Smart Cards in .NET, Part 2
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Today, learn the basics of writing a pure managed wrapper for Smart Cards on the WinSCard API using
interop to accomplish this.
A Support File for this article is available here.
In the previous article of this series we had an introduction to the smart card standards and the PC/SC specification. We also accessed the Smart Card using the Smart Card API. To access Smart Cards in .NET we made a COM Component and accessed the Smart Card in .NET with its help.
In this article we’ll see the basics for writing a pure managed wrapper on the WinSCard API and write a sample program to do so. Along the way I’ll explain to you the basics of interop by means of which we’ll accomplish all of the aforementioned things. These concepts are general and can be applied not only to this problem, but any problem where one needs to access the native Win32 API from within the .NET framework.
How to approach
One can approach the problem of accessing Smart Card in .NET in many ways. We already discussed one way in the last article. Now we’ll try accessing the WinSCard API directly without involving any of the COM and Runtime Callable Wrappers we used in that case.
In this case, we’ll use the Platform Invoke services of the .NET framework and access the Smart Card API directly from our C# or VB .Net code. Let’s take a quick look at the basics of using the Interop services before we move into the details of writing a managed wrapper on the whole Smart Card API.
Next: The Basics >>
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