Posted by marcel ethan March-09-2013 3:54 AM ASP.NET MVC ASP.NET MVC 1 Reply(s) 3861 View(s) Ratings: Rate this: Hi Expert! I have one textbox in my MVC 4 project. In this textbox user entered zip code of US format. I want to auto set US format zip code during entered or after leave the textbox. US format zip code as following 58595 Please help me! Thanks in advance!