将C＃byte []传递给C ++作为无符号字符[] [英] Pass C# byte[] to C++ as Unsigned Char[]

问题描述

拥有C＃字符串包含十六进制值，并且需要将其传递给接受unsigned char []的C ++ / CLI方法。我怎样才能传递这些信息。



我试图将字符串转换为C＃byte []然后将其传递给c ++，但只传递了数组的第一个元素。 br $>


C＃

Having a C# string contains hexadecimal value and required to pass it to C++/CLI method that accept unsigned char[]. How can I pass that information.

I tried to convert the string into C# byte [] and then pass it to c++ but only first element of array is passed.

C#

byte[] Byte = StringToByteArray(Data);
      unsafe
      {
          byte* _passData;
          fixed (byte* p = Byte)
          {
              _passData = (byte*)p;
          }
          SCARem.set_briefprivdata(_passData);
      }

C ++

C++

void detdata(unsigned char _data[])

如果将字符串传递给c ++，然后将其转换为c ++中的unsigned char []，请分享更方便。



最终结果是C ++ unsigned char []。谢谢

Please share if passing an string to c++ and then converting it into unsigned char[] in c++ is more convenient.

End result required is C++ unsigned char[]. Thanks

推荐答案

我更喜欢Stringbuilder将字符串传递给C ++。请查看我的文章及其代码。

I prefer Stringbuilder for passing strings to C++. Take a look at my article and its code.

您可以使用带有.NET String 的函数添加C ++ / CLI类，并调用 detdata 功能。在该方法中，您可以使用 marshal_as 来转换字符串。类似于：

You can add a C++/CLI class with a function that takes a .NET String and call the detdata function. In that method, you can use marshal_as to convert the string. Something like:

#include <string>

#include <msclr\marshal_cppstd.h>

using namespace msclr::interop;

void detdata(unsigned char _data[]);

public ref class Class1
{
public:
	Class1(void) {}

	void f1(System::String^ str)
	{					
		std::string data = marshal_as<std::string>(str);
		detdata((unsigned char*)data.c_str());
	}
};

然后，你可以使用 f1 函数在你的C＃代码中。类似于：

Then, you can use the f1 function in your C# code. Something like:

Class1 c1 = new Class1();
c1.f1("Text 1");
c1.f1("Text 2");
c1.f1("Text 3");

谢谢你们这样做了。使用下面提到的代码。

Thanks guys its done. Using below mentioned code.

void Convert(String^ Data)
        {
            unsigned char array[28];

            array<String^>^ strArray = gcnew array<String^>(28);
            strArray = Data->Split(',');

            int val = 0, index = 0;

            for each (String^ value in strArray)
            {
                val = int::Parse(value);
                array[index] = val;
                index++;
            }
        }

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