Using regular expressions in ASP.Net is even easier than implementing them in plain html and yet few developers are using them. In this article I will show two ways of implementing Regular Expressions, using a Regular Expression Validator and using plain Javascript in ASP.Net. Both examples are very very simple. We will validate a telephone number and an email address. How to Implement Regular Expressions in ASP.Net with Validator Controls. 1) Create a new a page in a web application project in visual...