NPOI technology,

Using (FileStream stream = new FileStream ("C: \ Users \ XXXXXX \ Desktop \ 1.xls", FileMode. Open ))
{
HSSFWorkbook workbook = new HSSFWorkbook (stream );
HSSWSheet sheet = workbook. GetSheetAt (0 );
HSSFRow row = sheet. GetRow (0 );
HSSFCell cell = row. GetCell (0 );
MessageBox. Show (cell. stringcellvalue );

}
Npoitechnology is generally used in the officeof version 03, and the 07 class is ended with .xlsx, all of which are in the xaml code. You can change the format of an execel table to zip, and then exe can see The xaml content.