title: ValidationRule for WPF Textbox
body: <p>I am newbie to WPF.In my UserControl,I have 8 labels and its respective 8 textboxes as follows:</p>
  
  <pre><code>1.Label : abc   2.Label : def
    TextBox1 :        TextBox2 :
  
  3.Label :xyz    4. Label : ghi
    Textbox3 :        TextBox4 :
  </code></pre>
  
  <p>Each of these textbox text property should contain text ending with its respective label name
  for <code>TextBox1.text</code> should be <code>xxxx.abc</code>, <code>TextBox2.text</code> should be xxxx.def and so on.if not textbox should have red border.</p>
  
  <p>hope I am clear with the details.So Do i need to write different <code>ValidationRule</code> for each textbox??</p>
  
  <p>Any you inputs??</p>