C#

SendMessage
(
    GetDesktopWindow(), 
    WM_MOUSEWHEEL, 
    MakeWParam
    (
        LowWord((uint)MK_CONTROL),         
        HighWord
        (
            (uint)System.Windows.Forms.SystemInformation.MouseWheelScrollDelta
        )
    ), 
    MakeLParam(0, 0)
);

const int WM_MOUSEWHEEL = 0x020A;

[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

[DllImport("user32.dll", SetLastError = false)]
static extern IntPtr GetDesktopWindow();

public static ushort LowWord(uint val)
{
    return (ushort)val;
}

public static ushort HighWord(uint val)
{
    return (ushort)(val >> 16);
}

private int MakeLParam(int p, int p_2)
{
    return ((p_2 << 16) | (p & 0xFFFF));
}

public static uint MakeWParam(ushort low, ushort high)
{
    return ((uint)high << 16) | (uint)low;
}

public virtual int SaveChanges();
public virtual DbSet Set(Type entityType);