如何在另一个char数组（已编组）中复制char数组

Question

我想复制一个64的char数组，它是一个方法的参数到一个结构成员，我使用我的结构作为Buffer，结构中的成员也被定义为64的char数组，但是它被编组。我尝试使用不同的方法，但每次复制此数组时，它显示的值是00 00 00 .......还有另一种方法来复制它。

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
protected struct TCommandParam
{
    public int IValue;
    [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.U1, SizeConst = 4096)]
    public char[] SValue;
    [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.U1, SizeConst = 64)]
    public char[] FrameFD;
    [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.U1, SizeConst = 16)]
    public char[] CRCProfile;
    public int TCanTime;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
protected struct TCommandBuffer
{
    public int Command;
    [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = 10)]
    public TCommandParam[] Param;
    public int ReturnValue;

    public TCommandBuffer(int tsize)
    {
        this.Command = 0;
        this.Param = new TCommandParam[tsize];
        this.ReturnValue = 0;
    }
}

这是我要复制的功能。

public int CAN_TransmitSingleFD(int canNo, int iD, char[] frameFD)
{
    this.ReadBuffer();
    this.CANDIAG_CommandBufferInit();
    this.buff.Param[1].IValue = canNo;
    this.buff.Param[2].IValue = iD;
    this.buff.Param[3].FrameFD = frameFD;
    this.CANDIAG_Client_SendCommand(809);
    this.WriteBuffer();
    return this.CANDIAG_CommandBufferExit();
}