How to add mcscm.dll and use it for smart card - getting error calling mcscm.dll.

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I am migrating a VB6 app to a C# app and need to call this dll with different parameters. It is used similarly to WinScard.dll.

This is the declaration I am using:
[DllImport("MCSCM.dll")]
static extern int MCardInitialize(
IntPtr hScardContext,
string cReaderName,
ref long phMCardContext,
ref long pdwDLLVersion
);

This line returns an internal error value instead of 0 for success:
lReturn = Convert.ToInt64(MCardInitialize(mhSCardCtx, sReaderName, ref hMCardCtx, ref dwDLLVersion));

The MCSCM.dll file is in the C:\Windows32 and C:\SYSWow64 folders.

Thank you for any help.

What I have tried:

I have looked it up on Google. It said to register it running a registry command to be used as a reference. A co-worker found an answer here for the WinScard.dll and hoped to find a simil ar answer for MCSCM.dll.

Posted 25-Oct-19 3:38am

Kraig Kuusinen

Updated 2-Dec-19 5:00am

v2

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F-ES Sitecore · Answer 1 · 2019-10-25T03:47:00

Solution 1

You only have to register dlls that expose COM components. If the dll isn't a COM dll then you just call it directly. Google how to call a dll from c# and you'll find lots of samples.

Posted 25-Oct-19 3:47am

F-ES Sitecore

Comments

Kraig Kuusinen 25-Oct-19 12:35pm

I am trying to find out how to use DLLImport for the MCSCM.dll for the following:
MCardInitialize, MCardConnect, MCardReadMemory, MCardConnect and MCardShutdown. Thank you.