如何从控制台应用(.Net内核)导出excel/pdf

using System;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;

class Program
{
    static void Main(string[] args)
    {
        // 创建Excel工作簿和工作表
        IWorkbook workbook = new XSSFWorkbook();
        ISheet sheet = workbook.CreateSheet("Sheet1");

        // 添加表头
        IRow headerRow = sheet.CreateRow(0);
        headerRow.CreateCell(0).SetCellValue("Name");
        headerRow.CreateCell(1).SetCellValue("Age");

        // 添加数据
        IRow dataRow = sheet.CreateRow(1);
        dataRow.CreateCell(0).SetCellValue("John");
        dataRow.CreateCell(1).SetCellValue(25);

        // 保存Excel文件
        using (FileStream fileStream = new FileStream("output.xlsx", FileMode.Create))
        {
            workbook.Write(fileStream);
        }

        Console.WriteLine("Excel文件导出成功！");
    }
}

using System;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

class Program
{
    static void Main(string[] args)
    {
        // 创建PDF文档
        Document document = new Document();

        // 创建PDF写入器
        PdfWriter writer = PdfWriter.GetInstance(document, new FileStream("output.pdf", FileMode.Create));

        // 打开PDF文档
        document.Open();

        // 添加内容
        document.Add(new Paragraph("Hello, World!"));

        // 关闭PDF文档
        document.Close();

        Console.WriteLine("PDF文件导出成功！");
    }
}