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Appending to an Existing CSV file

Deepika Sahu answered on May 9, 2022 Popularity 7/10 Helpfulness 1/10

answer Appending to an Existing CSV file

related Appending to an Existing CSV File with csvhelper

Appending to an Existing CSV file

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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: csv file java

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Contributed on Dec 30 2022

Deepika Sahu

0 Answers Avg Quality 2/10

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Appending to an Existing CSV File with csvhelper

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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 4/10 Helpfulness 1/10 Language csharp

Source: joshclose.github.io

Tags: csvhelper c# csv file

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Contributed on May 09 2022

Andrew Perryman

0 Answers Avg Quality 2/10

Appending to an Existing CSV file

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Appending to an Existing CSV file

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Appending to an Existing CSV File with csvhelper

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