Alignment problem inside gridview during runtime

Hi
I have gridview and in each row of footer template I have textbutton and "add" button
I have required field validator and regular expression validator for each text buttom 
 if i click "add" button  ,both validation controls are executed and a new line space is created below textbox  ,so the gridview alignment problem occurs.
how to execute all  the validations in single line.
Can we use dynamic validation controls and  how to do it
Thanks
chandran
...