how to get a value from textbox which is bound to a datagrid

[liunx]

i have a datagrid which have textbox, for ex. txtPAmount that will generate on runtime.

now while we enter one textbox, i have to add the all txtPAmount from the datagrid and add the values and put it to another textbox which is outside the datagrid.

i have to check this always when enter values to each txtPAmount in the datagrid.

can i use javascript for this or any other way avail.

can any one help to solve it and provide the code.....


thanks

rajesh