如何打开、读取和关闭excel interop进程(C#)

using Excel = Microsoft.Office.Interop.Excel;

public void OpenReadCloseExcel()
{
    // 创建Excel应用程序对象
    Excel.Application excelApp = new Excel.Application();

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

    // 选择第一个工作表
    Excel.Worksheet worksheet = workbook.Sheets[1];

    // 读取数据
    Excel.Range range = worksheet.UsedRange;
    int rowCount = range.Rows.Count;
    int columnCount = range.Columns.Count;

    for (int i = 1; i <= rowCount; i++)
    {
        for (int j = 1; j <= columnCount; j++)
        {
            // 读取单元格的值
            string cellValue = range.Cells[i, j].Value.ToString();
            Console.WriteLine(cellValue);
        }
    }

    // 关闭Excel文件
    workbook.Close();

    // 退出Excel应用程序
    excelApp.Quit();

    // 释放COM对象
    System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
    System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
    System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);

    // 清空垃圾回收器
    GC.Collect();
}