Add Context Menu Option To List Item

You can create a new menu option to a SharePoint list item using a feature. The following example install only a 'static' link. i.e. no code behind will be executed when the user clicks on the item.

Check out the following article, to find out how to create a menu option which triggers a code behind when clicked: Add Code-Executing Context Menu Option To List Item

feature.xml
     

elements.xml
This will only associate the new menu option to items of specific Content Type (where the '0xSomeID' equals the Content Type ID). UrlAction is the URL that will open when the user clicks the item.      