diff --git a/PacticeSolution/DataBindingSample/MainWindow.xaml b/PacticeSolution/DataBindingSample/MainWindow.xaml
index 15483cb..5988a93 100644
--- a/PacticeSolution/DataBindingSample/MainWindow.xaml
+++ b/PacticeSolution/DataBindingSample/MainWindow.xaml
@@ -11,7 +11,7 @@
         <TextBox x:Name="tbxByXaml" VerticalAlignment="Center"/>
         <Label x:Name="lblByXaml" Height="30" VerticalAlignment="Center" Content="{Binding ElementName=tbxByXaml, Path=Text}"/>
         <Label HorizontalAlignment="Center">--- By Code Behind ---</Label>
-        <TextBlock x:Name="tbxByCodeBehind"/>
+        <TextBox x:Name="tbxByCodeBehind"/>
         <Label x:Name="lblByCodeBehind" Height="30" VerticalAlignment="Center"/>
     </StackPanel>
 </Window>
diff --git a/PacticeSolution/DataBindingSample/MainWindow.xaml.cs b/PacticeSolution/DataBindingSample/MainWindow.xaml.cs
index c84947b..22503d4 100644
--- a/PacticeSolution/DataBindingSample/MainWindow.xaml.cs
+++ b/PacticeSolution/DataBindingSample/MainWindow.xaml.cs
@@ -30,7 +30,7 @@ namespace DataBindingSample
         {
             Binding binding = new Binding();
             binding.Source = tbxByCodeBehind;
-            binding.Path = new PropertyPath(tbxByCodeBehind.Text);
+            binding.Path = new PropertyPath(TextBox.TextProperty);
             lblByCodeBehind.SetBinding(Label.ContentProperty, binding);
         }
     }