public static void GetSlideIdAndText(out string sldText, string docName, int index)
{
using (DocumentFormat.OpenXml.Packaging.PresentationDocument ppt = DocumentFormat.OpenXml.Packaging.PresentationDocument.Open(docName, false))
{
// Get the relationship ID of the first slide.
DocumentFormat.OpenXml.Packaging.PresentationPart part = ppt.PresentationPart;
DocumentFormat.OpenXml.OpenXmlElementList slideIds = part.Presentation.SlideIdList.ChildElements;
string relId = (slideIds[index] as DocumentFormat.OpenXml.Presentation.SlideId).RelationshipId;
// Get the slide part from the relationship ID.
DocumentFormat.OpenXml.Packaging.SlidePart slide = (DocumentFormat.OpenXml.Packaging.SlidePart)part.GetPartById(relId);
// Build a StringBuilder object.
System.Text.StringBuilder paragraphText = new System.Text.StringBuilder();
// Get the inner text of the slide:
System.Collections.Generic.IEnumerable <DocumentFormat.OpenXml.Drawing.Text> texts = slide.Slide.Descendants <DocumentFormat.OpenXml.Drawing.Text>();
foreach (DocumentFormat.OpenXml.Drawing.Text text in texts)
{
paragraphText.Append(text.Text);
}
sldText = paragraphText.ToString();
}
}
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);
}
public static string[] GetAllTextInSlide(DocumentFormat.OpenXml.Packaging.SlidePart slidePart)
{
// Verify that the slide part exists.
if (slidePart == null)
{
throw new System.ArgumentNullException("slidePart");
}
// Create a new linked list of strings.
System.Collections.Generic.LinkedList <string> texts = new System.Collections.Generic.LinkedList <string>();
// If the slide exists...
if (slidePart.Slide != null)
{
// Iterate through all the paragraphs in the slide.
foreach (DocumentFormat.OpenXml.Drawing.Paragraph paragraph in
slidePart.Slide.Descendants <DocumentFormat.OpenXml.Drawing.Paragraph>())
{
// Create a new string builder.
System.Text.StringBuilder paragraphText = new System.Text.StringBuilder();
// Iterate through the lines of the paragraph.
foreach (DocumentFormat.OpenXml.Drawing.Text text in
paragraph.Descendants <DocumentFormat.OpenXml.Drawing.Text>())
{
// Append each line to the previous lines.
paragraphText.Append(text.Text);
}
if (paragraphText.Length > 0)
{
// Add each paragraph to the linked list.
texts.AddLast(paragraphText.ToString());
}
}
}
if (texts.Count > 0)
{
// Return an array of strings.
return(System.Linq.Enumerable.ToArray(texts));
}
else
{
return(null);
}
}
// Get the title string of the slide.
public static string GetSlideTitle(DocumentFormat.OpenXml.Packaging.SlidePart slidePart)
{
if (slidePart == null)
{
throw new System.ArgumentNullException("presentationDocument");
}
// Declare a paragraph separator.
string paragraphSeparator = null;
if (slidePart.Slide != null)
{
// Find all the title shapes.
var shapes = from shape in slidePart.Slide.Descendants <DocumentFormat.OpenXml.Presentation.Shape>()
where IsTitleShape(shape)
select shape;
System.Text.StringBuilder paragraphText = new System.Text.StringBuilder();
foreach (var shape in shapes)
{
// Get the text in each paragraph in this shape.
foreach (var paragraph in shape.TextBody.Descendants <DocumentFormat.OpenXml.Drawing.Paragraph>())
{
// Add a line break.
paragraphText.Append(paragraphSeparator);
foreach (var text in paragraph.Descendants <DocumentFormat.OpenXml.Drawing.Text>())
{
paragraphText.Append(text.Text);
}
paragraphSeparator = "\n";
}
}
return(paragraphText.ToString());
}
return(string.Empty);
}
// 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);
}
