Difference between Label and TextBlock

TextBlock is not a control

Even though TextBlock lives in the System.Windows.Controls namespace, it is not a control. It derives directly from FrameworkElement. Label, on the other hand, derives from ContentControl. This means that Label can:

1. Be given a custom control template (via the Template property).
2. Display data other than just a string (via the Content property).
3. Apply a DataTemplate to its content (via the ContentTemplate property).

4. Do whatever else a ContentControl can do that a FrameworkElement cannot.

   • Label text is grayed out when disabled
   • Label supports access keys
   • Label is much heavier than TextBlock

Source

Some more interesting reads below

• http://www.wpfwiki.com/WPF%20Q4.1.ashx
• What is the difference between the WPF TextBlock element and Label control?