// Replace text in PPT slide
private void ReplaceTextMatchingAltText(PresentationDocument presentationDocument, string relationshipId)
{
OpenXmlElementList slideIds = presentationDocument.PresentationPart.Presentation.SlideIdList.ChildElements;
foreach (SlideId sID in slideIds) // loop thru the SlideIDList
{
string relId = sID.RelationshipId; // get first slide relationship
if (relationshipId == relId)
{
SlidePart slide = (SlidePart)presentationDocument.PresentationPart.GetPartById(relId); // Get the slide part from the relationship ID.
P.ShapeTree tree = slide.Slide.CommonSlideData.ShapeTree;
foreach (P.Shape shape in tree.Elements <P.Shape>())
{
// Run through all the paragraphs in the document
foreach (A.Paragraph paragraph in shape.Descendants().OfType <A.Paragraph>())
{
foreach (A.Run run in paragraph.Elements <A.Run>())
{
if (run.Text.InnerText.Contains("Name"))
{
run.Text = new A.Text("Your new text");
}
}
}
}
}
}
}
