To make datagrid values reflect in List

[purni]

hi all,

i ve a list in my pop up window in my application.... also
i ve a datagrid and in one of my column i ve a renderer as button...
on button click my pop up appears..... in my pop up i ve a list which
contains the value of corresponding row value of my datagrid column.
i;m appending values to my datagrid column so tat it should also get
reflected in my list...

if my data grid column2 contains two values separated by a seperator
in a cell as group1, group 2 i want this to be reflected in my list as
next next values as group 1 and then in next row group 2........


now its coming as like its in datagrid as group 1,group 2.... but i
need this as in next row of the list.....


how to do this????/