PDFsharp & MigraDoc Foundation

I need to place an image inside of a PDF in a very specific spot. That spot will vary from PDF and will not be known at the time of image insertion.

I have researched the following techniques, but haven't come up with a solution:

1. Place a text field in the PDF, and use it's dimensions and placement to lay the image over the text field. I haven't been able to extract the exact positioning of the text field yet, I did find the dimensions though, but finding the X/Y coordinates of that field in the PDF escapes me.

2. Use the new Image Field provided in Adobe Designer and Live Cycle. To PDFSharp this field just shows up as a PDFButtonField, and there isn't an href property to set. The href property is stored in the XFA, but I can't figure out how to modify or set values in the XFA through PDFSharp.

3. Other named anchors. I do have control over the creation of the PDF's, if there are any easier to access named anchors I could use for placement and sizing of an image in a PDF let me know. I tried to just replace an existing image, but you can't name images so there is no way to tell if I am replacing the appropriate image in the PDF.

Thanks in advance for any guidance.

After working on this for days the final solution was to do #1, but using AspPDF to pull it off.

XFA is not the easiest thing to modify, and even when I did it didn't always update the document.

I couldn't find any other named anchors that PDFSharp or ITextSharp would support.

For #1 both PDFSharp and ITextSharp I could extract the dimensions, etc to size and place the image, but once placed the image was never lined up perfectly.