Do we need to explicitly call dispose method post save once everything with the workbook is done?
Is this applicable for all Excel, PDF, Doc, and PPT formats?
What if there are other operations happening on the workbook post the save method is called.
Aspose.Cells for .NET does not necessarily require to free up the resources for the processes as the component is already optimized to do so automatically. Aspose.Cells is created in managed C# and is a pure .NET component, we do not use un-managed code. When objects are no more useful in the processes, GC would collect and release the memory occupied by the objects. Being a pure .NET component, Aspose.Cells for .NET relies on .NET garbage collector (GC) to allocate and free the memory for the different processes, although you may try to also use GC.Collect() or try Workbook.Dispose() and set Workbook to null in some cases for your need. Moreover, if you are using Stream objects, you need to call Close() and Flush() methods to manually release the resources for the objects when they are not used any longer.
Regarding other APIs, e.g., Aspose.Words, Aspose.PDF, Aspose.Slides, etc., please post your queries in respective forums.