C#でCSVファイルに書き込む方法

using IronXL; 
using System.Linq;

// This is the main class where execution starts.
public class Program {
    static void Main() {
        // Main method where all logic is executed
    }
}

Imports IronXL
Imports System.Linq

' This is the main class where execution starts.
Public Class Program
	Shared Sub Main()
		' Main method where all logic is executed
	End Sub
End Class

// Create a new workbook. This serves as the container for all worksheets.
WorkBook workBook = WorkBook.Create();

// Create a new worksheet within the workbook named "Receipt".
WorkSheet workSheet = workBook.CreateWorkSheet("Receipt");

' Create a new workbook. This serves as the container for all worksheets.
Dim workBook As WorkBook = WorkBook.Create()

' Create a new worksheet within the workbook named "Receipt".
Dim workSheet As WorkSheet = workBook.CreateWorkSheet("Receipt")

// Set the header row for columns. Headers added for better understanding of data.
workSheet["A1"].Value = "Product"; 
workSheet["B1"].Value = "Price";

' Set the header row for columns. Headers added for better understanding of data.
workSheet("A1").Value = "Product"
workSheet("B1").Value = "Price"

// Populate worksheet with product data and their respective prices.
workSheet["A2"].Value = "Item 1"; 
workSheet["B2"].DoubleValue = 20.10; 

workSheet["A3"].Value = "Item 2"; 
workSheet["B3"].DoubleValue = 15.50; 

workSheet["A4"].Value = "Item 3"; 
workSheet["B4"].DoubleValue = 10.25;

' Populate worksheet with product data and their respective prices.
workSheet("A2").Value = "Item 1"
workSheet("B2").DoubleValue = 20.10

workSheet("A3").Value = "Item 2"
workSheet("B3").DoubleValue = 15.50

workSheet("A4").Value = "Item 3"
workSheet("B4").DoubleValue = 10.25

// Define the range for price values to be summed.
var range = workSheet["B2:B4"];

// Calculate the sum of prices.
decimal sum = range.Sum();

' Define the range for price values to be summed.
Dim range = workSheet("B2:B4")

' Calculate the sum of prices.
Dim sum As Decimal = range.Sum()

// Display the sum in the console.
System.Console.WriteLine(sum);

// Update the total price in the worksheet.
workSheet["B5"].Value = sum;

' Display the sum in the console.
System.Console.WriteLine(sum)

' Update the total price in the worksheet.
workSheet("B5").Value = sum

// Save the workbook as a CSV file named "receipt.csv".
workBook.SaveAs("receipt.csv");

' Save the workbook as a CSV file named "receipt.csv".
workBook.SaveAs("receipt.csv")