title: How to validate expression on button click in asp.net C#
body: <p>I am making a website and I have made a form fields like email field and validation expressions associated with it. Validation is initiated on text change. But i want it t execute on "submit" button click event.
  I have searched but could not locate the solution to my problem. Please tel me why is this happening and how can i make it right. I am new to this web development field, So need help from you guys.</p>
  
  <p>Thanks in advance!!!</p>
  
  <p>Hamad</p>