public string GetAdminEmails() { TAC_Team4Entities db = new TAC_Team4Entities(); List <string> list = db.TAC_User.Where(x => x.IsAdmin == true).Select(x => x.Email).ToList(); StringBuilder sb = new StringBuilder(); foreach (string item in list) { sb.Append(item); sb.Append(" "); } return(sb.ToString()); }