How to run C# sample projects on DraftSight SDK

Hi,

I am trying to test DraftSight API sample projects which are included in DraftSight installation folder. I use Visual Studio 2012 to open dsSamples.sln and build only C# projects.

Then I open DraftSight, use LoadApplication command to load the C# DockControl DLL file. But it returns error: An unsigned add-in, DockControl.DLL, has been detected, and will not be loaded. Only signed and authenticated add-ins are permitted.

I don't know how to make it work. How to make this add-in to be signed to have it work on DraftSight.

Thank you,