• #include "stdafx.h"
  using namespace System; //这个命名空间如果缺的话，IntPtr这个无法识别
  int main(array<System::String ^> ^args)
  {
   char* ch1 = "this is chars ";

   //将char*转换为System::String^
   String^ str1= System::Runtime::InteropServices::Marshal::PtrToStringAnsi((IntPtr)ch1);

   //System::String^转换为char*

  char* ch2 = (char*)(void*)Runtime::InteropServices::Marshal::StringToHGlobalAnsi(str1);
   Console::WriteLine(str1);

   Console::WriteLine(ch2);
   Console::ReadLine();
  }

• 从char*转换：

     char *chars = "Hello";

1. 从char*到string:      string s(chars);

2. 从char*到CString:   CString s(chars);

3. 从char*到String^:   String ^s = gcnew String(chars);

• 从string转换

      string str("Hello");

1. 从string到char*:     char chars[64]; strcpy_s(chars, str.c_str());  

2. 从string到CString:   CString s(str.c_str());

3. 从string到String^:   String ^s = gcnew String(str.c_str());

• 从CString转换

      CString str("Hello");

1. 从CString到char*:     char chars[64]; strcpy_s(chars, str);  

2. 从CString到string:     string s(str);

3. 从CString到String^:   String ^s = gcnew String(str);

• 从String^转换

      CString str("Hello");

      pin_ptr<const wchar_t> wch = PtrToStringChars(str);

   1.从String^ 到char*:    

          char chars[64];

          size_t convertedChars = 0;

          wcstombs_s(&convertedChars, chars, wcslen(wch) + 1, wch, _TRUNCATE);
   2.从String^ 到string:    

          string s(wch);
   3.从String^ 到CString:  

          String ^s = gcnew String(wch);

参考1：http://dewei.iteye.com/blog/1566435

参考2：http://blog.csdn.net/sumnuce/article/details/42525071