/// <summary>
/// The EstablishContext function establishes the smart card resourete manager context.
/// </summary>
/// <param name="dwScope">
/// Scope of the resource manager context.
/// </param>
public void EstablishContext(SCARD_SCOPE dwScope)
{
int ret = WinSCardAPIWrapper.SCardEstablishContext((uint)dwScope, IntPtr.Zero, IntPtr.Zero, out phContext);
if (ret == 0)
{
Trace.WriteLineIf(scardTrace, string.Format(" SCard.EstablishContext({0})", (SCARD_SCOPE)dwScope));
}
else
{
throw new WinSCardException(scardTrace, "SCard.EstablishContext", ret);
}
}
/// <summary>
/// Establishes the smart card resourete manager context and selectes the specified reader.
/// </summary>
/// <param name="szReader">
/// The name of the reader that contains the target card.
/// </param>
/// <param name="dwScope">Scope of the resource manager context.</param>
public void Connect(string szReader, SCARD_SCOPE dwScope)
{
try
{
this.SCard.EstablishContext(dwScope);
if (!string.IsNullOrEmpty(szReader))
{
this.readerName = szReader;
return;
}
this.SCard.ListReaders();
if (this.SCard.ReaderNames.Length == 1)
{
this.readerName = this.SCard.ReaderNames[0];
return;
}
Console.WriteLine("------------------------------------------------------");
Console.WriteLine("Available PC/SC Readers:");
Console.WriteLine("------------------------------------------------------");
for (int i = 0; i < this.SCard.ReaderNames.Length; i++)
{
Console.WriteLine(string.Format("Reader {0:#0}: {1}", i, this.SCard.ReaderNames[i]));
}
Console.WriteLine("");
Console.Write("Please select a reader (0..n): ");
this.readerName = this.SCard.ReaderNames[int.Parse(Console.ReadLine())];
}
catch (WinSCardException ex)
{
throw ex;
}
catch (Exception ex)
{
throw ex;
}
}
public static extern HRESULT SCardEstablishContext(SCARD_SCOPE scope, IntPtr reserved1, IntPtr reserved2, [Out] out IntPtr hContext);
/// <summary>
/// Establishes the smart card resourete manager context and provides the list of readers.
/// </summary>
/// <param name="dwScope">Scope of the resource manager context.</param>
public void Connect(SCARD_SCOPE dwScope)
{
Connect(null, dwScope);
}
// The EstablishContext function establishes the smart card resourete manager context.
// Scope of the resource manager context.
//you can also change the Context such that it operates outside of the local context
public void EstablishContext(SCARD_SCOPE dwScope)
{
//returns zero if successful according to
int ret = WinSCardAPIWrapper.SCardEstablishContext( (uint)dwScope, IntPtr.Zero, IntPtr.Zero, out phContext );
if(ret == 0)
{
Trace.WriteLineIf(scardTrace, string.Format(" SCard.EstablishContext({0})", (SCARD_SCOPE)dwScope));
}
else
{
throw new WinSCardException( scardTrace, "SCard.EstablishContext", ret );
}
}
