Datetime help on asp.net

[CesarePlay]

I have a problem I been trying to solve.

When a user selects a date from the calendar the textbox needs to display this date plus one year.

I have tried using addyear but it is not working properly. I tried google but not quite finding what I am looking for. Can anyone help?

I am using asp.net and the textbox name I have to use is input_txtDate1.Text.

[RuadRauFlessa]

You are refering to an action which needs to happen client-side. This you would have to do with JavaScript.

[CesarePlay]

How does it work? Also I forgot to mention it must open happen once not everytime they open the page.

[RuadRauFlessa]

I am not too hot on JS might want someone else to give you a couple of pointers.

[CesarePlay]

Ok. I got it to add year year to the date. Problem is it changes the date of current saved data which it must not do.