WPF - Combobox

<Window x:Class = "WPFComboBoxControl.MainWindow" 
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml" 
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008" 
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006" 
   xmlns:local = "clr-namespace:WPFComboBoxControl" 
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">
	
   <Grid>
	
      <ComboBox x:Name = "comboBox" HorizontalAlignment = "Left" 
         Margin = "80,53,0,0" VerticalAlignment = "Top" Width = "120"
         SelectionChanged = "Combo_SelectionChanged"> 
			
         <ComboBoxItem Content = "Item #1" /> 
         <ComboBoxItem Content = "Item #2" /> 
         <ComboBoxItem Content = "Item #3" />
      </ComboBox>
		
      <ComboBox x:Name = "comboBox1" HorizontalAlignment = "Left"
         Margin = "80,153,0,0" VerticalAlignment = "Top" Width = "120"
         IsEditable = "True"
         SelectionChanged = "Combo1_SelectionChanged">
			
         <ComboBoxItem Content = "Item #1" /> 
         <ComboBoxItem Content = "Item #2" /> 
         <ComboBoxItem Content = "Item #3" />
      </ComboBox>
		
      <TextBox x:Name = "textBox" HorizontalAlignment = "Left" 
         Height = "23" Margin = "253,53,0,0" TextWrapping = "Wrap"
         VerticalAlignment = "Top" Width = "200" /> 
			
      <TextBox x:Name = "textBox1" HorizontalAlignment = "Left"
         Height = "23" Margin = "253,152,0,0" TextWrapping = "Wrap"
         VerticalAlignment = "Top" Width = "200" />
			
   </Grid> 
	
</Window>