Mixed mode managed c

Hi all,

We have a mixed mode managed c dll here and I need help.

The internals of the dll are using native c and the interface is exposing managed c so that c# can call it. We are passing a System.String into the dll and need to convert it to char*.

Currently the developer is looping for each character in the string and placing the value into the char. There has got to be a better way.

Anyone?

Thanks

FDB

http://support.microsoft.com/?kbid=311259

disclaimer: C/C++ is yucky to me

I have my answer. I will post it so that it is in the archives incase anyone else needs it.

System::String^ CString2DotNetOut()
{

          char* cString = "20 chars for testing";
          System::String^ sString = System::Runtime::InteropServices::Marshal::PtrToStringAnsi(System::IntPtr(cString));
          return sString;
}

void DotNetString2CStringOut(System::String^ sString)
{

          char* cString = (char*)System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(sString).ToPointer();
          cout << cString;
}

FDB

Don't forget to free the allocation made by StringToHGlobalAnsi...