如何在DataGridTextColumn上的工具提示中显示IDataErrorInfo的错误？

With textbox, it works well when I put the following xml in App.xml :

使用文本框，当我将以下xml放在App.xml中时，它运行良好：

    <Style TargetType="{x:Type TextBox}" x:Key="TextBoxValidationStyle">
        <Style.Triggers>
            <Trigger Property="Validation.HasError" Value="true">
                <Setter Property="ToolTip"
            Value="{Binding RelativeSource={RelativeSource Self}, 
                   Path=(Validation.Errors)[0].ErrorContent}"/>
            </Trigger>
        </Style.Triggers>
    </Style>

But it only works for textbox, how to do a similar thing with DataGridTextColumn ?

但它只适用于文本框，如何使用DataGridTextColumn做类似的事情？

1 个解决方案

#1

Simply use DataGridTextColumn.ElementStyle and/or DataGridTextColumn.EditingElementStyle, for example:

只需使用DataGridTextColumn.ElementStyle和/或DataGridTextColumn.EditingElementStyle，例如：

<DataGridTextColumn MinWidth="80" ...>
    <DataGridTextColumn.ElementStyle>
    <Style TargetType="{x:Type TextBlock}">
            <Style.Triggers>
                <Trigger Property="Validation.HasError" Value="true">
                    <Setter Property="ToolTip"
                Value="{Binding RelativeSource={RelativeSource Self}, 
                       Path=(Validation.Errors)[0].ErrorContent}"/>
                </Trigger>
            </Style.Triggers>
        </Style>
    </DataGridTextColumn.ElementStyle>
</DataGridTextColumn>