DWORD myfunction(PULONG number, PULONG sramber);

        [DllImport("C:\\Users\\Administrator\\Desktop\\DLL\\DLL.dll", CharSet = CharSet.Auto)]
        public static extern UInt32 myfunction(
            out UInt32 number,
	out UInt32[] sramber,
            );

UInt32 nr = new UInt32();
UInt32[] tbl = new UInt32[256];
myfunction(out nr, out tbl);