[DOTNET] Calling vararg unmanaged methods

[Leon Finker]

While going through excellent Serge Lidin's IL book,
which shows that vararg unmanaged methods can be
easily called from IL. I tried finding  a way to call unmanaged
vararg methods from C#. The following
seems to be the way to do it (if need be, to interface
with legacy C methods):

class C
{
    [DllImport("msvcrt", CallingConvention = CallingConvention.Cdecl)]
        public static extern int printf(string s, __arglist);
    static void Main(string[] args)
    {
        printf("%d\r\n%s\r\n%.3f\r\n", __arglist(0, "hello", 0.123));
    }
}

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