-1
我是新来的.NET,我想确定是否使用winscard的SCardGetStatusChange检测到卡或移除卡。但它返回retcode = -2146435063,当转换为十六进制将给我0x80100009 = SCARD_E_UNKNOWN_READER。我只是根据我的代码pinvoke.netSCardGetStatusChange中的未知阅读器Winscard
这里是我的代码
Public Structure SCARDREADER_STATE
Public szReader As String
Public pvUserData As IntPtr
Public dwCurrentState As Integer
Public dwEventState As Integer
Public cbAtr As Integer
Public rgbAtr() As Byte
End Structure
<DllImport(winscarddll, CharSet:=CharSet.Ansi, EntryPoint:="SCardGetStatusChangeA")>
Public Shared Function SCardGetStatusChange(ByVal hContext As IntPtr, ByVal dwTime As Integer, ByRef rgReaderState As SCARDREADER_STATE(), ByVal cReaders As Integer) As Integer
End Function
而且在我的表格样本。
Public Function gAtr(ByVal hContext As IntPtr, ByVal reader As String) As String
Dim ret As Integer
Dim rs(0) As WinscardFun.SCARDREADER_STATE
Console.Write(reader)
'ReDim rs(0).rgbAtr(0 To 35)
'rs(0).dwEventState = &H0
'rs(0).rgbAtr = Nothing
'rs(0).cbAtr = 0
rs(0).szReader = reader ' "\\\\?PnP?\\Notification"
rs(0).dwCurrentState = SCARD_STATE_UNAWARE
ret = WinscardFun.SCardGetStatusChange(hContext, 100000000, rs, 1)
Console.Write("Ret=" + ret.ToString + vbCrLf)
Console.Write("Reader:" + rs(0).szReader + vbCrLf)
If ret = 0 And rs(0).cbAtr > 0 And rs(0).rgbAtr IsNot Nothing Then
test = "Success"
Else
test = "Fail"
End If
Return test
End Function
输出是
惩戒= -2146435063 读卡器:ACS ACR1222 3S PICC读卡器PICC 0 故障
你确定你有读卡器安装驱动吗?您是否曾经通过您的计算机上的其他应用程序工具成功使用您的读卡器? –
是的,事实上我成功地使用了scardconnect和scardreaderlist。所以我相信读者工作正常。我只想使用scardgetstatuschange来识别是否检测到卡。你能提供 – Anonymouse24
的结果吗 SCardListReaders –