align label in the left of wpf code example

Example 1: set text in center wpf

<Button  Height="23" HorizontalAlignment="Left" Margin="190,115,0,0" Name="MyButton" VerticalAlignment="Top" Width="75" HorizontalContentAlignment="Stretch">
    <TextBlock Text="Shahin" TextAlignment="Center" />
</Button >

Example 2: xaml center label

<Label Text="Text Here" HorizontalTextAlignment="Center" FontSize="Title"/>