<pre data-code-wrap="csharp"><code class="lang-csharp">using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using (FileStream file = new FileStream("fichier.xlsx", FileMode.Open, FileAccess.Read))
{
IWorkbook workbook = new XSSFWorkbook(file);
ISheet sheet = workbook.GetSheetAt(0);
for (int i = 0; i <= sheet.LastRowNum; i++)
{
IRow row = sheet.GetRow(i);
if (row != null)
{
string val = row.GetCell(0)?.ToString();
}
}
}
</code></pre>
<p>Pour les fichiers .xls, utilisez <code>HSSFWorkbook</code> au lieu de <code>XSSFWorkbook</code>.</p>
