Icons difference in Windows 7 and Windows 8

I added an icon to my Visual Studio 2012, C#, Winforms project with:

            Bitmap bmp;
#if Pro
            bmp = Resources.icon2;
#else
            bmp = Resources.icon1;
#endif
            this.Icon = Icon.FromHandle(bmp.GetHicon());

The icons show up in the taskbar in Windows 7 but I do not see the icons in the taskbar in Windows 8.

How can I fix this?

Thanks