工具提示未顯示在WPF標籤中？

在應用程序中，我試圖在標籤控件上設置工具提示。請找到詳細的XAML，建議在可能的情況下解決問題。到目前爲止，我已經嘗試了很多技巧（例如IsEnabled，IsHitTestVisible，控件模板，背景設置...），但未能顯示工具提示。工具提示未顯示在WPF標籤中？

<UserControl x:Class="HSDLAdminPortal.Forms.Application.ApplicationDetailForm" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Layout.Toolkit"    
     xmlns:local="clr-namespace:HSDLAdminPortal.Forms.Application" 
     mc:Ignorable="d" Width="1290" Height="595" 
     xmlns:gif="http://wpfanimatedgif.codeplex.com"    
     xmlns:name="UserControl" 
     > 
<UserControl.Resources> 
    <Style x:Key="LabelInfoStyle" TargetType="{x:Type Label}"> 
     <Setter Property="FontSize" Value="12"/> 
     <Setter Property="Foreground" Value="Black"/> 
    </Style> 
    <Style x:Key="LabelInfoValueStyle" TargetType="{x:Type Label}"> 
     <Setter Property="FontSize" Value="12"/> 
     <Setter Property="Foreground" Value="#999966"/> 
    </Style> 
    <Style x:Key="LabelInfoHeaderStyle" TargetType="{x:Type Label}"> 
     <Setter Property="FontSize" Value="14"/> 
     <Setter Property="Foreground" Value="White"/> 
    </Style> 
</UserControl.Resources> 
<Grid Margin="4" Background="Transparent"> 
    <Grid.Background> 
     <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
      <GradientStop Color="#e6eeff" Offset="1" /> 
      <GradientStop Color="#FFF5F2EF" Offset="0" /> 
     </LinearGradientBrush> 
    </Grid.Background> 
    <Grid.Resources> 
     <ResourceDictionary Source="/Resources/CustomAccordion.xaml"/> 
    </Grid.Resources> 
    <Grid.RowDefinitions> 
     <RowDefinition Height="*" /> 
     <RowDefinition Height="auto" /> 
    </Grid.RowDefinitions> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="auto" /> 
     <ColumnDefinition Width="*" /> 
    </Grid.ColumnDefinitions> 
    <Grid Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Margin="0,-10,730,0" Background="Transparent" Panel.ZIndex="1"> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="*" /> 
      <RowDefinition Height="auto" /> 
     </Grid.RowDefinitions> 
     <StackPanel> 
      <GroupBox Header="" Margin="0,4,10,4" Height="540" HorizontalAlignment="Right" Width="532"> 
       <Canvas Margin="0,0,0,1"> 
        <Rectangle HorizontalAlignment="Left" Height="19" Stroke="White" VerticalAlignment="Top" Width="493" Canvas.Left="17" Canvas.Top="201"> 
         <Rectangle.Fill> 
          <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
           <GradientStop Color="LightGray" Offset="1" /> 
           <GradientStop Color="LightGray" /> 
           <GradientStop Color="White" Offset="0.5" /> 
          </LinearGradientBrush> 
         </Rectangle.Fill> 
        </Rectangle> 
        <Rectangle Fill="Transparent" HorizontalAlignment="Left" Height="295" Stroke="Gray" VerticalAlignment="Top" Width="493" Canvas.Left="17" Canvas.Top="219"/> 
        <Image Stretch="Fill" x:Name="ImagePhoto" HorizontalAlignment="Left" VerticalAlignment="Top" Height="123" Width="120" Source="/HSDLAdminPortal;component/Resources/photo_test.png" Canvas.Top="3" Canvas.Left="37"/> 
        <Label x:Name="LblPhoto" Content="Photo" HorizontalAlignment="Left" Background="Transparent" VerticalAlignment="Top" FontSize="10" FontWeight="Bold" Height="22" Width="62" Canvas.Top="124" Canvas.Left="75"/> 
        <Border BorderBrush="Black" BorderThickness="1" Height="128" Canvas.Left="37" Canvas.Top="1" Width="119"/> 
        <Rectangle Height="22" Canvas.Left="221" Canvas.Top="1" Width="289"> 
         <Rectangle.Fill> 
          <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
           <GradientStop Color="LightGray" Offset="1" /> 
           <GradientStop Color="LightGray" /> 
           <GradientStop Color="White" Offset="0.5" /> 
          </LinearGradientBrush> 
         </Rectangle.Fill> 
        </Rectangle> 
        <Rectangle Fill="Transparent" HorizontalAlignment="Left" Height="163" Stroke="White" VerticalAlignment="Top" Width="289" Canvas.Left="221" Canvas.Top="23"/> 
        <Label x:Name="LblMiscellaneous" Style="{DynamicResource LabelInfoHeaderStyle}" Foreground="Black" Content="Miscellaneous" Background="Transparent" Canvas.Left="342" Canvas.Top="-1" Height="28" FontWeight="ExtraBold"/> 
        <Label x:Name="LblPersonalInfo" Style="{DynamicResource LabelInfoHeaderStyle}" Content="Personal Info" Foreground="Black" Background="Transparent" Canvas.Left="221" Canvas.Top="195" Height="54" Width="125" FontWeight="ExtraBold"/> 

        <Label x:Name="LblApplicantType" ToolTip="text tooltip" Style="{DynamicResource LabelInfoStyle}" Content="Applicant Type : " Background="Transparent" Canvas.Left="231" Canvas.Top="40" FontWeight="Bold"/> 
        <Label x:Name="LblApplicantTypeValue" Style="{DynamicResource LabelInfoValueStyle}" Content="N/A" Background="Transparent" Canvas.Left="360" Canvas.Top="40" FontWeight="Bold"/> 

