文本框只能點擊「第一行」

Question

我有一個文本框，哪個比「普通」文本框更高。如果我點擊文本框的「第一行」，我只能輸入文本。我如何能夠點擊文本框的任何部分並能夠顯示光標，因爲如果您有5行文本框並且必須單擊第一行才能輸入文本，則此操作非常麻煩

<StackPanel Orientation="Vertical" Margin="0,0,15,0"> 
     <TextBlock x:Name="lblObjective" Text="Objective" Style="{StaticResource TextBlockStyle}" VerticalAlignment="Center"></TextBlock> 
     <TextBox x:Name="Objective" Text="{Binding ObjectiveText, Mode=TwoWay}" TextWrapping="Wrap" Height="120" Width="500"></TextBox> 
</StackPanel> 

編輯：

這是影響我的應用程序中的所有文本框的模板。誰能說什麼我需要添加到能夠在文本框的任意位置單擊，仍然可以得到插入符號，而不必在第一行

<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> 
            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="FocusRectangle" /> 
           </Storyboard> 
          </VisualState> 
          <VisualState x:Name="Disabled"> 
           <Storyboard> 
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="DisabledVisualElement"> 
             <SplineDoubleKeyFrame KeyTime="0" Value="1"/> 
            </DoubleAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
          <VisualState x:Name="ReadOnly"> 
           <Storyboard> 
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ReadOnlyVisualElement"> 
             <SplineDoubleKeyFrame KeyTime="0" Value="1"/> 
            </DoubleAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
         </VisualStateGroup> 
         <VisualStateGroup x:Name="FocusStates"> 
          <VisualState x:Name="Focused"> 
           <Storyboard> 
            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="FocusRectangle" /> 
            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="FocusInnerRectangle"/> 
           </Storyboard> 
          </VisualState> 
          <VisualState x:Name="Unfocused"> 
           <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> 
               <sys:Boolean>True</sys:Boolean> 
              </DiscreteObjectKeyFrame.Value> 
             </DiscreteObjectKeyFrame> 
            </ObjectAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
         </VisualStateGroup> 
        </VisualStateManager.VisualStateGroups> 
        <Rectangle x:Name="Base" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="{TemplateBinding BorderThickness}" Opacity="1" Fill="{StaticResource ControlBackgroundBrush}" /> 
        <Rectangle x:Name="FocusRectangle" StrokeThickness="{TemplateBinding BorderThickness}" Opacity="0" Stroke="{StaticResource TextBoxMouseOverBorderBrush}" /> 
        <Rectangle x:Name="FocusInnerRectangle" StrokeThickness="{TemplateBinding BorderThickness}" Opacity="0" Margin="1" Stroke="{StaticResource TextBoxMouseOverInnerBorderBrush}" /> 
        <Grid Margin="0,1,0,0"> 
         <Border x:Name="ReadOnlyVisualElement" Background="{StaticResource ReadOnlyBrush}" Opacity="0"/> 
         <Grid > 
          <ScrollViewer x:Name="ContentElement" BorderThickness="0" IsTabStop="False" Margin="4,0,2,2" VerticalAlignment="Top" Background="{x:Null}"/> 
         </Grid> 
        </Grid> 
        <Rectangle x:Name="DisabledVisualElement" Stroke="{StaticResource ControlsDisabledBrush}" StrokeThickness="{TemplateBinding BorderThickness}" Fill="{StaticResource ControlsDisabledBrush}" IsHitTestVisible="False" Opacity="0"/> 
        <Border x:Name="ValidationErrorElement" BorderBrush="{StaticResource ControlsValidationBrush}" BorderThickness="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> 
                  <sys:Boolean>true</sys: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="{StaticResource ValidationBrush5}" Margin="1,3,0,0"/> 
          <Path Data="M 0,0 L2,0 L 8,6 L8,8" Fill="{StaticResource WhiteColorBrush}" Margin="1,3,0,0"/> 
         </Grid> 
        </Border> 
       </Grid> 
      </ControlTemplate> 
     </Setter.Value> 
    </Setter> 

單擊如果我刪除整個模板，一切工作正常（即地方我點擊文本框我得到一個carret），但其餘的也失去了。所以我錯過了一些想法？

編輯2：

<ScrollViewer x:Name="ContentElement" BorderThickness="0" IsTabStop="False" Margin="4,0,2,2" VerticalAlignment="Top" Background="{x:Null}"/> 

是問題的根源......而不必VerticalAlignment="Stretch"它被設置到上，所以也就只有一條線是可以點擊的......

Answer 1

我不是確定你看到了什麼，但我發現在這樣的文本框中，點擊文本框中的任何地方都會給它輸入焦點，所以我可以開始編輯（不管你是否應該打開AcceptsReturn的狀態）。

但是，如果您在該框中單擊的位置超出了當前字符串值的末尾，那麼插入符會放在內容的末尾而不是您單擊的位置。這是常見的文本框行爲，我在輸入這個文本框中的計算器時，它具有相同的行爲。

如果您希望能夠在TexBox的任何位置開始輸入，那麼您需要檢測mousedown的文本位置並注入適量的空白。不是一件小事。