c# 导出Excel文件的几种方式 简单试验

1.概要

生成excel文件并保存

2.运行结果

2.1 生成文件

2.2 生成的内容 

3.试验

3.1 试验1：使用 Microsoft Office Interop Excel 组件导出 Excel 文件（需要安装 Microsoft Excel 或者 Microsoft Office 套件）

using System;
using System.Data;
using System.IO;
using Microsoft.Office.Interop.Excel;
 
namespace ExcelOffice
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Excel试验-ClosedXML");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            test();
        }
        private void test()
        {
            // 创建一个 DataTable 对象来存储数据
            System.Data.DataTable dataTable = new System.Data.DataTable("MyData");
            // 添加列到 DataTable
            dataTable.Columns.Add("Name", typeof(string));
            dataTable.Columns.Add("Age", typeof(int));
            // 向 DataTable 中添加数据行
            dataTable.Rows.Add("张三", 30);
            dataTable.Rows.Add("李四", 25);
 
            // 使用 Microsoft Office Interop Excel 组件导出 Excel 文件
            Application excelApp = new Application();
            Workbook workbook = excelApp.Workbooks.Add();
            //Workbook workbook = excelApp.Workbooks.Add(null);
            //Workbook workbook = excelApp.Workbooks[0];
            Worksheet worksheet = (Worksheet)workbook.Worksheets[1];
            int row = 1;
            foreach (DataRow dataRow in dataTable.Rows)
            {
                worksheet.Cells[row, 1] = dataRow["Name"].ToString();
                worksheet.Cells[row, 2] = dataRow["Age"];
                row++;
            }
            // 将 Excel 文件保存到磁盘
            string fileName = @"MyExcelFile.xlsx";
            workbook.SaveAs(fileName);
            // 关闭 Excel 应用程序和工作簿对象，并释放资源
            workbook.Close();
            excelApp.Quit();
            System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
 
        }
    }
}

3.2 试验2-NPOI

using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System;
using System.Data;
using System.IO;
 
namespace Excel试验
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Excel试验-NPOI");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            test();
        }
        private void test()
        {
            // 创建一个 DataTable 对象来存储数据
            DataTable dataTable = new DataTable("MyData");
            // 添加列到 DataTable
            dataTable.Columns.Add("Name", typeof(string));
            dataTable.Columns.Add("Age", typeof(int));
            // 向 DataTable 中添加数据行
            dataTable.Rows.Add("张三", 30);
            dataTable.Rows.Add("李四", 25);
 
            IWorkbook workbook = new HSSFWorkbook();
            ISheet worksheet = workbook.CreateSheet("Sheet1");
 
            int row = 0;
            foreach (DataRow dataRow in dataTable.Rows)
            {
                IRow newRow = worksheet.CreateRow(row);
                newRow.CreateCell(0).SetCellValue(dataRow["Name"].ToString());
                newRow.CreateCell(1).SetCellValue(Convert.ToInt32(dataRow["Age"]));
                row++;
            }
 
            // 将 Excel 文件保存到磁盘
            string fileName = @"MyExcelFile.xls";
            using (FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
            {
                workbook.Write(fs);
            }
            // 释放资源
            workbook.Dispose();
        }
    }
}

3.3 试验3 EPPlus

using OfficeOpenXml;
using System;
using System.Data;
using System.IO;
 
namespace ExcelEPPlus
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Excel试验-EPPlus");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            test();
        }
        private void test()
        {
            // 创建一个 DataTable 对象来存储数据
            DataTable dataTable = new DataTable("MyData");
            // 添加列到 DataTable
            dataTable.Columns.Add("Name", typeof(string));
            dataTable.Columns.Add("Age", typeof(int));
            // 向 DataTable 中添加数据行
            dataTable.Rows.Add("张三", 30);
            dataTable.Rows.Add("李四", 25);
            ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
            // 使用 EPPlus 组件导出 Excel 文件
            using (ExcelPackage excelPackage = new ExcelPackage())
            {
                ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet1");
                int row = 1;
                foreach (DataRow dataRow in dataTable.Rows)
                {
                    worksheet.Cells[row, 1].Value = dataRow["Name"].ToString();
                    worksheet.Cells[row, 2].Value = Convert.ToInt32(dataRow["Age"]);
                    row++;
                }
                // 将 Excel 文件保存到磁盘
                string fileName = @"MyExcelFile.xlsx";
                FileInfo fileInfo = new FileInfo(fileName);
                excelPackage.SaveAs(fileInfo);
            }
        }
    }
}

3.4 试验3 ClosedXML

using ClosedXML.Excel;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace ExcelClosedXML
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Excel试验-ClosedXML");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            test();
        }
        private void test()
        {
            // 创建一个 DataTable 对象来存储数据
            DataTable dataTable = new DataTable("MyData");
            // 添加列到 DataTable
            dataTable.Columns.Add("Name", typeof(string));
            dataTable.Columns.Add("Age", typeof(int));
            // 向 DataTable 中添加数据行
            dataTable.Rows.Add("张三", 30);
            dataTable.Rows.Add("李四", 25);
 
            // 使用 ClosedXML 组件导出 Excel 文件
            using (XLWorkbook workbook = new XLWorkbook())
            {
                IXLWorksheet worksheet = workbook.AddWorksheet("MySheet");
                int row = 1;
                foreach (DataRow dataRow in dataTable.Rows)
                {
                    worksheet.Cell(row, 1).Value = dataRow["Name"].ToString();
                    worksheet.Cell(row, 2).Value = Convert.ToInt32(dataRow["Age"]);
                    // 设置单元格样式
                    worksheet.Cell(row, 2).Style.Font.Bold = true;
                    worksheet.Cell(row, 2).Style.Alignment.Horizontal = XLAlignmentHorizontalValues.Right;
                    row++;
                }
                // 将 Excel 文件保存到磁盘
                string fileName = @"MyExcelFile.xlsx";
                workbook.SaveAs(fileName);
            }
        }
    }
}