杰人编程网

1 使用Office自带的库

前提是本机须安装office才能运行，且不同的office版本之间可能会有兼容问题，从Nuget下载
Microsoft.Office.Interop.Excel

在这里插入图片描述

读写代码如下：

using Microsoft.Office.Interop.Excel;

using Excel = Microsoft.Office.Interop.Excel;

private void btn_Office_Click(object sender, EventArgs e)

{

string importExcelPath = "E:\\import.xlsx";

string exportExcelPath = "E:\\export.xlsx";

//创建

Excel.Application xlApp = new Excel.Application();

xlApp.DisplayAlerts = false;

xlApp.Visible = false;

xlApp.ScreenUpdating = false;

//打开Excel

Excel.Workbook xlsWorkBook = xlApp.Workbooks.Open(importExcelPath, System.Type.Missing, System.Type.Missing, System.Type.Missing,

System.Type.Missing, System.Type.Missing, System.Type.Missing, System.Type.Missing, System.Type.Missing, System.Type.Missing, System.Type.Missing,

System.Type.Missing, System.Type.Missing, System.Type.Missing, System.Type.Missing);

//处理数据过程，更多操作方法自行百度Excel.Worksheet sheet = xlsWorkBook.Worksheets[1];//工作薄从1开始，不是0

sheet.Cells[1, 1] = "test"; //另存

xlsWorkBook.SaveAs(exportExcelPath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, XlSaveAsAccessMode.xlNoChange,

Type.Missing,

Type.Missing,

Type.Missing,

Type.Missing,

Type.Missing);

//关闭Excel进程

ClosePro(xlApp, xlsWorkBook);

}

public void ClosePro(Excel.Application xlApp, Excel.Workbook xlsWorkBook)

{

if (xlsWorkBook != null)

xlsWorkBook.Close(true, Type.Missing, Type.Missing);

xlApp.Quit();

// 安全回收进程

System.GC.GetGeneration(xlApp);

IntPtr t = new IntPtr(xlApp.Hwnd); //获取句柄

int k = 0;

GetWindowThreadProcessId(t, out k); //获取进程唯一标志

System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(k);

p.Kill(); //关闭进程

}

2. 使用NPOI

地址：
https://github.com/tonyqus/npoi

在不安装office的时候也是可以读写的，速度很快，从Nuget下载 NPOI

读写代码如下：

using System.IO;

using NPOI;

using NPOI.SS.UserModel;

private void btn_NPOI_Click(object sender, EventArgs e)

{

string importExcelPath = "E:\\import.xlsx";

string exportExcelPath = "E:\\export.xlsx";

IWorkbook workbook = WorkbookFactory.Create(importExcelPath);

ISheet sheet = workbook.GetSheetAt(0);//获取第一个工作薄

IRow row = (IRow)sheet.GetRow(0);//获取第一行

//设置第一行第一列值,更多方法请参考源官方Demo

row.CreateCell(0).SetCellValue("test");//设置第一行第一列值

//导出excel

FileStream fs = new FileStream(exportExcelPath, FileMode.Create, FileAccess.ReadWrite);

workbook.Write(fs);

fs.Close();

}

3. 使用ClosedXml

地址：
https://github.com/ClosedXML/ClosedXML

从Nuget下载 ClosedXml

读写代码如下：

using ClosedXML;

using ClosedXML.Excel;

private void btn_ClosedXML_Click(object sender, EventArgs e)

{

string importExcelPath = "E:\\import.xlsx";

string exportExcelPath = "E:\\export.xlsx";

var workbook = new XLWorkbook(importExcelPath);

IXLWorksheet sheet = workbook.Worksheet(1);//这个库也是从1开始

//设置第一行第一列值,更多方法请参考官方Demo

sheet.Cell(1, 1).Value = "test";//该方法也是从1开始，非0

workbook.SaveAs(exportExcelPath);

}

4. 使用 spire.xls

地址：
https://www.e-iceblue.com/Introduce/free-xls-component.html

spire分免费和收费，无特殊需求用免费即可

从Nuget下载 Free Spire.xls For .NET

读写代码如下：

using Spire.Xls;

private void btnSpire_Click(object sender, EventArgs e)

{

string importExcelPath = "E:\\import.xlsx";

string exportExcelPath = "E:\\export.xlsx";

Spire.Xls.Workbook workbook = new Spire.Xls.Workbook();

workbook.LoadFromFile(importExcelPath);

//处理Excel数据，更多请参考官方Demo

Spire.Xls.Worksheet sheet = workbook.Worksheets[0];

sheet.Range[1,1].Text = "test";//该方法也是从1开始，非0

workbook.SaveToFile(exportExcelPath);

}

EPPLUS地址：
https://github.com/pruiz/EPPlus/tree/master/EPPlus