我在HintAssist内有一个按钮，它是TextBox的一部分。但是，此点击事件不起作用。也许HintAssist内部的所有控件都不接受事件。

TextBox + Button image

代码。该按钮位于

               <TextBox Style="{StaticResource MaterialDesignFloatingHintTextBox}" IsReadOnly="True" 
                 VerticalAlignment="Center" Grid.Column="0" Margin="5,10,0" AutomationProperties.HelpText="Nombre" Height="37" Text="2019/02/01 12:13" Grid.Row="1">
                <materialDesign:HintAssist.Hint>
                    <StackPanel Orientation="Horizontal" Margin="-2 0 0 0" >
                        <TextBlock >Modelo</TextBlock>
                        <Button Width="20" Height="20" Click="fire" Padding="0" Style="{Dynamicresource MaterialDesignFloatingactionDarkButton}"  VerticalAlignment="Center" Margin="10,0">
                            <materialDesign:PackIcon Kind="MoreHoriz" Height="20" Width="20" />
                        </Button>
                    </StackPanel>
                </materialDesign:HintAssist.Hint>
            </TextBox>