是否限制VB.NET一天中的进出时间? [英] Limiting the time in and time out in a day in VB.NET?
问题描述
我已经开发了一个使用指纹的时间监控系统,员工可以扫描手指,然后记录时间的到来和超时.但是我的问题是员工登录和注销都是无限的.有什么解决方案可以使员工一天一次登录登出?每个员工都将登录并注销一次.这是我的每日时间记录表的代码:(我使用Visual Studio 2010/扫描仪使用Digital Persona UareU)
I have developed a time monitoring system using fingerprint where the employee will scan his/her finger then it will record the time in and time out. But my problem is logging in and logging out by the employee is unlimited. Is there a solution where the employee can log in and log out ONCE IN A DAY? Every employee will log in and log out once. Here is my code for my Daily Time Record Form: (Im using visual studio 2010/Digital Persona UareU for my scanner)
Imports MySql.Data.MySqlClient
Imports System.Windows.Forms
Imports DPFP
Public Class frmDTR
Dim counter As Integer = 0
Dim oConn As New MySqlConnection(ConnectionString.ConnString)
Private matcher As DPFP.Verification.Verification
Private matchResult As DPFP.Verification.Verification.Result
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
Me.Close()
End Sub
Public Sub SEARCH_EMPLOYEE()
Try
'Load From DB
GlobalFunctions.db_connect()
Dim reader As MySqlDataReader
Dim command As MySqlCommand = connection.CreateCommand()
command.CommandText = "SELECT * FROM employee_records WHERE ID_Number='" & strid & "'" 'check tag number if existing
reader = command.ExecuteReader()
If (reader.HasRows) Then
While (reader.Read())
With Me
'plot the data into controls
.txtID.Text = reader(1).ToString
.txtFirst.Text = reader(2).ToString
.txtMiddle.Text = reader(3).ToString
.txtLast.Text = reader(4).ToString
.txtAge.Text = reader(5).ToString
.txtBday.Text = reader(6).ToString
.txtDepartment.Text = reader(7).ToString
.txtYear.Text = reader(8).ToString
.txtGender.Text = reader(9).ToString
.txtContact.Text = reader(10).ToString
.txtMobile.Text = reader(11).ToString
.txtEmail.Text = reader(12).ToString
'fetch image from database
Dim imgBytes() As Byte = reader("image") 'image field
Dim image As Bitmap = New Bitmap(New System.IO.MemoryStream(imgBytes)) 'convert binary to image
.ProfilePic.Image = image 'show picture to picture box
End With
Call LOG_EMP() 'look up if login /log out
Timer1.Enabled = True
End While
Else
'Me.lblStatus.Text = "ID not recognized!"
End If
Catch ex As Exception
MessageBox.Show("Error scanning: " & ex.Message)
End Try
GlobalFunctions.connection.Close()
End Sub
Public Sub LOG_EMP()
Try
' Load From DB
GlobalFunctions.db_connect()
Dim reader As MySqlDataReader
Dim command As MySqlCommand = connection.CreateCommand()
command.CommandText = "SELECT * FROM employee_logs WHERE ID_Number='" & strid & "' AND Time_Out='Null'"
reader = command.ExecuteReader()
If (reader.HasRows) Then
While (reader.Read())
End While
'logout
Call EMP_LOGOUT()
Else
'log in
Call EMPT_LOGIN()
End If
Catch ex As Exception
MessageBox.Show("Error scanning: " & ex.Message)
End Try
GlobalFunctions.connection.Close()
End Sub
'insert login data
Public Sub EMPT_LOGIN()
' Connect to Database
GlobalFunctions.db_connect()
Dim command As MySqlCommand
Dim transaction As MySqlTransaction
transaction = GlobalFunctions.connection.BeginTransaction()
Try
command = New MySqlCommand("INSERT INTO employee_logs values('','" & txtID.Text & "','" & txtFirst.Text & "','" & txtMiddle.Text & "','" & txtLast.Text & "','" & txtDepartment.Text & "','" & Date.Today & "','" & TimeOfDay & "','Null') ", GlobalFunctions.connection, transaction)
command.ExecuteNonQuery()
transaction.Commit()
'sms = txtFirst.Text & " Enter the Building Premises @" & Now 'actual sms
lblStatus.ForeColor = Color.Lime
Dim SAPI
SAPI = CreateObject("SAPI.spvoice")
SAPI.Speak("Welcome!" & txtFirst.Text)
Me.lblStatus.Text = "Successfully Logged IN! Welcome!" 'set status to login
'Will_SendSMS() 'send sms to number
Catch ex As MySqlException
MessageBox.Show("Error in inserting new record! Error: " & ex.Message, "Data Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
