Convert System::String to char* and vice versa

 Convert System::String to char*

char* ConvertStringToChar( String^ str)

{

           using namespace Runtime::InteropServices;

          IntPtr p = Marshal::StringToHGlobalAnsi(str);

          return static_cast<char*>(p.ToPointer());

 }

 Convert char* to System::String

 String^ ConvertCharToString(char* strChar, int length)

{

       String^ msg = gcnew String((char*)strChar);

      if (msg->Length > length)

      msg = msg->Substring(0, length);

     return msg;

}