Hello Roberto Modica,
There are two approaches that you can take here.
The first one is to store only the ID of the item that you want to link to. This will allow you to reuse the MediaContentSelector to link to documents. I have a ready sample which uses this selector for images. What you have to do is to change the InitializeControls method of the dialog to set the media content selector view to use documents type. The control is created following the steps from this blog post
. I have also attached a modified template for the news view control which pulls the value of the image and then displays it.
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