Hi Matthew,
You can use IsColumnVisible and IsRowVisible property to detect if a row/column was hidden. Please refer the following code snippet which illustrates the above:
[C#]
bool column = sheet.IsColumnVisible(1);
bool row = sheet.IsRowVisible(1);
MessageBox.Show(column.ToString(),"Hidden or not");
Please refer the following sample which implements the above said feature:
Hide.zipKindly take a look at the sample above and let me know if you have any other questions.
Thanks,
Melba