CODEWITHSUNDEEP
c#wpf
Angel
Angel

Reputation: 309

Show tooltip on custom error template

I created a custom error template to show validation errors. Here is my XAML:

<Style TargetType="Control" x:Key="myErrorTemplate">
    <Setter Property="Validation.ErrorTemplate">
        <Setter.Value>
            <ControlTemplate>
                <DockPanel LastChildFill="True">
                    <TextBlock DockPanel.Dock="Right"
                               Foreground="Red"
                               FontSize="26"
                               FontWeight="Bold"
                               Text=" !"
                               Margin="0,-8,0,0" />
                    <Border>
                        <AdornedElementPlaceholder Name="myControl" />
                    </Border>
                </DockPanel>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Style.Triggers>
        <Trigger Property="Validation.HasError" Value="true">
            <Setter Property="ToolTip"
                    Value="{Binding RelativeSource={x:Static RelativeSource.Self},
            Path=(Validation.Errors)[0].ErrorContent}" />
        </Trigger>
    </Style.Triggers>
</Style>

This will place an exclamation mark near the TextBox when a validation error occurs. Currently this template will show an error tooltip when mouse hovers over the TextBox. I want to show tooltip also when I hover over the exclamation mark (textblock). How do I achieve this?

Upvotes: 4

Views: 879

Answers (1)

Nitin Purohit
Nitin Purohit

Reputation: 18580

Try this:

       <TextBlock DockPanel.Dock="Right"
                           Foreground="Red"
                           FontSize="26"
                           FontWeight="Bold"
                           Text=" !"
                           Margin="0,-8,0,0" >
            <TextBlock.Style>
                  <Style TargetType="TextBlock">
                      <Style.Triggers>
                         <DataTrigger Binding="{Binding Path=(Validation.HasError), RelativeSource={RelativeSource TemplatedParent}}" Value="True">
                           <Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource TemplatedParent},
        Path=(Validation.Errors)[0].ErrorContent}" />
                       </DataTrigger>
                      </Style.Triggers> 
                  </Style>
            </TextBlock.Style>
       </TextBlock>

Upvotes: 1

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