title: Check if textbox text was changed since form was opened
body: <p>Howdy<br>
  I have a form in my application which has 7 textboxes.  In the constructor of the form I run the method "MakeText()" that inserts values from a MySqlDataReader into the textboxes. </p>
  
  <p>The user can change the values in those textboxes and when a "submit" button is clicked it will run an update query on the database to write all the changes made.<br>
  This is all fine, but I find it a waste of resources to be querying the database even if the user didn't change any of the text in the textboxes.  </p>
  
  <p>So I need some way to check if the user changed any of the values in the textboxes after the form was loaded.<br>
  I'd like to do this on the application level instead of letting the database handle it.</p>
  
  <p>How can I do this?</p>
  
  <p><strong>EDIT:</strong> I just thought of this.  Maybe I could put all the values into class strings when the form loads and then just check against that before running the query.  Sometimes you just need to put a question into words to think of the answer :D  </p>
  
  <p>That's the best I could think up anyway...</p>