Breaking News: Grepper is joining You.com. Read the official announcement!

Appending to an Existing CSV File with csvhelper

Andrew Perryman answered on May 9, 2022 Popularity 3/10 Helpfulness 1/10

answer Appending to an Existing CSV File with csvhelper

related Appending to an Existing CSV file

Appending to an Existing CSV File with csvhelper

Comment

void Main()
{
    var records = new List<Foo>
    {
        new Foo { Id = 1, Name = "one" },
    };

    // Write to a file.
    using (var writer = new StreamWriter("path\\to\\file.csv"))
    using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
    {
        csv.WriteRecords(records);
    }

    records = new List<Foo>
    {
        new Foo { Id = 2, Name = "two" },
    };

    // Append to the file.
    var config = new CsvConfiguration(CultureInfo.InvariantCulture)
    {
        // Don't write the header again.
        HasHeaderRecord = false,
    };
    using (var stream = File.Open("path\\to\\file.csv", FileMode.Append))
    using (var writer = new StreamWriter(stream))
    using (var csv = new CsvWriter(writer, config))
    {
        csv.WriteRecords(records);
    }
}

public class Foo
{
    public int Id { get; set; }
    public string Name { get; set; }
}

Popularity 3/10 Helpfulness 1/10 Language csharp

Source: joshclose.github.io

Tags: c# csv csvhelper file

Link to this answer
Share Copy Link

Contributed on May 09 2022

Andrew Perryman

0 Answers Avg Quality 2/10

Closely Related Answers

Appending to an Existing CSV file

Comment

import com.opencsv.CSVWriter;
import java.io.FileWriter;
import java.net.URL;

public class WritingCSVFileExample {

  public static void main(String[] args) throws Exception {
    URL fileUrl = WritingCSVFileExample.class.getClassLoader().getResource("data.csv");

    CSVWriter writer = new CSVWriter(new FileWriter(fileUrl.getFile(), true));

    //Create record
    String[] record = new String[]{"3","Rahul","Vaidya","India","35"};

    //Write the record to file
    writer.writeNext(record, false);

    //close the writer
    writer.close();
  }
}

Popularity 7/10 Helpfulness 1/10 Language java

Source: howtodoinjava.com

Tags: file java csv

Link to this answer
Share Copy Link

Contributed on Dec 30 2022

Deepika Sahu

0 Answers Avg Quality 2/10

Appending to an Existing CSV File with csvhelper

Contents

More Related Answers

Appending to an Existing CSV File with csvhelper

Closely Related Answers

Appending to an Existing CSV file

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.