I can't seem to find an answer for this anywhere. An icon before the label on the default tabcontrol tabs would suffice for my needs.
Thanks in advance.
Q: You need to clarify what library set you're using: Winforms, WPF, ASP.Net, GTK#, etc. – Nathan Ernst
A: You are totally right, my mistake. I'm using Winforms. I switched back from WPF, since WPF was crashing in some computers.