[问题]C# 结构体对齐:如何将变长byte数组对齐

[StructLayout(LayoutKind.Sequential,Pack=1)] 
struct Report_Read_Parameter 
{ 
    byte Confirmation; 
    byte ListID; 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] 
    byte[] ParameterID; 
    byte Length; 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = ***)] // based on the Length 
    byte[] ParameterValue; 
    byte Status; 
}