Convert Word.InlineShape to Excel.Workbook c# -

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there excel.workbooks in word document.

i can word.inline shapes need convert them excel.application

word.inlineshapes shapes=wordapp.activedocument.inlineshapes;

those shapes created via

wordapp.selection.inlineshapes.addoleobject("msgraph.chart.8", excellapp.activeworkbook.name, false, false, type.missing, type.missing, type.missing, type.missing);

how can convert them excel.workbook again?

also tried ; 

word.inlineshapes shapes = wordapp.activedocument.inlineshapes;  foreach(word.shape shape in shapes) {      word.chart chart = shape.chart; }

but throws unimplemented exception.

try this:

word.oleformat ole = shape.oleformat; ole.activate(); excel.workbook book = (excel.workbook)ole.object;

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