WPF之日历控件报警信息显示

1.错误报警模板

 <!--错新增误验证模板-->
                <Setter Property="Validation.ErrorTemplate">
                    <Setter.Value>
                        <ControlTemplate>
                            <StackPanel Orientation="Vertical">
                                <AdornedElementPlaceholder />
                                <TextBlock Foreground="Red"
                                           DockPanel.Dock="Bottom"
                                           VerticalAlignment="Bottom"
                                           FontSize="10"
                                           Margin="0,3,0,0"
                                           Text="{Binding Path=ErrorContent}">
                                </TextBlock>

                            </StackPanel>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <Trigger Property="Validation.HasError"
                             Value="True">
                        <Setter Property="BorderBrush"
                                Value="Red" />
                        <Setter Property="BorderThickness"
                                Value="0.5" />
                        <!--报警时，日历时间文本框边框色-->
                        <!--<Setter Property="Background"
                                Value="Red" />-->
                        <!--报警时，日历时间文本字体色-->
                        <!--<Setter Property="Foreground"
                                Value="Red" />-->
                        <!--报警信息浮窗提示-->
                        <!--<Setter Property="ToolTip"
                                Value="{Binding RelativeSource={RelativeSource Self},Path=(Validation.Errors)[0].ErrorContent}">
                            </Setter>-->
                    </Trigger>
                </Style.Triggers>