填充数据集

/// <summary>
        /// 初始化数据库连接适配器按照strsql进行填充的DataTab
        /// </summary>
        public string GetAdapterTable(string strsql, DataTable tab)
        {
            if (!IsHaveTran)
            {
                BeginTransaction();
                _autoCommit = true;
            }

            if (sda == null)
                sda = new SqlDataAdapter(strsql, SqlConnection);
            else
                sda.SelectCommand.CommandText = strsql;
            //if (IsHaveTran)
            //{
            //    sda.SelectCommand.Transaction = sqltran;
            //}
            sda.SelectCommand.Transaction = sqltran;
            try
            {
                sda.Fill(tab);
                m_dbLog = new DbUpdateLog();
                m_dbLog.UnChangedDT = tab.Copy();
                m_dbLog.ExecuteSQL = strsql;
                m_dbLog.FunctionType = DbUpdateLog.EnumFunctionType.UpdateDataAdapter;
                m_dbLog.UserInfo_ID = HttpContext.Current.Session["UserID"].ToString();
                return string.Empty;
            }
            catch (Exception e)
            {
                return e.Message;
            }
        }