Add, Extract, Remove VBA Macros in PowerPoint using C#

add-vba-macro-in-powerpoint.cs

// Load presentation
using (Presentation presentation = new Presentation("presentation.pptm"))
{
    // Create new VBA Project
    presentation.VbaProject = new VbaProject();

    // Add empty module to the VBA project
    IVbaModule module = presentation.VbaProject.Modules.AddEmptyModule("Module");
  
    // Set module's source code
    module.SourceCode = @"Sub Test(oShape As Shape) MsgBox ""Test"" End Sub";

    // Create reference to <stdole>
    VbaReferenceOleTypeLib stdoleReference =
        new VbaReferenceOleTypeLib("stdole", "*\\G{00020430-0000-0000-C000-000000000046}#2.0#0#C:\\Windows\\system32\\stdole2.tlb#OLE Automation");

    // Create reference to Office
    VbaReferenceOleTypeLib officeReference =
        new VbaReferenceOleTypeLib("Office", "*\\G{2DF8D04C-5BFA-101B-BDE5-00AA0044DE52}#2.0#0#C:\\Program Files\\Common Files\\Microsoft Shared\\OFFICE14\\MSO.DLL#Microsoft Office 14.0 Object Library");

    // Add references to the VBA project
    presentation.VbaProject.References.Add(stdoleReference);
    presentation.VbaProject.References.Add(officeReference);
    
    // Save Presentation
    presentation.Save("AddVBAMacros.pptm", SaveFormat.Pptm);
}

extract-vba-macro-in-powerpoint.cs

// Load presentation
using (Presentation pres = new Presentation("presentation.pptm"))
{
	if (pres.VbaProject != null) // check if Presentation contains VBA Project
	{
		foreach (IVbaModule module in pres.VbaProject.Modules)
		{
			Console.WriteLine(module.Name);
			Console.WriteLine(module.SourceCode);
		}
	}
}

remove-vba-macro-in-powerpoint.cs

// Load presentation
using (Presentation presentation = new Presentation("Presentation.pptm"))
{
    // Remove the VBA module
    presentation.VbaProject.Modules.Remove(presentation.VbaProject.Modules[0]);

    // Save presentation
    presentation.Save("RemovedVBAMacros.pptm", SaveFormat.Pptm);
}