使用C#和ASP.NET将单个单元格从Excel读取为字符串

using Microsoft.Office.Interop.Excel;

// 创建Excel应用程序对象
Application excelApp = new Application();

// 打开Excel文件
Workbook workbook = excelApp.Workbooks.Open("路径/文件名.xlsx");

// 获取第一个工作表
Worksheet worksheet = workbook.Sheets[1];

// 获取要读取的单元格
Range cell = worksheet.Cells[row, column];

// 读取单元格的值
string cellValue = cell.Value.ToString();

// 关闭Excel文件
workbook.Close();

// 释放Excel应用程序对象
excelApp.Quit();

// 释放资源
System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);