public bool UpdateCaseInfo(Dictionary<string, object> Str, long caseId)        {            using (DbManager db = DbFactory.DB)            {                string updateStr = "";                List<IDbDataParameter> paraS = new List<IDbDataParameter>();                foreach (var item in Str)                {                    updateStr += item.Key + "=@" + item.Key+ ",";                    paraS.Add(db.Parameter("@" + item.Key, item.Value));                                   }                updateStr = updateStr.Remove(updateStr.Length - 1);                updateStr = "update dbo.T_table set " + updateStr + " where CaseID=‘" + caseId.ToString() + "‘";                return db.SetCommand(updateStr, paraS.ToArray()                    ).ExecuteScalar<bool>();            }        }