SqlBulkCopy批量插入数据

    private void uiButton1_Click(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("CreateBy", typeof(System.Int64));
            dt.Columns.Add("CreateTime", typeof(System.DateTime));
            dt.Columns.Add("UpdateBy", typeof(System.Int64));
            dt.Columns.Add("UpdateTime", typeof(System.DateTime));
            dt.Columns.Add("IsDelete", typeof(System.Int32));
            dt.Columns.Add("platform", typeof(System.Int32));
            dt.Columns.Add("WebSiteId", typeof(System.Int64));
            dt.Columns.Add("GoodsId", typeof(System.String));
            dt.Columns.Add("Same_platform", typeof(System.Int32));
            dt.Columns.Add("Same_GoodsId", typeof(System.String));
            dt.Columns.Add("Same_Similarity", typeof(System.Double));
            dt.Columns.Add("Same_GoodsName", typeof(System.String));
            dt.Columns.Add("Same_GoodsUrl", typeof(System.String));
            dt.Columns.Add("Same_ImageUrl", typeof(System.String));
            dt.Columns.Add("Same_Price", typeof(System.Double));
            dt.Columns.Add("Same_Sold", typeof(System.Int32));

            var bll = new Database.BLL.Local.Gd_FindSameDbBll();
            List<Database.Model.Local.Gd_FindSame> list = bll.QueryAll();

            List<Gd_FindSame_Detail> list1 = new List<Gd_FindSame_Detail>();
            for (int i = 0; i < list.Count; i++)
            {
                var same = list[i];
                //var count = Database.Instance.FindSame_DetailDbBll.Count($"GoodsId='{ same.GoodsId}' and Same_GoodsId='{same.Same_GoodsId}'");
                //if (count > 0)
                //    continue;
                DataRow dr = dt.NewRow();
                dr["CreateBy"] = 4;
                dr["CreateTime"] = DateTime.Now;
                dr["UpdateBy"] = 4;
                dr["UpdateTime"] = DateTime.Now;
                dr["IsDelete"] = 0;
                dr["platform"] = same.platform;
                dr["WebSiteId"] = same.WebSiteId;
                dr["GoodsId"] = same.GoodsId;
                dr["Same_platform"] = same.Same_platform;
                dr["Same_GoodsId"] = same.Same_GoodsId;
                dr["Same_Similarity"] = same.Same_Similarity;
                dr["Same_GoodsName"] = same.Same_GoodsName;
                dr["Same_GoodsUrl"] = same.Same_GoodsUrl;
                dr["Same_ImageUrl"] = same.Same_ImageUrl;
                dr["Same_Price"] = same.Same_Price;
                dr["Same_Sold"] = same.Same_Sold;
                dt.Rows.Add(dr);
            }
            SqlBulkCopyByDatatable(SqlHelper.dbConn, "Gd_FindSame_Detail", dt);
        }

        /// <summary>
        /// 
        /// </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>
        private void SqlBulkCopyByDatatable(string connectionString, string TableName, DataTable dt)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
                {
                    try
                    {
                        sqlbulkcopy.BulkCopyTimeout = 180;
                        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;
                    }
                }
            }
        }