Spire.XLS is a professional Excel API that enables developers to create, manage, manipulate, convert and print Excel worksheets. Get free and professional technical support for Spire.XLS for .NET, Java, Android, C++, Python.
Thanks for your inquiry. Please refer to the following code and download the latest Spire.XLS Pack(Hotfix) Version:10.4.9 for testing. If there is any misunderstanding or you encounter any problems during testing, please share your input file with us, then we will do further investigation.