how to Copy Item one Gridview to another gridview

I have Two gridview left side where i populate data from Database and other will be empty at 1st time my requirement is when click any item and click to add button it will remove from that cell and add in to second gridview

same thing happens through drag and drop system Drag from one gridview to another well but it will be helpfull how to remove and add one gridview to another can someone give me idea

bye take care
regards
vikrant

Check out these links

http://forums.asp.net/p/1169459/1955946.aspx

http://www.codeproject.com/KB/HTML/SelectMoveRowsFromTables.aspx