I am able to edit only the last row in a radgrid. When I select any other row ..it throws an error.. "There was a problem extracting DataKeyValues from the DataSource. Please ensure that DataKeyNames are specified correctly and all fields specified exist in the DataSource." Though I have defined all the datakeyvalues it still throws me error. Did any one faced this problem..If I m able to edit one row why not others..please suggest. Thanks