c# - Open xml cannot get a drawing element -

i going through docx, uscing open xml find images.

so, doing drawings, got docproperties child, title containing

list<drawing> sdtelementdrawing = worddoc.maindocumentpart.document.descendants<drawing>()                                               .where(element =>                                                   element.getfirstchild<drawing>() != null                                                   && element.getfirstchild<docproperties>().title.value.contains("image")).tolist(); 

and docx xml looks likes in first part(it bigger, copy relevant part) :

<w:drawing>       <wp:anchor distt="0" distb="0" distl="114300" distr="114300" simplepos="0" relativeheight="251658240" behinddoc="1" locked="0" layoutincell="1" allowoverlap="1" xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingdrawing">         <wp:simplepos x="0" y="0" />         <wp:positionh relativefrom="column">           <wp:posoffset>2171700</wp:posoffset>         </wp:positionh>         <wp:positionv relativefrom="paragraph">           <wp:posoffset>-1168400</wp:posoffset>         </wp:positionv>         <wp:extent cx="2286000" cy="746760" />         <wp:effectextent l="0" t="0" r="0" b="0" />         <wp:wrapnone />         <wp:docpr id="1" name="image 1" descr="c:\users\pictures\imagerm.jpg" title="imagerm" />       </wp:anchor>     </w:drawing> 

but don't find sdtelementdrawing.

so think miswrote sdtelementdrawing query. must miss obvious way tell "get drawing child, there docproperties title image", cannot find it.

i tried this, doesn't work better :

                        list<drawing> sdtelementdrawing = worddoc.maindocumentpart.document.descendants<drawing>()                                       .where(element =>                                           element.getfirstchild<drawing>() != null &&                                            element.getfirstchild<drawing>().anchor.getfirstchild<docproperties>().title.value.contains("image")).tolist(); 

have tried one?

list<drawing> sdtelementdrawing = worddoc.maindocumentpart.document.descendants<drawing>()     .where(element => element.descendants<docproperties>().any(         prop => prop.title.value.toupper().contains("image")     )).tolist();