how can i create visio executive shape with picture

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C#

VSTO

AddIn

Visio

hello,

i am writing a microsoft visio addin with c#.
this addin has a button and when this button is pressed an executive shape copied on the page.
at the same time, i want a picture in this shape but i can not add the picture from c#.

i know there is a selection in visio "Insert Picture..", when right mouse button clicked on the shape. how can i use this feature.

can you help me.

thx