Avioding XSS in framework 2.0

Hi Friends,

I want to avoid XSS attacks on my web application. As i know we can do using AntiXSS nuget package.

But in my case i am using framework 2.0.. How can i implement AntiXSS and SQL injection in my application.

public void testmethod(string user_input){

var a = DBCall(user_input);

}

here i want to validate or sanitize user input.