        <Label x:Name="LblApplicantNameValue" Style="{DynamicResource LabelInfoValueStyle}" ToolTip="Sample ToolTip" Content="N/A" ToolTip="Sample ToolTip" Background="Transparent" Canvas.Left="190" Canvas.Top="220" FontWeight="Bold"/> 
        <Image x:Name="ImageSignature" HorizontalAlignment="Left" VerticalAlignment="Top" Height="37" Width="97" Source="/HSDLAdminPortal;component/Resources/signature.png" Canvas.Top="149" Canvas.Left="52"/> 
        <Border BorderBrush="Black" BorderThickness="1" Height="44" Canvas.Left="37" Canvas.Top="142" Width="119"/> 
        <Label x:Name="LblSignature" Content="Signature" HorizontalAlignment="Left" Background="Transparent" VerticalAlignment="Top" FontSize="10" FontWeight="Bold" Height="36" Width="62" Canvas.Top="181" Canvas.Left="69"/> 
        <Canvas x:Name="AttachmentDetailsCanvas" Width="520" Height="501" Visibility="Visible" Opacity="0"> 
         <Canvas.Background> 
          <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
           <GradientStop Color="LightGray" Offset="1" /> 
           <GradientStop Color="LightGray" /> 
           <GradientStop Color="White" Offset="0.5" /> 
          </LinearGradientBrush> 

         </Canvas.Background> 

         <Rectangle Height="45" Canvas.Left="0" Canvas.Top="1" Width="520"> 
          <Rectangle.Fill> 
           <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
            <GradientStop Color="LightGray" Offset="1.2" /> 
            <GradientStop Color="LightGray" /> 
            <GradientStop Color="#0077b3" Offset="0" /> 
           </LinearGradientBrush> 
          </Rectangle.Fill> 
         </Rectangle> 
         <Label x:Name="attachmentDetails" Content="Attachment Details" Foreground="White" Background="Transparent" FontSize="20" VerticalAlignment="Top" FontWeight="Bold" Height="36" Width="220" Canvas.Top="4" Canvas.Left="143" /> 

         <Image Source="/Resources/Images/attachment.png" Height="400" Width="510" Canvas.Top="86" x:Name="atcImg"/> 
         <Button ToolTip="Click To Hide Image" x:Name="hideImageButtonButton" Width="42" Height="42" Click="hideImageButton_Click" Canvas.Left="478" Canvas.Top="1"> 
          <StackPanel Orientation="Horizontal"> 
           <Image x:Name="close_image" HorizontalAlignment="Center" VerticalAlignment="Center" Source="/Resources/hide.png" Height="42" Width="42" OpacityMask="{DynamicResource {x:Static SystemColors.WindowBrushKey}}" Stretch="UniformToFill" /> 
          </StackPanel> 
         </Button> 
        </Canvas> 
       </Canvas> 
      </GroupBox> 
     </StackPanel> 
    </Grid> 

</Grid>

來源

2016-11-22 Ghost Developer

如果我刪除樣式，工具提示工作正常。檢查你的風格是否與你的工具提示做了什麼。 –

您的本地風格聲明優先於您的工具提示屬性，以便能夠幫助您獲得所需內容，向我們顯示資源 – JohnChris

https://msdn.microsoft.com/en-us/library/ms743230(v=vs .110）.aspx依賴屬性值優先 – JohnChris

做標籤的位置，但由於不透明度（在父級控制下）而未顯示。現在我使用圖像的可見性而不是Opacity &它解決了我的問題。謝謝你們。

來源

2016-11-23 11:55:50

明確的風格。 Style屬性直接設置。在大多數情況下，樣式不是內聯定義的，而是通過顯式鍵引用爲資源。在這種情況下，Style屬性本身的行爲就好像它是本地值，優先項3一樣。

關於優先級的MSDN網站。

由於樣式設置爲本地值，它優先於下一個本地值。

添加工具提示，以你的風格，並添加你想要有文本爲它與動態資源

UPDATE

工作，尋找你的代碼後，很顯然，你的標籤只是覆蓋由一個透明的網格，所以你的鼠標懸停永遠不會超過它。 Put，Panel.ZIndex =「1」，它會工作，因爲這會帶來你的標籤在所有東西

我也看看MSDN網站，如果你打算使用多個zindex來克服你的問題，只是爲了更多地瞭解它。

https://msdn.microsoft.com/en-us/library/system.windows.controls.panel.zindex(v=vs.110).aspx

<Label x:Name="LblApplicantNameValue" Panel.ZIndex="1" Style="{DynamicResource LabelInfoValueStyle}" ToolTip="Sample ToolTip" Content="this label now works" Background="Transparent" Canvas.Left="360" Canvas.Top="66" FontWeight="Bold"/>

來源

2016-11-22 11:12:16 JohnChris

爲標籤申請人名稱您有工具提示設置兩次 – JohnChris

@GhostDeveloper。在上面的答案中解決了您的問題，請在其正常工作時將其標記爲:)（綠色勾號） – JohnChris

我很感謝您的努力，但不幸的是它無法正常工作。同時我找到了解決方案。「attachment.png」被放置在標籤的相同位置，這就是爲什麼它不起作用。謝謝:) –

您可以通過覆蓋工具提示控制的模板樣式的工具提示，如下面的圖片（attachment.png）的位置被放置在同一個問題How to style WPF tooltip like a speech bubble?

來源

2016-11-22 11:47:11

工具提示未顯示在WPF標籤中？

回答

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