C++中传过来的数组到C#中转换的问题

[jxb_memory]

C++中：
struct test
{
WORD wHeader;
DWORD nSize;
DWORD nID;
char cCmd;
//char sDevID[16];
};
C#中：
public struct test
{
public UInt16 wHeader;
public UInt32 dwSize;
public UInt32 dwID;

public Char cCmd;
//public string sDevID;
｝
// C++的回调函数传过来的结构 p
public static int CallbackTestOK(IntPtr p, Int32 nEvt)
{
test t= (test)Marshal.PtrToStructure(p, typeof(FS_PACKET));
}
当结构中没有char sDevID[16]时没有问题，但是当添加了sDevID的定义后不知道C#中应该如何定义，
比如使用string或Byte[] p;p = new Byte[16];都不行啊？？？谁知道如何定义？？？

[ParanoidKing]

public struct test
{
    public UInt16 wHeader;
    public UInt32 dwSize;
    public UInt32 dwID;

    public Char cCmd;
    [MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 16)]
    public Char[] sDevID;
｝

[bdmh]

[MarshalAsAttribute(UnmanagedType.ByValArray, SizeConst = 16)]定义长度

[cnfixit]

试试这个

  /// char[16]
    [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst=16)]
    public string sDevID;

[__天涯寻梦]

[StructLayout(LayoutKind.Sequential)]
public struct test
{
    public ushort wHeader;
    public uint dwSize;
    public uint dwID;
    public byte cCmd;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sDevID;
}

[jxb_memory]

非常感谢各位，结贴给分。

[vinjent]

試試
Marshal.GetDelegateForFunctionPointer(IntPtr, type)