MyTable.Rows.Count does not increase when dynamically adding rows

Question

I have a table having two rows initially. And i have also two buttons that adds and delete rows dynamically.. When i click the "add row" button it will add rows sucessfully. My first problem is, i notice that the value of table1.rows.count does not increasing. It always remain on 2. Which i initially set on design time. Also after solving this problem, please help me to do the things to delete the last row when i click the "delete row" . Thanks