Get value of rows when it s checkbox is checked in radgrid

[Fresh KaT]

I have a radgride with checkbox in each rows.I want when i click on button,it checks id of each rows that checked,put into the variable..I know this code for gridview but I do not know equivalent of this code for radgrid\[code\]foreach (GridViewRow rw in grid1.Rows) { CheckBox chkBx = (CheckBox)rw.FindControl("Check"); if (chkBx != null && chkBx.Checked) { id= grid1.Rows[0].Cells[3].Text.ToString(); } }\[/code\]