How to automatically add components from nuget package?

Question

I packed my user controls in a nuget package and published it. When I add a package to the project, the controls are not added to the toolbar.

The Automatically Populate Toolbox setting is set to true (Tools -> Options -> Windows Form Designer

User controls have class attributes, such as:

 [ToolboxItem(true)] [ToolboxBitmap(typeof(TextBox))] [DefaultBindingProperty("Text")] 

The only way to get controls in the toolbar is to view the dll in the packages folder and add it to the toolbar.

But is there a cleaner way in which controls are automatically added to the toolbar after a package is installed (or updated)?