I have a problem when trying to insert a `.csv` file using bulk insert into SQL Server.

Csv file example rows at below:

```
16777216,16777471,AU,AUSTRALIA,APNIC DEBOGON PROJECT
16777472,16778239,CN,CHINA,CHINANET FUJIAN PROVINCE NETWORK
16778240,16779263,AU,AUSTRALIA,LEVEL 5 530 COLLINS STREET

```

This is my code:

```
CsvReader csv = new CsvReader(new StreamReader(fileName), false, ',', '\0', '\0', '\0', LumenWorks.Framework.IO.Csv.ValueTrimmingOptions.All);

csv.DefaultParseErrorAction = ParseErrorAction.AdvanceToNextLine;
csv.MissingFieldAction = MissingFieldAction.ReplaceByNull;

copy = new SqlBulkCopy(conn, SqlBulkCopyOptions.KeepIdentity, transaction);
copy.DestinationTableName = "Blabla";

var mapping1 = new SqlBulkCopyColumnMapping(0, "ipFrom");
copy.ColumnMappings.Add(mapping1);

var mapping2 = new SqlBulkCopyColumnMapping(1, "ipTo");
copy.ColumnMappings.Add(mapping2);

var mapping3 = new SqlBulkCopyColumnMapping(2, "countryCode");
copy.ColumnMappings.Add(mapping3);

var mapping4 = new SqlBulkCopyColumnMapping(3, "countryName");
copy.ColumnMappings.Add(mapping4);

var mapping5 = new SqlBulkCopyColumnMapping(4, "isp");
copy.ColumnMappings.Add(mapping5);

copy.WriteToServer(csv);
transaction.Commit();

```

Result table is:

> 
> "16777216 16777471 AU AUSTRALIA APNIC DEBOGON PROJECT" "16777472 16778239 CN CHINA CHINANET FUJIAN PROVINCE NETWORK" "16778240 16779263 AU AUSTRALIA LEVEL 5 530 COLLINS STREET"
> 
> 
> 

I can't handle this file line by line because file has approximately 100 million lines

How can I discard at the end and start double quotes?