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If you created a pretty Excel table and now want to publish it online as a web page, the simplest way is to export it to an old good HTML file. This sample is aimed to deliver a C# solution to convert Excel to HTML with its original layout.
Since Microsoft has released its 2007 office pack, compatibility matters between old versions’ files and 2007 programs has been reported. This sample focuses on delivering a solution to convert Excel files from XLS to XLSX or from XLSX to XLS via a .NET Eexcl component-Spire.XLS.
This sample shows how to convert image  to PDF using a free .NET PDF component in C#.
Besides using OpenXML
to create comments on PowerPoint slides, we can also utilize 3rd-party library to accomplish this task. This sample shows how to use the classes in the Spire.Presentation 2.0 to  add a comment on a PowerPoint slide programmatically
using C#.
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