Sql 批量插入数据

/// <summary>
        /// 批量插入用户配置
        /// </summary>
        /// <param name="connectionString">目标连接字符</param>
        /// <param name="TableName">目标表</param>
        /// <param name="dt">源数据</param>
        public void SqlBulkCopyByDatatable(string connectionString, string TableName, DataTable dt)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
                {
                    try
                    {
                        sqlbulkcopy.DestinationTableName = TableName;
                        for (int i = 0; i < dt.Columns.Count; i++)
                        {
                            sqlbulkcopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
                        }
                        sqlbulkcopy.WriteToServer(dt);
                    }
                    catch (System.Exception ex)
                    {
                        throw ex;
                    }
                }
            }
        }

  #region 将List转换到DataTable

                DataTable dt = new DataTable();
                dt.Columns.Add("RecordNum", typeof(string));
                dt.Columns.Add("UserName", typeof(string));
                dt.Columns.Add("ThemeID", typeof(int));
                dt.Columns.Add("ThemeName", typeof(string));
                dt.Columns.Add("TempID", typeof(int));
                dt.Columns.Add("TempRecordNumberID", typeof(string));
                dt.Columns.Add("TempUrl", typeof(string));
                dt.Columns.Add("ConfigDetail", typeof(string));
                dt.Columns.Add("Remark1", typeof(string));
                dt.Columns.Add("IsDelete", typeof(bool));
                dt.Columns.Add("CreateBy", typeof(string));
                dt.Columns.Add("CreateTime", typeof(DateTime));
                foreach (var p in ucList)
                {
                    DataRow row = dt.NewRow();
                    row["RecordNum"] = p.RecordNum;
                    row["UserName"] = p.UserName;
                    row["ThemeID"] = p.ThemeID;
                    row["ThemeName"] = p.ThemeName;
                    row["TempID"] = p.TempID;
                    row["TempRecordNumberID"] = p.TempRecordNumberID;
                    row["TempUrl"] = p.TempUrl;
                    row["ConfigDetail"] = p.ConfigDetail;
                    row["Remark1"] = p.Remark1;
                    row["IsDelete"] = p.IsDelete;
                    row["CreateBy"] = p.CreateBy;
                    row["CreateTime"] = p.CreateTime;
                    dt.Rows.Add(row);
                }

                #endregion

                //批量保存用户配置
                string myConn = ConfigurationManager.AppSettings["PortalConnString"].ToString();
                T_COM_UserConfigBll.Instance.SqlBulkCopyByDatatable(myConn, "T_COM_UserConfig", dt);

<add key="PortalConnString" value="initial catalog=HXPortal;data source=xx.xxx.xx.xx;password=xxxx;User id=xxx;" />