DataTable 快速导入数据库——百万条数据只需几秒！！

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace WFM_SANY_SPDM
{
    public class SqlBulk
    {
        public void InsertTable(DataTable dt, string TabelName,DataColumnCollection dtColum)
        {
            string str = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString.ToString();
            //声明数据库连接
            SqlConnection conn = new SqlConnection(str);

            conn.Open();
            //声明SqlBulkCopy ,using释放非托管资源
            using (SqlBulkCopy sqlBC = new SqlBulkCopy(conn))
            {
                //一次批量的插入的数据量
                sqlBC.BatchSize = 1000;
                //超时之前操作完成所允许的秒数，如果超时则事务不会提交 ，数据将回滚，所有已复制的行都会从目标表中移除
                sqlBC.BulkCopyTimeout = 60;

                //設定 NotifyAfter 属性，以便在每插入10000 条数据时，呼叫相应事件。
                sqlBC.NotifyAfter = 10000;
              // sqlBC.SqlRowsCopied += new SqlRowsCopiedEventHandler(OnSqlRowsCopied);

                //设置要批量写入的表
                sqlBC.DestinationTableName =TabelName;

                //自定义的datatable和数据库的字段进行对应
                //sqlBC.ColumnMappings.Add("id", "tel");
                //sqlBC.ColumnMappings.Add("name", "neirong");
                for (int i = 0; i < dtColum.Count; i++)
                {
                    sqlBC.ColumnMappings.Add(dtColum[i].ColumnName.ToString(), dtColum[i].ColumnName.ToString());
                }
                //批量写入
                sqlBC.WriteToServer(dt);
            }
            conn.Dispose();

        }
        //响应时事件
        void OnSqlRowsCopied(object sender, SqlRowsCopiedEventArgs e)
        {
            // Response.Write("<br/> OK! ");
        }

    }
}