how to transfer contents of char[] to a String^ in C++/CLI

Question

I've commandLine arguments in a C++/CLI program denoted by char* argv[]. I want to transfer all the contents getting concatenated to a String^ class.

Code:

String ^masterString = "Commands=>";

for(int i=0; argv[i] != nullptr; ++i)
masterString += String(argv[i]);

However, I find the above not working in the last statement where I use += operator.

What's the wrong usage here? Error here is No operators match the operands.
Any other better ways to store contents into String^ from char*?

`String` is a Java class, in C++ it's `std::string`. What error are you getting ? — iammilind, Oct 24 '12 at 10:27
This is wrong `for(int i=0; argv[i] != nullptr; ++i)` should be `for(int i=0; i < argc; ++i)` — john, Oct 24 '12 at 10:28
I've fixed the question, that's definitely a C++/CLI and not C++. — m0nhawk, Oct 24 '12 at 10:30
Can anyone pl help? looks like an answer proposed is deleted below. — stack_pointer is EXTINCT, Oct 24 '12 at 11:57
possible duplicate of [What is the best way to convert between char\* and System::String in C++/CLI](http://stackoverflow.com/questions/56561/what-is-the-best-way-to-convert-between-char-and-systemstring-in-c-cli) — philant, Oct 24 '12 at 19:32

score 0 · Answer 1 · answered Oct 24 '12 at 14:19

Look into MSDN, mostly into this:

#include <stdlib.h>
#include <string.h>
#include <msclr\marshal.h>

using namespace System;
using namespace msclr::interop;

int main() {
   const char* message = "Test String to Marshal";
   String^ result;
   result = marshal_as<String^>( message );
   return 0;
}

btw: I didn't check this. Just googled it. But, I think, this would work, cause it posted in MSDN.

how to transfer contents of char[] to a String^ in C++/CLI

1 Answers1