This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
When you enter text into a text-box, that text is represented as a String, always. You could write code that examines that String and decides whether it makes sense to parse that String into a Date, or an int, or some other type.