How set image to a Rectangle by OpenXML? - openxml

Question

I have a Rectange in template file PPTX and setting name ="Img"
I want set image to that Rectange:
This is my code, but i can't call shape.Append(part);:
// Open the source document as read/write.
using (var presentationDocument = PresentationDocument.Open(strFile, true))
{
var presentationPart = presentationDocument.PresentationPart;
var templatePart = GetSlidePartsInOrder( presentationPart).Last();
for(int i = 0; i < 2; i++)
{
int ifile = i + 1;
string path = #"F:\AUTOM\t"+ ifile+".png";
var newSlidePart = CloneSlide(templatePart);
// Get the shape tree that contains the shape to change.
P.ShapeTree tree = newSlidePart.Slide.CommonSlideData.ShapeTree;
var shapes = from shape in newSlidePart.Slide.Descendants < P.Shape>()
select shape;
foreach (var shape in shapes)
{
if(shape.OuterXml.Contains("name=\"Img\""))
{
var part = newSlidePart.AddImagePart(ImageExtension(path));
using (var stream = File.OpenRead(path))
{
part.FeedData(stream);
}
**//shape.Append(part);**
}
else
{
// Specify the text of the title shape.
foreach (Paragraph paragraph in shape.Descendants().OfType<Paragraph>())
{
foreach (Run run in paragraph.Elements<Run>())
{
run.Text = new Text("Your new text");
}
}
}
}
AppendSlide(presentationPart, newSlidePart);
}
// Save the modified presentation.
presentationPart.Presentation.Save();
DeleteTemplateSlide(presentationDocument);
}
How set image to a Rectangle by OpenXML?