For this reason, in the past, many developers decided to add all their form validation logic exclusively to server-side code.Hello, I have 2 asp textbox, 2 radtextbox and 4 asp Regular Expression Validator and one button in my page.To validate input captured with server controls, you can use the Regular Expression Validator control. Input validation can become a security issue if an attacker discovers that you have made unfounded assumptions.To validate other forms of input, such as query strings, cookies, and HTML control input, you can use the System. The attacker can then supply carefully crafted input that compromises your application by attempting SQL injection, cross-site scripting, and other injection attacks.
And that's it - type text, click button, see error.We are competing in mind-blowing 20 categories and every vote counts!VOTE for Telerik NOW we are using Telerik version 2008. Thanks Velkumar Hello Velkumar, Unfortunately your version is three years old and we do not provide support for more than a year old versions.We cannot change the version of the telerik assembly in the project. Please consider replacing Rad Script Manager with Script Manager if that solves the problem.I am using two textboxes and a fckeditor and a button first textbox is for email address(To), second textbox is for subject.The advantage of writing validation logic in client-side code is that you can provide instant feedback to your users.