title: Textbox validation for IP Address in WPF
body: <p>I'm making a WPF Application using C#. I want to put validations on integers (0123456789 and ".") only.. The textbox is supposed to contain an IP address... So need to ensure that user key in their correct "IP Address" before they click on the "Submit" button... How can I achieve it?</p>
  
  <p>Thanks.</p>