bcp和SqlDataAdapter进行批量跟新插入方法

/// <summary> /// 大批量插入数据(2000每批次) /// 已采用整体事物控制 /// </summary> /// <param name="connString">数据库链接字符串</param> /// <param name="tableName">数据库服务器上目标表名</param> /// <param name="dt">含有和目标数据库表结构完全一致(所包含的字段名完全一致即可)的DataTable</param> public static void BulkCopy( string connString, string tableName, DataTable dt) { using (SqlConnection conn = new SqlConnection(connString)) { conn.Open(); using (SqlTransaction transaction = conn.BeginTransaction()) { using (SqlBulkCopy bulkCopy = new SqlBulkCopy(conn, SqlBulkCopyOptions.Default, transaction)) { bulkCopy.BatchSize = 2000; bulkCopy.BulkCopyTimeout = _CommandTimeOut; bulkCopy.DestinationTableName = tableName; try { foreach (DataColumn col in dt.Columns) { bulkCopy.ColumnMappings.Add(col.ColumnName, col.ColumnName); } bulkCopy.WriteToServer(dt); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); throw ex; } finally { conn.Close(); } } } } }

 

/// <summary>
/// 批量更新数据(每批次5000)
/// </summary>
/// <param name="connString">数据库链接字符串</param>
/// <param name="table"></param>
public static void Update( string connString, DataTable table)
{
   SqlConnection conn = new SqlConnection(connString);
   SqlCommand comm = conn.CreateCommand();
   comm.CommandTimeout = _CommandTimeOut;
   comm.CommandType = CommandType.Text;
   SqlDataAdapter adapter = new SqlDataAdapter(comm);
   SqlCommandBuilder commandBulider = new SqlCommandBuilder(adapter);
   commandBulider.ConflictOption = ConflictOption.OverwriteChanges;
   try
   {
   conn.Open();
   //设置批量更新的每次处理条数
   adapter.UpdateBatchSize = 5000;
   adapter.SelectCommand.Transaction = conn.BeginTransaction(); /////////////////开始事务
   if (table.ExtendedProperties[ "SQL" ] != null )
   {
       adapter.SelectCommand.CommandText = table.ExtendedProperties[ "SQL" ].ToString();
   }
   adapter.Update(table);
   adapter.SelectCommand.Transaction.Commit(); /////提交事务
   }
   catch (Exception ex)
   {
   if (adapter.SelectCommand != null && adapter.SelectCommand.Transaction != null )
   {
       adapter.SelectCommand.Transaction.Rollback();
   }
   throw ex;
   }
   finally
   {
   conn.Close();
   conn.Dispose();
   }
}