Regular expression for selenium webdriver xpath

Question

xpath = ".//*[@id='ctl00_ctl00_MainContent_ChildContent1_dgDataList_ctl06_btnEdit']";

here 106 is varying every time , how to use regular expression in xpath

Answer 1

xpath = ".//*[matches  (@id, 'ctl00_ctl00_MainContent_ChildContent1_dgDataList_ctd+_btnEdit']";