How Can I use .net dll in C program?

how can i create a DLL of a program written in c program..?

• how can i create a DLL of a program written in c program..?(am using turbo c compiler) the same program i could use with c# or VB program as- DLL reference.. http://support.microsoft.com/kb/106553 check out this link(i didn't understand this..)

• Answer:

  Do not use Turbo C and compile with Visual C++ since we have to use Win32 calling conventions. Suppose math.h is your library. #include <math.h> extern "C" { __declspec(dllexport) double __stdcall MyPow(double, double); } extern double __stdcall MyPow(double x, double y) { return pow(x, y); } And then import it in your C# application, using DllImport. class Program { [DllImport("MyLibrary.dll")] extern static double MyPow(double x, double y); static void Main(string[] args) { Console.WriteLine(MyPow(2.0, 5.0)); Console.ReadKey(); } } This makes your code exteremly unmanaged. A Better approach would be creating a Managed C++ wrapper. To do so, create a new Visual C++ Dynamic Library project, enable Common Language RunTime Support (OldSyntax) under Project Properties > Configuration Properties > C/C++ > General and disable C++ Exceptions in Project Properties > Configuration Properties > C/C++ > Code Generation. Build for release target. extern "C" { #include <math.h> } namespace Wrapper { public __gc class MyClass { public: static double MyPow(double x, double y) { return pow(x, y); } }; }; Then create a new Visual C# project, reference the .DLL file we just made and in Project Properties > Build, check Allow unsafe code if you're using pointers in your original library and need to modify them in your C# application. class Program { static void Main(string[] args) { Console.WriteLine(Wrapper.MyClass.MyPow(2.0, 5.0)); Console.ReadKey(); } }