sqlbulkcopy 批量插入数据

批量插入 Datetable数据  通过sqlbulkcopy 插入1百万条数据 用时 10秒钟 (有兴趣的小伙伴可以去测试)

   /// <summary>
         ///
         /// </summary>
         /// <param name="connectionStr">连接字符串</param>
         /// <param name="dataTableName">数据库表名称</param>
         /// <param name="sourceDataTable"></param>
         /// <param name="batchSize"></param>
         public static void SqlBulkCopyByDataTable(string connectionStr, string dataTableName, DataTable sourceDataTable, int batchSize = )
         {
             using (SqlConnection connection = new SqlConnection(connectionStr))
             {
                 using (System.Data.SqlClient.SqlBulkCopy sqlBulkCopy = new System.Data.SqlClient.SqlBulkCopy(connectionStr, SqlBulkCopyOptions.UseInternalTransaction))
                 {
                     try
                     {
                         sqlBulkCopy.DestinationTableName = dataTableName;
                         sqlBulkCopy.BatchSize = batchSize;
                         for (int i = ; i < sourceDataTable.Columns.Count; i++)
                         {
                             sqlBulkCopy.ColumnMappings.Add(sourceDataTable.Columns[i].ColumnName, sourceDataTable.Columns[i].ColumnName);
                         }
                         sqlBulkCopy.WriteToServer(sourceDataTable);
                     }
                     catch (Exception ex)
                     {

                         throw ex;
                     }
                 }
             }
         }

调用：

     DataTable dt = new DataTable("测试");
             dt.Columns.Add("Id", typeof(int));
             dt.Columns.Add("Name", typeof(string));
             dt.Columns.Add("Age", typeof(int));
             for (int i = ; i <= ; i++)
             {
                 DataRow row = dt.NewRow();
                 row["Id"] = i;
                 row["Name"] = "名字" + i;
                 row["Age"] = i;
                 dt.Rows.Add(row);
             }
             Stopwatch stopWatch = new Stopwatch();
             stopWatch.Start();

             Console.WriteLine("批量插入table时间："+stopWatch.Elapsed);

批量插入List<T> :

    #region List<T> 批量插入
         /// <summary>
         ///
         /// </summary>
         /// <typeparam name="T"></typeparam>
         /// <param name="data"></param>
         /// <param name="sqlconn"></param>
         public static void Sqlbulkcopy_<T>(List<T> data, string sqlconn = null)
         {
             #region 待处理数据初始化处理
             List<PropertyInfo> pList = new List<PropertyInfo>();//创建属性的集合
             DataTable dt = new DataTable();
             //把所有的public属性加入到集合 并添加DataTable的列
             Array.ForEach<PropertyInfo>(typeof(T).GetProperties(), p =>
             {
                 pList.Add(p);
                 dt.Columns.Add(p.Name, p.PropertyType);
             });  //获得反射的入口（typeof（）） //要对 array 的每个元素执行的 System.Action。
             foreach (var item in data)
             {
                 DataRow row = dt.NewRow(); //创建一个DataRow实例
                 pList.ForEach(p => row[p.Name] = p.GetValue(item, null)); //给row 赋值
                 dt.Rows.Add(row); //加入到DataTable
             }
             #endregion
             #region 批量插入数据库 SqlBulkCopy声明及参数设置
             SqlBulkCopy bulk = new SqlBulkCopy(sqlconn, SqlBulkCopyOptions.UseInternalTransaction)   //, SqlBulkCopyOptions.UseInternalTransaction
             {
                 DestinationTableName = "Tongbu" /*设置数据库目标表名称*/
                 ,
                 BatchSize = dt.Rows.Count /*每一批次中的行数*/
             };

             bulk.ColumnMappings.Add("Id", "Id"); //设置数据源中的列和目标表中的列之间的映射关系
                                                  // bulk.ColumnMappings.Add("FlightId", "FlightId");//ColumnMappings.Add("源数据表列名称", "目标表数据列名称");
             bulk.ColumnMappings.Add("Name", "Name");
             bulk.ColumnMappings.Add("Age", "Age");

             //...
             #endregion
             bulk.WriteToServer(dt);
             if (bulk != null)
             {
                 bulk.Close();
             }
         }
         #endregion

调用：

  List<TestModel> T_list = new List<TestModel>();
            for (int i = ; i <= ; i++)
            {
                T_list.Add(new TestModel() { Name = "Test" + i, Age = i });
            }

            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();

            Sqlbulkcopy_Tran<TestModel>(T_list);

            Console.WriteLine(stopWatch.Elapsed);