如何将自定义的structure转换为byte数组(VB.Net)

      Dim myStru As aa
        myStru.a1 = "AA"
        myStru.a2 = 1
        myStru.a3 = 2

        Dim rawsize As Integer = Runtime.InteropServices.Marshal.SizeOf(myStru)
        Dim buffer As IntPtr = Runtime.InteropServices.Marshal.AllocHGlobal(rawsize)

        Runtime.InteropServices.Marshal.StructureToPtr(myStru, buffer, False)

        Dim rawdatas(rawsize - 1) As Byte

        Runtime.InteropServices.Marshal.Copy(buffer, rawdatas, 0, rawsize)
        Runtime.InteropServices.Marshal.FreeHGlobal(buffer)

        MsgBox(UBound(rawdatas))
        'rawdatas 就是你需要的Byte()