Редактировать PPT в C# .NET

// Load the PPT file into Editor with the optional PresentationLoadOptions
Editor editor = new Editor("source.ppt", delegate { return new PresentationLoadOptions(); });

// Create and adjust the edit options
PresentationEditOptions editOptions = new PresentationEditOptions();
editOptions.SlideNumber = 1;//select a slide to edit

// Open input PPT document for edit — obtain an intermediate document, that can be edited
EditableDocument beforeEdit = editor.Edit(editOptions);

// Grab PPT document content and associated resources from editable document
string content = beforeEdit.GetEmbeddedHtml();

// Send the content to WYSIWYG-editor, edit it there, and send edited content back to the server-side
// This step simulates a such operation
string updatedContent = content.Replace("Title", "Edited Title");

// Grab edited content and resources from WYSIWYG-editor and create a new EditableDocument instance from it
EditableDocument afterEdit = EditableDocument.FromMarkup(updatedContent, null);

// Create a save options and select a desired output format
PresentationSaveOptions saveOptions = new PresentationSaveOptions(Formats.PresentationFormats.Ppt);

// Save edited PPT document to the file
editor.Save(afterEdit, "edited.ppt", saveOptions);