- C# code
CPJCDataDataContext cc = new CPJCDataDataContext(); LinkButton lbn = (LinkButton)sender; int index = ((GridViewRow)lbn.NamingContainer).RowIndex; int id = Convert.ToInt16(GridView1.DataKeys[index].Value); City city = cc.City.Where(p => p.Parent_ID == id).FirstOrDefault(); cc.City.DeleteOnSubmit(city); cc.SubmitChanges();//因为parent_id有很多个，如果我这样写的话，只能删除一个，请问，我该怎么写？？？
------解决方案--------------------
var citys = cc.City.Where(p => p.Parent_ID == id);
cc.City.DeleteAllOnSubmit(citys);
cc.SubmitChanges();