[Sh*t Src] XAML TextBox w/ Placeholder

<Style x:Key="PlaceholderTextBox" TargetType="{x:Type TextBox}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type TextBox}">
                <Border x:Name="Back" BorderBrush="{TemplateBinding BorderBrush}" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}">
                    <Grid>
                        <ScrollViewer x:Name="PART_ContentHost" Width="{TemplateBinding Width}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Focusable="False"/>
                        <TextBlock x:Name="Placeholder" Visibility="Collapsed" Panel.ZIndex="-1" Text="{TemplateBinding Tag}" FontFamily="{TemplateBinding FontFamily}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Foreground="Gray" TextAlignment="Center"/>
                    </Grid>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="Text" Value="">
                        <Setter TargetName="Placeholder" Property="Visibility" Value="Visible"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

so um xaml textbox with a placeholder add your animatiosn whatever tf u want uh and this code is sh*t ik but whatever

so uh to use this:

<TextBox Tag="Search" Text="" VerticalAlignment="Top" Width="453" Style="{DynamicResource RoundedTextBox}" Background="#FF212121" Height="30" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" TextAlignment="Center" FontSize="14"/>

put your placeholder in the "Tag" property