C# NPOI如何获取小区地址("A1"，"CY100"，...)起始单元格的值

using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;

string filePath = "path/to/your/excel/file.xlsx";
IWorkbook workbook;
using (FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
    workbook = new XSSFWorkbook(file);
}

ISheet sheet = workbook.GetSheetAt(0); // 假设要操作的是第一个工作表

string startCellReference = "A1"; // 起始单元格的引用
IRow startRow = sheet.GetRow(sheet.FirstRowNum); // 获取起始行
ICell startCell = startRow.GetCell(CellReference.ConvertColStringToIndex(startCellReference)); // 获取起始单元格
string startCellValue = startCell.StringCellValue; // 获取起始单元格的值

string startCellReference = "A1"; // 起始单元格的引用
string endCellReference = "CY100"; // 结束单元格的引用
CellReference startCellRef = new CellReference(startCellReference);
CellReference endCellRef = new CellReference(endCellReference);

for (int row = startCellRef.Row; row <= endCellRef.Row; row++)
{
    IRow currentRow = sheet.GetRow(row);
    for (int col = startCellRef.Col; col <= endCellRef.Col; col++)
    {
        ICell currentCell = currentRow.GetCell(col);
        string cellValue = currentCell.StringCellValue;
        // 处理单元格的值
    }
}