Grep Object from one observablecollection with datagrid.selecteditem and delete it in another collection?
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i have a problem. i have two observable collections with the same objects as content.
 
i grep one object from my datagrid with observablecollection

<i>datagrid.selecteditem as object </i>

and want to delete it from the second observable collection. the line statement looks like

<i> obscollection.remove(datagrid.selecteditem as object);</i>

the objects are completly the same, but when i count obscollection the object isn't removed...
 
how can i solve this ? pls no questions on, why i need 2 collections with the same content ;)
