title: Best way to trim value in textbox before save/insert using formview into datasource
body: <p>By triming i mean something like.</p>
  
  <p>First name "John      " -> trim to "John"</p>
  
  <p>Last name  "Lennon  " -> trim to "Lennon"</p>
  
  <p>I have those Textbox in FormView, binding with property using Bind("FirstName").</p>
  
  <p>The FormView bind with Entity Datasource.</p>
  
  <p>I want those value to be trim before saving, what is the best way to do this ?</p>