Add textbox button

Question

Hallo all, greating! I'm new member in VB.Net Heaven. Nice to meet you all.

I want to ask about ASP.Net Web Application, how to make a button that can be use to add a textbox or maybe some textbox on my webform?

For Example:
I have application for Job Monitoring and I have one textbox for activity and i need some textbox for sub-activity. But I don't know how to make my button work and can add some textbox under my first sub-activity. I was try to make manual by put some textbox on my form and then make them unvisible. And I was add some button (add and remove) beside that textbox. But when i run it on Internet Explorer or other browser, its look so fall apart. The button is not neat.

I hope everyone can help me to fix my problem. Thank's for the time, i'll wait for your help.
see you

Sincerely Yours


Hajry