Reply To: How to validate 3 textboxes by showing only single error message?

[Jack]

I am using ASP.NET to develop my web page,
And inside one page have 3 differently textboxes which representing the day, month, and year respectively.
Now i am going to validate 3 of them, no matter which textbox has incorrect data input.
Which mean i am trying to validate 3 textboxes by only showing 1 error message.
Thanks for in advance.