fix c# app- add string of parameters to sp and display results in datagridview

My code is below. My aim is to take list of ordernumbers to the sp to process. Then have the return data viewed in a datagridview. string connstr = @" Data Source = GNC7; Initial Catalog = ONYX; Integrated Security = True"; Security Info = True; User ID = Test; Password = Test"; SqlConnection conn = new SqlConnection(connstr); try { [login to view URL](); } catch (SqlException ex) { [login to view URL]([login to view URL]); } SqlCommand command = new SqlCommand(); [login to view URL] = conn; SqlDataReader dr = null; [login to view URL](); List<string> listTemp = new List<string>([login to view URL]([login to view URL], [login to view URL])); List<string> list = [login to view URL]().ToList(); string trimmedItem; StringBuilder builder = new StringBuilder(); foreach (var item in list) { [login to view URL]("\'" +item + "\',"); } trimmedItem = [login to view URL](); trimmedItem = [login to view URL]([login to view URL] - 1); [login to view URL] = "Usp_GetStains"; [login to view URL] = [login to view URL]; [login to view URL](trimmedItem); dr = [login to view URL](); [login to view URL](); return;