Hello,
Thanks for your inquiry.
Since you are using an older version, I suggest you download the latest
Free Spire.XLS for .NET Version:10.10 to test your case. Also, you can try our latest commercial version
Spire.XLS Pack(Hotfix) Version:10.10.6, which is more stable than the free version and contains more bug fixes.
If the issue still occurs after trying, please provide your source Excel file to help us analyze it further. You can upload it here or send it to us (
support@e-iceblue.com) via email. Thanks in advance.
Sincerely,
Rachel
E-iceblue support team