PDFsharp & MigraDoc Foundation

Hello,

I'am new here.
How can I delete all Text-Objects from a PDF-Page with PDFSharp ?

met

If someone knows the answer would be a great help:
I'm trying to remove an image using this code

PdfDictionary resources = document.Pages[page].Elements.GetDictionary("/Resources");
PdfDictionary xObjects = resources.Elements.GetDictionary("/XObject");
...find the key of the image to delete...
xObjects.Elements.Remove(key);

When opening the document Adobe Reader says
"Could not find the XObject named '/XXX'
where XXX is the key of the XObject I removed.

Why does Adobe Reader search that element if I deleted it.

Workaround:
I tried to remove (or even simply damage) the stream of that XObject, that works fine but is not that great solution to the problem.