Getting error while deleting crm record using datagrid asp.net

var crmService = CRMConnection.GetCRMService();

 System.Web.UI.WebControls.Label guidLbl = e.Item.FindControl("lblguid") as System.Web.UI.WebControls.Label;
                string _id = guidLbl.Text;
                Guid guid = Guid.Parse(_id);
                if (guid != null && Id == guid)
                {
                    crmService.Delete(intelCRM, guid);
                }