wpf textbox tootip绑定本身的值

Question

<Style TargetType="{x:Type TextBox}"> 
    <Setter Property="Margin" Value="1"></Setter> 
    <Setter Property="Background" Value="{x:Null}"/> 
    <Setter Property="BorderThickness" Value="0"/> 
    <Setter Property="ToolTip"> 
     <Setter.Value> 
      <DockPanel Background="Gray"> 
       <TextBlock Text="{Binding Source={ TextBox.Text}}"/> 
      </DockPanel> 
     </Setter.Value> 
    </Setter> 
    <Style.Triggers> 
     <Trigger Property="IsMouseOver" Value="True"> 
      <Setter Property="Background" Value="Wheat"></Setter> 
     </Trigger> 
    </Style.Triggers> 


</Style> 

====================================== ==

"<TextBlock Text="{Binding Source={ TextBox.Text}}"/>" 

我想将文本框文本绑定到文本框的属性，如文本或其他东西。 但你知道我以上的无效工作。 你能帮助我，我非常感谢你

Answer 1

试试这个代码：

<Style TargetType="ToolTip"> 
    <Setter Property="Template"> 
    <Setter.Value> 
     <ControlTemplate TargetType="ToolTip"> 
     <DockPanel Background="Gray"> 
      <ContentPresenter/> 
     </DockPanel> 
     </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
</Style> 

<Style TargetType="{x:Type TextBox}"> 
    <Setter Property="Margin" Value="1"/> 
    <Setter Property="Background" Value="{x:Null}"/> 
    <Setter Property="BorderThickness" Value="0"/> 
    <Setter Property="ToolTip" Value="{Binding Text, RelativeSource={RelativeSource self}}"/> 
    <Style.Triggers> 
    <Trigger Property="IsMouseOver" Value="True"> 
     <Setter Property="Background" Value="Wheat"/> 
    </Trigger> 
    </Style.Triggers> 
</Style> 

Answer 2

下面是答案

<TextBox Text="Now is the winter of our discontent Made glorious summer by this sun of York; And all the clouds that lour'd upon our house In the deep bosom of the ocean buried." 
    ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=Text}" 
    Width="100" Margin="10"/> 

发现在https://wpf.2000things.com/2011/08/29/374-using-a-tooltip-to-display-the-full-contents-of-a-textbox/