//撤销授权OA protected void lbtnCancel_Click(object sender, EventArgs e) { List <Authorization> items = new List <Authorization>(); if (ViewState["SelectOAItems"] != null) { items = (List <Authorization>)ViewState["SelectOAItems"]; } foreach (var item in items) { BPMHelp.DeleteOAAuthorizations(item.AuthorizationID); } Response.Redirect("AuthorizationList.aspx", false); }