ASP.NET - get radio button selection in grid view.

Hi,

i have a grid view having 8 columns, where i am adding the radio button at runtime in RowDataBound event of gridview in 4 columns. the radio button will be visible on some conditions and there can be one radion button as selected in one row.  when user click any radio button, i need to check some value in DB side. i have added

radiobutton.CheckedChanged +=

new EventHandler(radiobutton_CheckedChanged);

but the problem is whenever i click any radio button, i got the focus for all selected radio button. means if 5 radio button is selected in 5 rows, then the radiobutton's checkedchanged event is called 5 times for every selected radio button.
how can i get only the current selected radio button value, not all???
pls help.

I also faced the same problem but couldn't find a proper solution. However i could achieve the desired result with the following workaround.

1. Added a javascript function in the radiobutton click like following (along with checkededChanged also add this)
    rdoInhouse.Attributes.Add("onClick", string.Concat("SelectOne(this,'grdUser',", currentRow, ")"));
2. In the SelectOne javascript function fetch the selected radiobutton id and assign it to a hidden field.
3. In the radiobutton CheckedChanged event get the radio button id from sender object and compare it with
the value stored in hidden field, if it matches then execute the db call.

Hope this helps. If anyone has a better solution please reply becuase i am also looking for it :)