transaction.Rollback()
End Try
'close connections
GlobalFunctions.connection.Close()
End Sub
Public Sub EMP_LOGOUT()
' Connect to Database
GlobalFunctions.db_connect()
' Dim command As MySqlCommand
Dim transaction As MySqlTransaction
transaction = GlobalFunctions.connection.BeginTransaction()
Try
GlobalFunctions.execute_nonquery("Update employee_logs set Time_Out='" & TimeOfDay & "' WHERE ID_Number='" & strid & "' AND Time_Out='Null' AND Date='" & Date.Today & "'")
transaction.Commit()
'sms = txtFirst.Text & " Left the Building Premises @" & Now & "Powered by: " ' actual sms to be sent
lblStatus.ForeColor = Color.Lime
Dim SAPI
SAPI = CreateObject("SAPI.spvoice")
SAPI.Speak("Goodbye!" & txtFirst.Text)
lblStatus.Text = "Successfully Logged OUT! Goodbye!" ' set status to logout
'Will_SendSMS() 'send sms
Catch ex As MySqlException
MessageBox.Show("Error in updating a record! Error: " & ex.Message, "", MessageBoxButtons.OK, MessageBoxIcon.Error)
transaction.Rollback()
End Try
' close connections
GlobalFunctions.connection.Close()
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'counter for display
counter += 1
If counter = 6 Then
Call ClearTextBox(Me)
lblStatus.ForeColor = Color.Lime
Me.lblStatus.Text = "Please scan your finger....."
Lblverify.ForeColor = Color.Black
Lblverify.Text = "Status"
ProfilePic.Image = Nothing
Timer1.Enabled = False
counter = 0
End If
End Sub
Private Sub frmDTR_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated
Try
Me.VerificationControl.Focus()
Catch ex As MySqlException
MessageBox.Show("System Error: " & ex.Message, "", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Private Sub frmDTR_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
matcher = New Verification.Verification()
matchResult = New Verification.Verification.Result
Me.VerificationControl.Focus()
Dim SAPI
SAPI = CreateObject("SAPI.spvoice")
SAPI.Speak("Please scan your finger")
End Sub
Private Sub VerificationControl_OnComplete(ByVal Control As Object, ByVal FeatureSet As DPFP.FeatureSet, ByRef EventHandlerStatus As DPFP.Gui.EventHandlerStatus) Handles VerificationControl.OnComplete
Dim strSQL As String = "Select * from finger_template"
Dim oDa As New MySqlDataAdapter(strSQL, oConn)
Dim dt As New DataTable
Dim dr As DataRow
Try
oDa.Fill(dt)
For Each dr In dt.Rows
Lblverify.ForeColor = Color.Red
Lblverify.Visible = True
Dim bytes As Byte() = Nothing
bytes = dr.Item("byte_template")
Dim tmplate = New DPFP.Template()
tmplate.DeSerialize(bytes)
matcher.Verify(FeatureSet, tmplate, matchResult)
If matchResult.Verified Then
EventHandlerStatus = DPFP.Gui.EventHandlerStatus.Success
strid = dr.Item("Account_ID")
Call SEARCH_EMPLOYEE()
Exit For ' success
End If
If Not matchResult.Verified Then EventHandlerStatus = DPFP.Gui.EventHandlerStatus.Failure
Lblverify.Text = "Status"
lblStatus.Text = "Unrecognize fingerprint....."
Lblverify.ForeColor = Color.Red
lblStatus.ForeColor = Color.Red
Timer1.Start()
Next
Catch ex As Exception
End Try
End Sub
End Class
推荐答案
这很不错,您正在开发此逻辑.其实我遇到了您的疑问.现在,我可以为您推荐一些使用后端MS ACCESS 2007的vb.net代码.您只需验证员工何时登录,然后在登录"按钮后输入此代码,或者您使用的是什么.
This is very nice that you are developing this logic. Actually I have come a crossed YOUR question. Now I can recommend you some vb.net code using back end MS ACCESS 2007 .well You just validate when an employee logged in then put this code after log In button or what ever you are using .
Dim cmd1 as oledbcommond
cmd1 = New OleDbCommand("SELECT * FROM LOGTIME WHERE timein<>null and timeout<>null and dt='" & Label8.Text & "' and eid='" & txtemid.Text & "' ", cn)
dr = cmd1.ExecuteReader()
If dr.Read Then
MessageBox.Show("Already this Employee ID contains today's attendance,now you can't Log again", "Information On Your ID", MessageBoxButtons.OK, MessageBoxIcon.Information)
cmd1.Dispose()
cn.Close()
Exit Sub
End If
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