DynAreaErrorStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/FLY.ControlLibrary;component/Themes/Dictionary_MyStyle.xaml"/>
        <ResourceDictionary Source="pack://application:,,,/FLY.ControlLibrary;component/Converter/Dictionary_MyConv.xaml"/>
    </ResourceDictionary.MergedDictionaries>
    <Style TargetType="Button" x:Key="DynAreaErrorStyle" BasedOn="{StaticResource Styles.Button.Empty}">
        <Setter Property="Command" Value="{Binding OpenWarningCmd}"/>
        <Setter Property="Visibility" Value="{Binding IsError,Converter={StaticResource visbilityconv}}"/>
        <Setter Property="Content">
            <Setter.Value>
                <Border Style="{StaticResource Styles.Module.Border}" Background="{StaticResource Brushes.Validation}"  >
                    <Grid >
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="auto"/>
                            <ColumnDefinition/>
                        </Grid.ColumnDefinitions>
                        <Path Margin="{StaticResource ControlMargin}" Fill="White" Stretch="Uniform" Width="60" Height="60" SnapsToDevicePixels="True" Data="{StaticResource Geometry_alert-circle-outline}"  >
                            <Path.Style>
                                <Style TargetType="Path">
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding IsError}" Value="True">
                                            <DataTrigger.EnterActions>
                                                <BeginStoryboard>
                                                    <Storyboard RepeatBehavior="Forever" >
                                                        <DoubleAnimation BeginTime="0:0:0" Storyboard.TargetProperty="Opacity" From="1" To="0" Duration="00:00:01" />
                                                        <DoubleAnimation BeginTime="0:0:1" Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="00:00:01" />
                                                    </Storyboard>
                                                </BeginStoryboard>
                                            </DataTrigger.EnterActions>
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </Path.Style>
                        </Path>
                        <TextBlock Grid.Column="1" Margin="5" VerticalAlignment="Center" TextWrapping="Wrap" FontSize="22" Foreground="White" Text="{Binding ErrMsg}"/>

                    </Grid>

                </Border>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>