// Context Functions
/// <summary>
/// Establish a resource manager context for the query.
/// </summary>
/// <param name="nScope"></param>
/// <returns></returns>
/// <remarks>
/// The context used by the resource manager when accessing the smart
/// card database. The resource manager context is primarily used by the
/// query and management functions when accessing the database. The scope
/// of the resource manager context can be the current user or the system.
/// </remarks>
public bool EstablishContext(SCardContextScope nScope)
{
uint nErrCode;
if (this.m_fDisposed)
{
throw new ObjectDisposedException(base.GetType().FullName);
}
if (this.m_hContext != IntPtr.Zero)
{
// Just release it so can get new one.
nErrCode = WinSCard.SCardReleaseContext(this.m_hContext);
}
// Establish the resource manager context on the card.
nErrCode = WinSCard.SCardEstablishContext((uint)nScope, IntPtr.Zero, IntPtr.Zero, out this.m_hContext);
// If Service not running
if (nErrCode == 0x8010001d)
{
//MessageBox.Show("The ensure that SCardSvr Service is running. PC/SC routines won't be available.");
// Sometimes this is ok, like installing the omnikey ethernet driver the first time, besides, this is
// a rude practice and the text is gibberish.
return(false);
}
// else there is some other problem
if (nErrCode != 0)
{
//MessageBox.Show(string.Format("SCardEstablishContext failed: 0x{0:X8}", nErrCode));
//SCardException.RaiseWin32ResponseCode(nErrCode);
}
return(true);
}
private static extern uint SCardEstablishContext(SCardContextScope dwScope, IntPtr pvReserved1, IntPtr pvReserved2, out IntPtr phContext);
