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Restrict User to write any other words except digit in Textbox

Posted By:Ravi Ranjan Kumar       Posted Date: June 29, 2011    Points: 40    Category: Validations    URL: http://www.dotnetspark.com  

This article enable you to learn how to restrict user to write any thing except digit.

By using given code you can restrict user to write any thing except digits 
if (!(e.KeyChar >= '0' && e.KeyChar <= '9'))
                e.Handled = true;
alternative tips
if (!char.IsDigit(e.KeyChar))
               e.Handled = true;


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