.NET PowerPoint Library – Format PowerPoint Presentations in C#

using Syncfusion.Presentation;
//Load PowerPoint presentation
using FileStream inputStream = new("Template.pptx", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//Open an existing PowerPoint presentation
using IPresentation pptxDoc = Presentation.Open(inputStream);
//Retrieve the first slide from presentation
ISlide slide = pptxDoc.Slides[0];
//Retrieve the first shape
IShape shape = slide.Shapes[0] as IShape;
//Retrieve the first paragraph of the shape
IParagraph paragraph = shape.TextBody.Paragraphs[0];
//Set center alignment for the paragraph
paragraph.HorizontalAlignment = HorizontalAlignmentType.Center;
//Retrieve the first TextPart of the shape
ITextPart textPart = paragraph.TextParts[0];
//Set bold for the text
textPart.Font.Bold = true;
//Save the PowerPoint presentation
using FileStream outputStream = new("Result.pptx", FileMode.Create, FileAccess.ReadWrite);
pptxDoc.Save(outputStream);