I want to add another row

Question

Previous Working Company

Company Name  Designation  Project title       Add New(Button)

When i click add new button i want to  add another row.

For exmaple

Tcs             Software Engineer            CRMS

Infosys      Software Engineer             Billing

simantenously i want to add another row.

how To do.Please help me.for that how to write the code using asp.net with CSharp.

Regards,

Rao.