Best Way to Integrate PowerPoint or Slide Show Viewer in C#

Question

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In last week, I wanted to make a presentation viewer(Slide show) using C#.
I went through MS-PowerPoint and its done but licensed(So not of my use).
MS-PowerPoint Viewer(No support in C#).
Then LibreOffice and OpenOfficeOrg- Too much complicated to use, having errors in libraries.
So what may be the best way to implement a presentation controller in my form.
I can use C# or C++.

Please suggest your opinions.
Thanks!