[Gtk-sharp-list] TreeView.Selection.Mode = SelectionMode.Multiple

[Slug]

So I was looking for a way to get all the selected rows out of a tree view. 
I looked at this page in the monodocs site. 

http://www.go-mono.com/docs/index.aspx?tlink=22@ecma%3a1413%23TreeSelection%2f

That looked easy enough.  However when you set the TreeView.Selection.Mode =
SelectionMode.Multiple  the call to GetSelected() doesn't do anything except
write a message into the ApplicationOutput trace.  The following message is
what I get, but no catchable exception is thrown:

Gtk-CRITICAL **: gtk_tree_selection_get_selected: assertion `selection->type
!= GTK_SELECTION_MULTIPLE' failed 


Then I noticed on the monodocs page for the
Gtk.TreeSelection.SelectedForeach Method there is a note that says This
method is useful when the TreeSelection.Mode of this TreeSelection is set to
Selection.Multiple.   Is this the case?  I saw a few blogs mentioning this
exception  when I Googled the exception, but none of them mentioned
SelectedForeach().  Am I just missing something very simple ?

I'll try and post an example later unless somebody beats me to it. 

- Slug



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