how can i use vc++ code in C#

i have written code in vc++.But i used c# for GUI .now how can i put the vc++ code in c#.

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Hi tariq6000,

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There are two ways to do this:

1) PInvoke:
It works only if C++ library exposes functions (API). If C++ library exposes classes, PInvoke doesn't work.

2) Using C++/CLI wrapper (works both for classes and API). To do this you need to create C++/CLI Class Library and define .NET class which can be called by C# client. Internally C++/CLI class works with unmanaged code. Advantage of using C++/CLI that it can call unmanaged code directly, without using PInvoke - exactly by the same way as it is done in unmanaged C++ client.
tariq6000Author Commented:
if i m using .net framework then what need to unmanaged to maneged
it's respnsobility of clr

Your question is not clear! Could you please explain what is that you are looking for? ... How to call unmanaged code from managed code has already been posted above.
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