public static T ToStructure<T>(byte[] data)
{
    unsafe
    {
        fixed (byte* p = &data[0])
        {
            return (T)Marshal.PtrToStructure(new IntPtr(p), typeof(T));
        }
    };
}

public static T Read<T>(BinaryReader reader) where T : new()
{
    T instance = new T();
    return ToStructure<T>(reader.ReadBytes(Marshal.SizeOf(instance)));
}