如何將我的串列放入 csv 檔案，然后從檔案中將資料讀回該串列？
這是我的清單：
List<Student> students = new List<Student>();
Student newstudent = new Student();
newstudent.studentID = txt_sID.Text;
newstudent.studentName = txt_sName.Text;
newstudent.studentAge = txt_sAge.Text;
students.Add(newstudent);
非常感謝您的時間。
uj5u.com熱心網友回復：
那么，你需要讀者和作家：
using System;
using System.Globalization;
using System.IO;
using CsvHelper;
using CsvHelper.Configuration;
var csvConfig = new CsvConfiguration(CultureInfo.CurrentCulture)
{
HasHeaderRecord = false,
Comment = '#',
AllowComments = true,
Delimiter = ";",
};
public void Reader()
{
using var streamReader = File.OpenText("students.csv");
using var csvReader = new CsvReader(streamReader, csvConfig);
List<Student> students = new List<Student>();
while (csvReader.Read())
{
var studentID = csvReader.GetField(0);
var studentName = csvReader.GetField(1);
var studentAge = csvReader.GetField(2);
Student newstudent = new();
newstudent.studentID = studentID ;
newstudent.studentName = studentName;
newstudent.studentAge = studentAge;
students.Add(newstudent);
}
}
pubnlic void Writer()
{
List<Student> students = new List<Student>();
Student newstudent = new();
newstudent.studentID = txt_sID.Text;
newstudent.studentName = txt_sName.Text;
newstudent.studentAge = txt_sAge.Text;
students.Add(newstudent);
using var streamWrit = new StreamWriter("students.csv");
using var csvWriter = new CsvWriter(streamWrit, csvConfig);
// if you want header
csvWriter.WriteHeader<Student>();
csvWriter.NextRecord();
csvWriter.WriteRecords(students);
}
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