public static string[] GetAllTextInSlide(DocumentFormat.OpenXml.Packaging.PresentationDocument presentationDocument, int slideIndex)
{
// Verify that the presentation document exists.
if (presentationDocument == null)
{
throw new System.ArgumentNullException("presentationDocument");
}
// Verify that the slide index is not out of range.
if (slideIndex < 0)
{
throw new System.ArgumentOutOfRangeException("slideIndex");
}
// Get the presentation part of the presentation document.
DocumentFormat.OpenXml.Packaging.PresentationPart presentationPart = presentationDocument.PresentationPart;
// Verify that the presentation part and presentation exist.
if (presentationPart != null && presentationPart.Presentation != null)
{
// Get the Presentation object from the presentation part.
DocumentFormat.OpenXml.Presentation.Presentation presentation = presentationPart.Presentation;
// Verify that the slide ID list exists.
if (presentation.SlideIdList != null)
{
// Get the collection of slide IDs from the slide ID list.
DocumentFormat.OpenXml.OpenXmlElementList slideIds =
presentation.SlideIdList.ChildElements;
// If the slide ID is in range...
if (slideIndex < slideIds.Count)
{
// Get the relationship ID of the slide.
string slidePartRelationshipId = (slideIds[slideIndex] as DocumentFormat.OpenXml.Presentation.SlideId).RelationshipId;
// Get the specified slide part from the relationship ID.
DocumentFormat.OpenXml.Packaging.SlidePart slidePart =
(DocumentFormat.OpenXml.Packaging.SlidePart)presentationPart.GetPartById(slidePartRelationshipId);
// Pass the slide part to the next method, and
// then return the array of strings that method
// returns to the previous method.
return(GetAllTextInSlide(slidePart));
}
}
}
// Else, return null.
return(null);
}
// Get a list of the titles of all the slides in the presentation.
public static System.Collections.Generic.IList <string> GetSlideTitles(DocumentFormat.OpenXml.Packaging.PresentationDocument presentationDocument)
{
if (presentationDocument == null)
{
throw new System.ArgumentNullException("presentationDocument");
}
// Get a PresentationPart object from the PresentationDocument object.
DocumentFormat.OpenXml.Packaging.PresentationPart presentationPart = presentationDocument.PresentationPart;
if (presentationPart != null &&
presentationPart.Presentation != null)
{
// Get a Presentation object from the PresentationPart object.
DocumentFormat.OpenXml.Presentation.Presentation presentation = presentationPart.Presentation;
if (presentation.SlideIdList != null)
{
System.Collections.Generic.List <string> titlesList = new System.Collections.Generic.List <string>();
// Get the title of each slide in the slide order.
foreach (var slideId in presentation.SlideIdList.Elements <DocumentFormat.OpenXml.Presentation.SlideId>())
{
DocumentFormat.OpenXml.Packaging.SlidePart slidePart = presentationPart.GetPartById(slideId.RelationshipId) as DocumentFormat.OpenXml.Packaging.SlidePart;
// Get the slide title.
string title = GetSlideTitle(slidePart);
// An empty title can also be added.
titlesList.Add(title);
}
return(titlesList);
}
}
return(null);
}