Hi Mike,

There is a worksheet.rows.count property but it is private. It is possible to get the count value using reflection like that :

 WorksheetRowCollection wk = (WorksheetRowCollection)worksheet.Rows;                
PropertyInfo propInfox = wk.GetType().BaseType.GetProperty("Count", BindingFlags.NonPublic | BindingFlags.Instance);
int rowIndex = (int)propInfox.GetValue(wk, null);

I hoped that there was a better solution to get this value like a count public property.

Have you tried worksheet.Rows.Count?

I may be wrong and there might not be a Count property on the Rows collection.

If that's the case, then I think you would have to loop through the Rows collection and count them.I'm pretty sure this will work.

int rowCount = 0;

foreach (WorksheetRow row in worksheet.Rows)
            {
                  rowCount++;
            }

Hi Mike,

In fact i want to load an existing workseet using  Workbook.Load and find the last row used on it.

if (File.Exists(xlsFile)) workBook = Workbook.Load(xlsFile);
else workBook = new Workbook();

if (workBook.Worksheets.Exists(worksheetName))
worksheet = workBook.Worksheets[worksheetName];

Now i just want to append some rows at the end of the worksheet

i don't know how to find the last row index used in the worksheet.

.