title: How to prevent negative number input on keydown in ASP.net
body: <p>I am using asp.net textbox with textmode=numeric. The issue is, if I am having 0 in textbox, on keydown it shows -ve value. I don't want to show negative value in textbox on any keypress.</p>
  
  <p>Is anybody having idea how to stop keydown on 0 and avoid negative value input.</p>