Using c code with c#

[aliche]

Hello

I would like to know how to import a c or c++ code using c# without using a dll.
I m using visual studio 2005

Thank you

[NIKHILUNNIKRISHNAN]

Hai,

Why do you want to import it directly without using a dll ? How will the system understand the location of your code ? If its a dll,it will be having all the necessary informations required. else how will you ensure that its complete by its own ?

[balabaster]

Here's a tutorial that describes the process:

http://blogs.msdn.com/texblog/archive/2007/04/05/linking-native-c-into-c-applications.aspx

[NIKHILUNNIKRISHNAN]

I'm going to create a C# application that uses C++/CLI to call into native C++ code without using C#'s unsafe language extensions. Let's take a look at the simple C# application in Listing 1, which consists mostly of the code generated for me by the new C# Console Application project wizard:

Listing 1: Program.cs
using System;
using System.Collecti ons.Generic;
using System.Text;
using MyInteropCode;

namespace ConsoleApplicat ion1
{
class Program
{
static void Main(string[] args)
{
String s = CPPClass.CallCP PFcn();
Console.WriteLi ne(s);
}
}
}

Two things worth noting here: this module is referencing a namespace called MyInteropCode, which I'll talk about in a moment, and it's calling a C++ function called CPPClass.CallCP PFcn(). Listing 2 contains the C++/CLI interop code that is being referenced by Program.cs. Listing 2: clrcode.cpp
#include "nativecode .h"

using namespace System;

namespace MyInteropCode
{

ref class CPPClass
{
public:
static String^ CallCPPFcn()
{
wchar_t c[32];
GetStringFromNa tive(c, sizeof(c) / sizeof(c[0]));
return gcnew String(c);
}
};

}


clrcode.cpp defines the MyInteropCode namespace, which contains a managed class called CPPClass. It is in this class (or some collection of similar classes) that I would place my interop functions, which leverage IJW interop technology to offer CLS-compliant interfaces and call native C++ within their implementation. In this case, I'm surfacing one static function called CallCPPFcn(), that returns a System::String. Within CallCPPFcn(), I create a local character array, pass that array to a native C++ function to be populated, and then construct a new System::String from that that array, which is returned to the C# caller in Program.cs. Listing 3 shows nativecode.cpp, which as you might guess contains the GetStringFromNa tive() function called from clrcode.cpp.

Listing 3: nativecode.cpp
#include "string.h"
#include "nativecode .h"

void GetStringFromNa tive(wchar_t* c, int num)
{
wchar_t* s = L"Hello from native C++!";
wcsncpy_s(c, num, s, wcslen(s));
}

GetStringFromNa tive()'s job is to populate the array passed in argument c with a locally defined string. The two C++ files share a common header, shown in Listing 4, which simply contains the prototype for GetStringFromNa tive().

Listing 3: nativecode.h
void GetStringFromNa tive(wchar_t* c, int num);


Hope this is what you want.

with regards from,
Nikhil Unnikrishnan.

[balabaster]

Way to rip off the code from the link I posted... at least post credits to the original author if you're going to do that...