string to int
 

Does anyone know how to convert a "String^" data type in a visual studio 2005 forms app to an "int"? Ive tried atoi and casting to no success. Any ideas? Thanks.

Re: string to int
 

try

Int32::Parse(stringname)

Re: string to int
 

C++/CLI handles boxing and unboxing implicitly. Either of these work just peachy:

using namespace System;



#include <iostream>



int main()

{

  String^ s = "123";

  int x = Convert::ToInt32(s);



  std::cout << x * x << '\n';

}

using namespace System;



#include <iostream>



int main()

{

  String^ s = "123";

  int x = Int32::Parse(s);



  std::cout << x * x << '\n';

}

Re: string to int
 

[edit] misread the OP

Re: string to int
 

Thanks, but new issue.

 String^    comPort  = "COM" + this->RS232CommPortNum->Value;

int        baudRate = Convert::ToInt32(this->cbBaudRate->ValueMember);

SerialPort com      = gcnew SerialPort(comPort, baudRate);

error C2664: 'System::IO::Ports::SerialPort::SerialPort(System::ComponentModel::IContainer ^)' : cannot convert parameter 1 from 'System::IO::Ports::SerialPort *' to 'System::ComponentModel::IContainer ^'

this should work but it is giving me a wierd error. There are seven different overloads for SerialPort() and I dont understand why it is interpreting it this way. Any suggestions? Thanks again.

I want to use the SerialPort(SYSTEM string^ portname, int baudrate)

Re: string to int
 

gcnew creates a new managed reference object. You need to declare the variable holding the object as a managed reference:

SerialPort^ com = gcnew SerialPort(comPort, baudRate);

Re: string to int
 

Great, I dont have much experience with visual studio forms, thanks a lot for your help.