[C#/COMMON/CSVHELPER/.NET6] CsvWriter 클래스 : WriteRecords 메소드를 사용해 CSV 파일에 데이터 추가하기

■ CsvWriter 클래스의 WriteRecords 메소드를 사용해 CSV 파일에 데이터를 추가하는 방법을 보여준다.

▶ Student.cs


using CsvHelper.Configuration.Attributes;

namespace TestProject;

/// <summary>
/// 학생
/// </summary>
public class Student
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Property
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region ID - ID

    /// <summary>
    /// ID
    /// </summary>
    [Name("ID")]
    public string ID { get; set; }

    #endregion
    #region 성명 - Name

    /// <summary>
    /// 성명
    /// </summary>
    [Name("성명")]
    public string Name { get; set; }

    #endregion
    #region 점수 - Score

    /// <summary>
    /// 점수
    /// </summary>
    [Name("점수")]
    public int Score { get; set; }

    #endregion
}

using CsvHelper.Configuration.Attributes;

namespace TestProject;

/// <summary>

/// 학생

/// </summary>

public class Student

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Property

////////////////////////////////////////////////////////////////////////////////////////// Public

#region ID - ID

/// <summary>

/// ID

/// </summary>

[Name("ID")]

public string ID { get; set; }

#endregion

#region 성명 - Name

/// <summary>

/// 성명

/// </summary>

[Name("성명")]

public string Name { get; set; }

#endregion

#region 점수 - Score

/// <summary>

/// 점수

/// </summary>

[Name("점수")]

public int Score { get; set; }

#endregion

}

▶ Program.cs


using System.Globalization;

using CsvHelper;
using CsvHelper.Configuration;

namespace TestProject;

/// <summary>
/// 프로그램
/// </summary>
class Program
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Static
    //////////////////////////////////////////////////////////////////////////////// Private

    #region 프로그램 시작하기 - Main()

    /// <summary>
    /// 프로그램 시작하기
    /// </summary>
    private static void Main()
    {
        List<Student> sourceList = new List<Student>
        {
            new Student { ID = "ID004", Name = "김동수", Score = 80 }
        };

        CsvConfiguration csvConfiguration = new CsvConfiguration(CultureInfo.InvariantCulture);

        csvConfiguration.HasHeaderRecord = false;

        using(FileStream fileStream = File.Open("source.csv", FileMode.Append))
        {
            using(StreamWriter streamWriter = new StreamWriter(fileStream))
            {
                using(CsvWriter csvWriter = new CsvWriter(streamWriter, csvConfiguration))
                {
                    csvWriter.WriteRecords(sourceList);
                }
            }
        }
    }

    #endregion
}

using System.Globalization;

using CsvHelper;

using CsvHelper.Configuration;

namespace TestProject;

/// <summary>

/// 프로그램

/// </summary>

class Program

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Static

//////////////////////////////////////////////////////////////////////////////// Private

#region 프로그램 시작하기 - Main()

/// <summary>

/// 프로그램 시작하기

/// </summary>

private static void Main()

{

List<Student> sourceList = new List<Student>

{

new Student { ID = "ID004", Name = "김동수", Score = 80 }

};

CsvConfiguration csvConfiguration = new CsvConfiguration(CultureInfo.InvariantCulture);

csvConfiguration.HasHeaderRecord = false;

using(FileStream fileStream = File.Open("source.csv", FileMode.Append))

{

using(StreamWriter streamWriter = new StreamWriter(fileStream))

{

using(CsvWriter csvWriter = new CsvWriter(streamWriter, csvConfiguration))

{

csvWriter.WriteRecords(sourceList);

}

#endregion

}

TestProject.zip