将字符数组值从C 传递到C＃应用

我有一个巨大的C 结构，其中我想在C＃项目中导入大量验证代码。除了char*和char []，我能够转移所有值。

用char*，我的字符串充满了thiness torcater，但是，如果我在内存中看，我的字符串在那里，我可以看到"这是一个测试＃1"。

使用char [x]，我只能看到1rst char，在内存中相同。

在以下测试中，我可以提取整数：value1 = data.value1;和值1是123，但是char。

问题：我想念什么，为什么我无法用char阵列获得价值。谢谢你

C DLL

//This is the main DLL file.
#include "stdafx.h"
#include <windows.h>
#include <stdio.h>
extern "C"
{
  public struct Data
  {
    int Value1;
    char* pValue2;
    char Value3[1024];
  };
  typedef int( *FN_CCP_INVOKE_NEW_BOARD_OPTIMIZER) (struct Data* data);
  FN_CCP_INVOKE_NEW_BOARD_OPTIMIZER _pInvokeCallback;
  int __declspec(dllexport)  DLLTestCPlusPlus_Initialize()
  {
    return 0;
  }
  int __declspec(dllexport) DLLTestCPlusPlus_RegisterDllInvokeProcessCallback(void* fnInvokeCaller)
  {
    _pInvokeCallback = (FN_CCP_INVOKE_NEW_BOARD_OPTIMIZER)fnInvokeCaller;
    struct Data data;
    // INT
    data.Value1 = 123;
    // CHAR*
    data.pValue2 = new char[1024];
    sprintf(data.pValue2, "This is a test #1");
    // CHAR [1024]
    sprintf(data.Value3, "This is a test #2");
    if (_pInvokeCallback)
    {
      _pInvokeCallback(&data);
    }
    return 0;
  }
}

这是导入dll的C＃程序。

using System;
using System.Runtime.InteropServices;
  public unsafe struct Data
  {
    public int Value1;
    public char* pValue2;
    public fixed char Value3[1024];
  }
  public static class Interop
  {
    public delegate Int32 Callback([MarshalAs(UnmanagedType.Struct)] Data data);
    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool SetDllDirectory(string lpPathName);

    [DllImport("C:\DATA\CODE\ApplicationTestCSharp\x64\Debug\DLLTestCPlusPlus.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern Int32 DLLTestCPlusPlus_Initialize();
    [DllImport("C:\DATA\CODE\ApplicationTestCSharp\x64\Debug\DLLTestCPlusPlus.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern Int32 DLLTestCPlusPlus_RegisterDllInvokeProcessCallback([MarshalAs(UnmanagedType.FunctionPtr)] Callback handler);
  }
  public class MyTest
  {
    private Interop.Callback _callback = null;
    public MyTest()
    {
      int returnCode = 0;
      returnCode = Interop.DLLTestCPlusPlus_Initialize();
      _callback = new Interop.Callback(CallbackHandler);
      returnCode = Interop.DLLTestCPlusPlus_RegisterDllInvokeProcessCallback(_callback);
    }
    private Int32 CallbackHandler(Data data)
    {
      int value1 = 0;
      string value2 = "";
      string value3 = "";
      unsafe
      {
        // INT
        value1 = data.Value1;
        // CHAR* - MUST BE "This is a test #1"
        value2 = new string(data.pValue2);
        // CHAR [1024] - "This is a test #2"
        value3 = new string(data.Value3);
      }
      return 1;
    }
  }
  class Program
  {
    static void Main(string[] args)
    {
      MyTest myTest = new MyTest();
    }
  }