title: Check if input in textbox is email
body: <p>I am trying to validate if the userinput is an email adress (adding a member to database).</p>
  
  <p>The user will enter data in TextBox, when the validating event gets called; I want to check if the input is a valid email adress. So consisting of atleast an @ and a dot(.) in the string.</p>
  
  <p>Is there any way to do this through code, or perhaps with a Mask from the MaskedTextbox?</p>