WPF - Window Level

Defining a style on a window level can make it accessible by all the elements on that window. Given below is an example of window level where all the three text blocks have a common style.

<Window x:Class = "Styles.MainWindow" 
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml" 
   Title = "MainWindow" Height = "350" Width = "604"> 
	
   <Window.Resources> 
      <Style TargetType = "TextBlock"> 
         <Setter Property = "FontSize" Value = "24" /> 
         <Setter Property = "Margin" Value = "5" /> 
         <Setter Property = "FontWeight" Value = "Bold" /> 
      </Style> 
		
      <Style TargetType = "TextBox"> 
         <Setter Property = "HorizontalAlignment" Value = "Left" /> 
         <Setter Property = "FontSize" Value = "24" /> 
         <Setter Property = "Margin" Value = "5" /> 
         <Setter Property = "Width" Value = "200" /> 
         <Setter Property = "Height" Value = "40" /> 
      </Style> 
   </Window.Resources> 
	
   <Grid> 
      <Grid.RowDefinitions> 
         <RowDefinition Height = "Auto" /> 
         <RowDefinition Height = "Auto" /> 
         <RowDefinition Height = "Auto" /> 
         <RowDefinition Height = "*" /> 
      </Grid.RowDefinitions>
		
      <Grid.ColumnDefinitions> 
         <ColumnDefinition Width = "*" /> 
         <ColumnDefinition Width = "2*" /> 
      </Grid.ColumnDefinitions> 
		
      <TextBlock Text = "First Name: "/>  
      <TextBox Name = "FirstName" Grid.Column = "1" /> 
      <TextBlock Text = "Last Name: " Grid.Row = "1" />
      <TextBox Name = "LastName" Grid.Column = "1" Grid.Row = "1" /> 
      <TextBlock Text = "Email: " Grid.Row = "2" /> 
      <TextBox Name = "Email" Grid.Column = "1" Grid.Row = "2"/> 
   </Grid> 
	
</Window>

When you compile and execute the above code, it will produce the following window.