VB机房收费系统06——上下机

上机

上机流程图

这里个人觉得就是数据表的增删改查，没有思路的看官可以参考我的全码

'上机
Private Sub cmdonline_Click(Index As Integer)
    Dim mrc As adodb.Recordset
    Dim txtsql As String
    Dim msgtext As String
    
    
    '是否输入学号
    If Not testtxt(cardno.Text) Then
        MsgBox "请输入学号!", vbOKOnly + vbExclamation, "警告"
        cardno.SetFocus
        Exit Sub
    Else
    
    
    '验证用户是否已上机
            txtsql = "select * from onLine_Info where cardno='" & Trim(cardno.Text) & "'"
            Set mrc1 = ExecuteSQL(txtsql, msgtext)
            
    If mrc1.EOF = False Then
        MsgBox "该帐号已经上机,不允许重复登录!", vbOKOnly + vbExclamation, "警告"
        cardno.Text = ""
        studentName.Text = ""
        dept.Text = ""
        sex.Text = ""
        class.Text = ""
        grade.Text = ""
        status.Text = ""
        style.Text = ""
    Else
            
     
    '验证学号是否存在
        txtsql = "select * from student_Info where cardno ='" & cardno.Text & "'"
        Set mrc = ExecuteSQL(txtsql, msgtext)
    If mrc.EOF = True Then
            MsgBox txtsql
            MsgBox msgtext
            MsgBox "此用户名不存在，请重新输入!", vbOKOnly + vbExclamation, "警告"
            cardno.SetFocus
    Else
         
         
    '验证余额是否充足
    If Val(mrc.Fields(7)) < 5 Then
            MsgBox "余额不足，请先充值", vbOKOnly + vbExclamation, "警告"
            cardno.Text = ""
            Exit Sub
    Else
            cardno.Text = mrc.Fields(0)
            studentName.Text = mrc.Fields(2)
            dept.Text = mrc.Fields(4)
            sex.Text = mrc.Fields(3)
            class.Text = mrc.Fields(6)
            grade.Text = mrc.Fields(5)
            status.Text = mrc.Fields(10)
            style.Text = mrc.Fields(14)
            ondate.Text = Date
            ontime.Text = Time
            havemoney = mrc.Fields(7)

        
    '更新上机人数
        txtsql = "select * from onLine_Info"
        Set mrc1 = ExecuteSQL(txtsql, msgtext)
        
        txtsql = "select * from User_Info"
        Set mrc2 = ExecuteSQL(txtsql, msgtext)
        
        mrc1.AddNew
        
        mrc1.Fields(0) = Trim(cardno.Text)
        mrc1.Fields(1) = Trim(style.Text)
        mrc1.Fields(2) = Trim(cardno.Text)
        mrc1.Fields(3) = Trim(studentName.Text)
        mrc1.Fields(4) = Trim(dept.Text)
        mrc1.Fields(5) = Trim(sex.Text)
        mrc1.Fields(6) = Date
        mrc1.Fields(7) = Time
        mrc1.Fields(8) = ""
        mrc1.Fields(9) = ""
        mrc.Fields(9) = mrc2.Fields(0)
        mrc1.Update
        onlineNumber.Caption = mrc1.RecordCount
        nowtime.Caption = Time
        MsgBox "上机成功!", vbOKOnly + vbExclamation, "提示"
        mrc1.Close
        
        txtsql = "select * from Line_info "
        Set mrc4 = ExecuteSQL(txtsql, msgtext)
'更新上机记录表
        mrc4.AddNew
        mrc4.Fields(1) = Trim(cardno.Text)
        mrc4.Fields(2) = Trim(cardno.Text)
        mrc4.Fields(3) = Trim(studentName.Text)
        mrc4.Fields(4) = Trim(dept.Text)
        mrc4.Fields(5) = Trim(sex.Text)
        mrc4.Fields(6) = Trim(ondate.Text)
        mrc4.Fields(7) = Trim(ontime.Text)
        mrc4.Fields(13) = "上机"
        mrc4.Fields(14) = VBA.Environ("computername")
        mrc4.Update
        mrc4.Close
End If
End If
End If
End If
End Sub

下机

简单来说，下机的流程就是要删除上机表中的数据外，而且还要把上机的数据记录下来。
下机的难点在于多表的使用，消费时间，消费余额、金额的计算等等。

流程图



全部参考代码如下，希望能帮你建立下机的全局逻辑。

Private Sub cmddown_Click()
'下机
'判断是否输入了学号
    Dim msgtext As String
    Dim txtsql As String
    Dim mrc As adodb.Recordset
    Dim txtdate As String
    Dim txttime As String
    Dim intconsumetime As String
    Dim inttime As String
    Dim intstyle As String
    Dim cash As String
    Dim unittime As String
    Dim rate As String
    Dim mrc6 As adodb.Recordset
    
    
                                                                      
    If cardno.Text = "" Then
        MsgBox "请输入学号!", vbOKOnly + vbExclamation, "警告"
    Else
  
'判断该用户是否上机
        txtsql = "select * from OnLine_Info where cardno='" & Trim(cardno.Text) & "'"
        Set mrc = ExecuteSQL(txtsql, msgtext)
        
