c++ - Difference between System::Convert::ToString() and std::to_string()? -

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I am a complete Noah in Visual C ++ programming, so I do not know whether it makes sense or not.

Well, I'm trying to change a label text to display in a form, so if I do this: 

  int value_a = 1; Int value_b = 2; System :: String ^ J; J = System :: Convert :: ToString (value_a) + "," + System :: Convert :: ToString (value_b); Label 1 - & gt; Text = j;   
 It works perfectly, but when I tried to do this:  
  int value_a = 1; Int value_b = 2; System :: String ^ J; J = std :: to_string (valor1) + "," + std :: to_string (valor2); Label1-> Text = j;   
 I get lots of errors ... what is the difference between using  
  string j;   
 or  
  System :: string ^ j;   
 between more functions  
  System :: Convert :: Toasting ();   
 and  
  std :: to_string ();   
 ????   
 
 
  system :: string ^ j;  is a C ++ / CLI string that is the implementation of C ++ at the top of Microsoft's NAT framework so that you can communicate it with NIT languages ​​(C #, VB.Net) and still use C + Able to use +  ^  A garbage collective indicator used by C ++ / CLI means that  gcnew   
  std :: When using string, do not need to care about cleaning yourself C ++ version of the standard library wire. It can call it something like  native C ++ .  
 Every time you use the  new  with an indicator, you should not forget to call  delete .  
  System :: Convert :: Toasting  is also Microsoft from C ++ / CLI.  
  std :: to_string  will be equal to C ++ 11 equivalent.  
 Implementations are quite different, so you can not expect to get the same results with these different types.

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