/// <inheritdoc />
/// <summary>
/// Lists readers within given reader groups.
/// </summary>
/// <param name="readerGroups">Names of the reader groups</param>
/// <returns>String array with names of active readers.</returns>
public IReadOnlyList <string> ListReaders(IReadOnlyList <string> readerGroups)
{
byte[] multiNullTerminatedBytesArray;
try
{
var readerGroupsBytes = readerGroups == null
? null
: BinaryHelper.ConvertMultiNullTerminatedByteArrayFromStringEnumerable(Encoding, readerGroups)
.ToArray();
multiNullTerminatedBytesArray = WinSCardWrapper.ListReaders(Handle, readerGroupsBytes);
}
catch (Win32Exception e) when(e.ErrorCodeEquals(0x8010002E)) // 0x8010002E -> SCARD_E_NO_READERS_AVAILABLE
{
multiNullTerminatedBytesArray = new byte [0];
}
return((IReadOnlyList <string>)BinaryHelper.ConvertByteToString(Encoding,
multiNullTerminatedBytesArray));
}