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

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
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 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,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);
- }
5. EPPLUS,暂时不做介绍。
原文链接:http://www.cnblogs.com/kenjiang/p/10790652.html