MySqlBulkCopy 批量新增数据

MySqlConnector有个MySqlBulkCopy批量新增数据方法，不过只能用DataTable，需要把list转成DataTable代码如下：

MySqlBulkCopy mySqlBulkCopy = new MySqlBulkCopy(conn)
{
　　DestinationTableName = "userinfo"
};

mySqlBulkCopy.ColumnMappings.AddRange(table.Columns.Cast<DataColumn>().Select(colum => new MySqlBulkCopyColumnMapping { DestinationColumn = colum.ColumnName, SourceOrdinal = colum.Ordinal }).ToList());

mySqlBulkCopy.WriteToServer(table);