Problem with using project resource file at Design time

Hello Community,

Could you help me with the right way of using resources in .NET project at design time?

What I need is to prepare a list of images and use it then as icons of menu and toolbutton items. I've created new resource file (Resource1.resx) via "Add -> New Item -> Misc -> Empty resource file", and then add an image to that resource file. Build Action property is set to "EmbeddedResource". But then, when I'm trying to assign image to a menu item, the "Select resource" window doesn't contain any resources under "Project resource".

What action(s) I have missed?

I'm using SharpDevelop 5.1.0.5134

Thank you in advance!