I thought that this might be the case. What you are getting is the correct behaviour. Whilst the Library containing your controls is included in a solution, the system does not use the assigned icon. It always uses the Cog icon. To find out if your icon assignments are working you have to manually install your controls into the Toolbox. For the easy way to do that take a look at this[^]. The 'standard' way to do it is to right click on the toolbox, in the section where you want your controls added, select 'add items' or 'choose items' depending on version of VS. When the dialogue appears click the browse button, navigate to and select your dll and then click OK. Before doing either of the above, you might also want to right click the toolbox and select 'Add Tab'. You can then call it 'My Controls' or whatever you like, to keep your stuff separate. If you do this, when you right-click to add the controls, make sure to right-click in your new tab, so that the controls are added there. Hope this helps.
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