While designing a website using .NET I recommended to use some Matlab facilities. So how can I add Matlab code in.NET?

teaching MATLAB  for mathematics students pertained to specialization area

To use MATLAB from an external program for example(.NET), there are three possible solutions:

1. low level C API: The direct access to the MATLAB C API is the best solution in terms of performance and features, just let use P/Invoke and some unsafe pointer operations. 
2. DDE : The Dynamic Data Exchange is a quite old but powerful service of Windows that lets applications communicate and exchange data.
3. COM : MATLAB exposes itself as a COM Automation Server, so we can use the .NET COM Interoperability to use its functions: we can work directly using a Type Library or using only the Dispatch interface.

I have experience in the design, just across MATLAB software, and no more (I'm not witty in advanced applications of MATLAB)