    If mrc.EOF = True Then
            MsgBox "该卡号未上机,请重新确认", vbOKOnly + vbExclamation, "警告"
            cardno.Text = ""
            studentName.Text = ""
            dept.Text = ""
            sex.Text = ""
            class.Text = ""
            grade.Text = ""
            status.Text = ""
            style.Text = ""
            ondate.Text = ""
            ontime.Text = ""
    Else
'显示上机帐号数据
        txtsql = "select * from student_Info"
        Set mrc1 = ExecuteSQL(txtsql, msgtext)
        
        txtsql = "select * from BasicData_Info"
        Set mrc2 = ExecuteSQL(txtsql, msgtext)
        
            style.Text = mrc.Fields(1)
            cardno.Text = mrc.Fields(0)
            studentName.Text = mrc.Fields(3)
            dept.Text = mrc.Fields(4)
            sex.Text = mrc.Fields(5)
            ondate.Text = Format(Trim(mrc.Fields(6)), "yyyy-mm-dd")
            ontime.Text = Format(Trim(mrc.Fields(7)), "hh:mm:ss")
            class.Text = mrc1.Fields(6)
            grade.Text = mrc1.Fields(5)
            status.Text = mrc1.Fields(10)
            txtupdate.Text = Format(Date, "yyyy-mm-dd")
            uptime.Text = Format(Time, "hh:mm:ss")
        

'下机结算：时间,金额
        txtdate = DateDiff("n", ondate, txtupdate)
        txttime = DateDiff("n", ontime, uptime)
        txtconsumetime.Text = Int(txttime) + Int(txtdate)
        intcousumetime = txtconsumetime.Text
        
    If intcousumetime < mrc2.Fields(4) Then               '判断消费时间是否小于准备时间
           txtconsumetime = "0"
           spendmoney.Text = "0"
           havemoney.Text = Trim(mrc.Fields(7))
           
    End If
           
    If intcousumetime < mrc2.Fields(3) Then               '判断消费时小于最小上机时间时消费金额为1
           txtconsumetime = "0"
           spendmoney.Text = "1"
           havemoney.Text = Trim(mrc.Fields(7)) - Trim(spendmoney.Text)
           MsgBox "下机成功!", vbonly + vbExclamation, "提示"
           

           
    Else
 '判断临时用户的消费金额
    If mrc1.Fields(14) = "临时用户" Then
            spendmoney.Text = (Int(intcousumetime / 60) + 1) * Trim(mrc2.Fields(1))
            havemoney.Text = Trim(mrc1.Fields(7)) - Trim(spendmoney.Text)

    Else
        
        
'判断固定用户的消费金额
            spendmoney.Text = (Int(intcousumetime / 60) + 1) * Trim(mrc2.Fields(0))
            havemoney.Text = Trim(mrc1.Fields(7)) - Trim(spendmoney.Text)
        
        If havemoney.Text < 0 Then
            recharge.Show
        MsgBox "下机失败，请先充值!", vbonly + vbExclamation, "提示"
    End If
        MsgBox "下机成功!", vbonly + vbExclamation, "提示"
    
        

    End If

'更新上机记录
        mrc.Delete
        mrc.Update
        mrc.Close
        
'更新历史上机记录
        
        txtsql = "select * from Line_info where cardno='" & Trim(cardno.Text) & "'"
        Set mrc4 = ExecuteSQL(txtsql, msgtext)
    
            mrc4.AddNew
            mrc4.Fields(1) = Trim(cardno.Text)
            mrc4.Fields(2) = Trim(cardno.Text)
            mrc4.Fields(3) = Trim(studentName.Text)
            mrc4.Fields(4) = Trim(dept.Text)
            mrc4.Fields(5) = Trim(sex.Text)
            mrc4.Fields(6) = Trim(ondate.Text)
            mrc4.Fields(7) = Trim(ontime.Text)
            mrc4.Fields(8) = Trim(txtupdate.Text)
            mrc4.Fields(9) = Trim(uptime.Text)
            mrc4.Fields(10) = Trim(txtconsumetime.Text)
            mrc4.Fields(11) = Trim(spendmoney.Text)
            mrc4.Fields(12) = Trim(havemoney.Text)
            mrc4.Fields(13) = "下机"
            mrc4.Fields(14) = VBA.Environ("computername")
            mrc4.Update
            mrc4.Close
    End If

'更新学生表学生信息（余额）
    
            txtsql = "select * from student_Info where cardno='" & Trim(cardno.Text) & "'"
            Set mrc6 = ExecuteSQL(txtsql, msgtext)
    
            mrc6.Fields(7) = Trim(havemoney.Text)
            mrc6.Fields(9) = UserName
            mrc6.Fields(10) = "正常"
            mrc6.Fields(11) = "结账"
            mrc6.Fields(12) = Date
            mrc6.Fields(13) = Time
            mrc6.Update
            mrc6.Close
    End If

'更新上机人数
        txtsql = "select * from online_info"
        Set mrc5 = ExecuteSQL(txtsql, msgtext)
        onlineNumber.Caption = "当前上机人数为:" & mrc5.RecordCount
        mrc5.Close

'显示当前时间
        nowtime.Caption = Time

End If

'清空文本框
            style.Text = ""
            cardno.Text = ""
            studentName = ""
            dept.Text = ""
            sex.Text = ""
            ondate.Text = ""
            ontime.Text = ""
            class.Text = ""
            grade.Text = ""
            status.Text = ""
            txtupdate.Text = ""
            uptime.Text = ""
            spendmoney.Text = ""
            txtconsumetime = ""
            havemoney = ""
End Sub

结语

这个专栏针对的读者主要是没有思路的读者，所以我贴源码意在提供思路，部分代码参考。
我相信，对于没有思路的小白，看部分代码拼凑起来的博客，意义不大。