如何在ASP.NET中的ListView中的CheckedChanged事件中查找数据键？

I am using a list view inside that in item template i am using a label and a checkbox. I want that whenever user clicks on the check box the value should be updated in a table.i am using a datakeys in listview.on the basis of datakey value should be updated in the table. Query is:I am using a list view inside that in item temp