StackPanel Grid.Row="0"
              HorizontalAlignment="Center"
              Orientation="Horizontal">
    <Button x:Name="Slice_Button"
            Margin="10 0"
            Background="#FF0D5B1E"
            Content="Slice" />
    <Button x:Name="CancelButton"
            Margin="10 0"
            Background="#FFC70E0E"
            Content="Cancel" />
  </StackPanel>
  <TextBox x:Name="OutBox"
           Grid.Row="1"
           Margin="10"
           IsReadOnly="True"
           Style="{StaticResource TextBoxStyle1}"
           Text="Output will be displayed here"
           TextWrapping="Wrap" />
</Grid>

Do note just wrapping the TextBox in a ScrollViewer scroll's the entire control than just the content within it which might not be very appealing from a UX POV

Download Link to Sample Project With above fix: DropBox

这篇关于WPF文本框被截断的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

08-19 19:20
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