紧急求助神思二代身份证读卡器调用问题
机型：神思SS628型usb接口二代身份证

巡检代码如下：

Private Sub Timer1_Timer()
    Dim cmd As Byte
    Dim para0 As Long
    Dim para1 As Long
    Dim para2 As Long

    Dim FileName As String
    Dim FileNumber As Integer
    Dim FileLength As Long
    
    Dim sData As String
    
    Dim sName As String
    Dim byData(256) As Byte
    Dim sSex As String
    Dim sFolk As String
    Dim sBirth As String
    Dim sAddr As String
    Dim sID As String
    Dim sIssue As String
    Dim sBegin As String
    Dim sEnd As String    '
    If Not bRun Then
        bRun = True
        '========================================================
        txtMsg.Caption = "请放卡..."
        cmd = 67 '0x43
        para0 = 0
        para1 = 8811
        para2 = 9986
        
        nRet = UCommand1(cmd, para0, para1, para2)  '验证卡
        If nRet = 62171 Then
            txtMsg.Caption = "正在读卡..."
            '--------------------------------------------
            sLname.Caption = ""
            sLsex.Caption = ""
            sLfolk.Caption = ""
            sLbirth.Caption = ""
            sLAddr.Caption = ""
            sLissue.Caption = ""
            sLID.Caption = ""
            sLindate.Caption = ""
            sLnewaddr.Caption = ""
            
            Picture1.Picture = LoadPicture(App.Path & "\blank.bmp")
            '--------------------------------------------
            cmd = 68 '0x44 读卡内信息
            para0 = 0 
 
            para1 = 8811
            para2 = 9986
        
            nRet = UCommand1(cmd, para0, para1, para2)  '读卡内信息

            If nRet = 62171 Then
                'On Error GoTo FileContainsError
                FileName = App.Path & "\wz.txt"             ' "E:\VB\wz.txt"    '调试时指定路径，因为VB调试是工作路径不是程序路径
                FileNumber = FreeFile
                Open FileName For Binary Access Read Shared As FileNumber
                FileLength = LOF(FileNumber)
                If FileLength = 256 Then
                    Get FileNumber, 1, byData
                    sData = byData
                    
                    '姓名
                    sName = Mid$(sData, 1, 15)
                    Trim (sName)
                    sLname.Caption = sName
                    'MsgBox sName, vbOKOnly, "Info", 0, 0
                    
                    '性别
                    sSex = Mid$(sData, 16, 1)
                    Trim (sSex)
                    If sSex = "1" Then
                        sLsex.Caption = "男"
                    ElseIf sSex = "2" Then
                        sLsex.Caption = "女" 
 
                    Else
                        sLsex.Caption = "非法"
                    End If
                    'MsgBox sSex, vbOKOnly, "Info", 0, 0
                    
                    
                    '民族
                    sFolk = Mid$(sData, 17, 2)
                    Trim (sFolk)
                    sLfolk.Caption = GetFolk(sFolk)
                    'MsgBox sFolk, vbOKOnly, "Info", 0, 0
                    
                    '出生日期
                    sBirth = Mid$(sData, 19, 8)
                    Trim (sBirth)
                    sLbirth.Caption = Mid$(sBirth, 1, 4) + "年" + Mid$(sBirth, 5, 2) + "月" + Mid$(sBirth, 7, 2) + "日"
                    'MsgBox sBirth, vbOKOnly, "Info", 0, 0
                
                    '地址
                    sAddr = Mid$(sData, 27, 35)
                    Trim (sAddr)
                    sLAddr.Caption = sAddr
                    'MsgBox sAddr, vbOKOnly, "Info", 0, 0
                
                    '身份证号
                    sID = Mid$(sData, 62, 18)
                    Trim (sID) 
 
                    sLID.Caption = sID
                    'MsgBox sID, vbOKOnly, "Info", 0, 0
                
                    '签发机关
                    sIssue = Mid$(sData, 80, 15)
                    Trim (sIssue)
                    sLissue.Caption = sIssue
                    'MsgBox sIssue, vbOKOnly, "Info", 0, 0
                
                    
                    '有效期限
                    sBegin = Mid$(sData, 95, 8)
                    Trim (sBegin)
                    'MsgBox sBegin, vbOKOnly, "Info", 0, 0
                
                    sEnd = Mid$(sData, 103, 8)
                    Trim (sEnd)
                    'MsgBox sEnd, vbOKOnly, "Info", 0, 0
                    sLindate.Caption = sBegin + "-" + sEnd
                    
                    Picture1.Picture = LoadPicture(App.Path & "\zp.bmp")
                    
                End If
                
                Close FileNumber
            ElseIf nRet = -5 Then
                MsgBox "软件未授权!", vbOKOnly, "提示信息", 0, 0
            End If
        End If 
 
        '========================================================
        bRun = False
    End If
End Sub

第61行我获取到的长度为0，所以总显示不出身份证信息，大家帮帮忙。。。。 身份证 神思 二代身份证
[解决办法]
单步调试一下？看看那行有问题？
[解决办法]
打开文件　wz.txt　
断定文件长度，如此而已.....
[解决办法]
因为你的txt文件是空的，所以获取到当然为0了。
[解决办法]
读入后，用正则表达式提取各个信息，出来的快