C# を使用して Datatable を CSV に変換する方法

using IronXL;

Imports IronXL

using IronXL;
using System;
using System.Data;

// Create a new DataTable object
DataTable table = new DataTable();

// Add a single column named "Example_DataSet" of type string
table.Columns.Add("Example_DataSet", typeof(string));

// Add rows to the DataTable
table.Rows.Add("0");
table.Rows.Add("1");
table.Rows.Add("2");
table.Rows.Add("3");
table.Rows.Add("1");
table.Rows.Add("2");
table.Rows.Add("3");

// Create a new Excel workbook and set its author metadata
WorkBook wb = WorkBook.Create(ExcelFileFormat.XLS);
wb.Metadata.Author = "OJ";

// Get the default worksheet
WorkSheet ws = wb.DefaultWorkSheet;

// Initialize rowCounter for Excel sheet rows
int rowCount = 1;

// Loop through each row in the DataTable and add the data to the Excel worksheet
foreach (DataRow row in table.Rows)
{
    // Populate worksheet cells with data from DataTable
    ws["A" + (rowCount)].Value = row[0].ToString();
    rowCount++;
}

// Save the workbook as a CSV file
wb.SaveAsCsv("Save_DataTable_CSV.csv", ";"); // Will be saved as: Save_DataTable_CSV.Sheet1.csv

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