retbook.frm

图书管理系统 内有13个窗体 （附送代码） 功能包括查询 添加删除 修改

VERSION 5.00
Begin VB.Form retbook 
   Caption         =   "还书处理"
   ClientHeight    =   4800
   ClientLeft      =   60
   ClientTop       =   465
   ClientWidth     =   9345
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   4800
   ScaleWidth      =   9345
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame2 
      Caption         =   "还书人信息"
      Height          =   2295
      Left            =   480
      TabIndex        =   1
      Top             =   2040
      Width           =   8655
      Begin VB.CommandButton cmd_back 
         Caption         =   "返回"
         Height          =   495
         Left            =   5040
         TabIndex        =   15
         Top             =   1680
         Width           =   1695
      End
      Begin VB.CommandButton cmd_list 
         Caption         =   "列罚款单"
         Height          =   495
         Left            =   1560
         TabIndex        =   14
         Top             =   1680
         Width           =   1695
      End
      Begin VB.TextBox txtmulct 
         Height          =   375
         Left            =   6960
         MaxLength       =   9
         TabIndex        =   13
         Top             =   1080
         Width           =   1215
      End
      Begin VB.TextBox txtcannum 
         Height          =   375
         Left            =   5340
         MaxLength       =   9
         TabIndex        =   12
         Top             =   1080
         Width           =   1215
      End
      Begin VB.TextBox txtalreadynum 
         Height          =   375
         Left            =   3600
         MaxLength       =   9
         TabIndex        =   11
         Top             =   1080
         Width           =   1335
      End
      Begin VB.TextBox txtname 
         Height          =   375
         Left            =   1860
         MaxLength       =   16
         TabIndex        =   10
         Top             =   1080
         Width           =   1455
      End
      Begin VB.TextBox txtrno 
         Height          =   375
         Left            =   360
         MaxLength       =   4
         TabIndex        =   9
         Top             =   1080
         Width           =   1335
      End
      Begin VB.Label Label5 
         Caption         =   "罚金"
         Height          =   375
         Left            =   6960
         TabIndex        =   8
         Top             =   600
         Width           =   975
      End
      Begin VB.Label Label4 
         Caption         =   "可借书数"
         Height          =   375
         Left            =   5400
         TabIndex        =   7
         Top             =   600
         Width           =   975
      End
      Begin VB.Label Label3 
         Caption         =   "已借书数"
         Height          =   375
         Left            =   3600
         TabIndex        =   6
         Top             =   600
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "姓名"
         Height          =   375
         Left            =   1920
         TabIndex        =   5
         Top             =   600
         Width           =   975
      End
      Begin VB.Label Label1 
         Caption         =   "借书证号"
         Height          =   375
         Left            =   360
         TabIndex        =   4
         Top             =   600
         Width           =   975
      End
   End
   Begin VB.Frame Frame1 
      Caption         =   "输入图书编号"
      Height          =   1215
      Left            =   480
      TabIndex        =   0
      Top             =   360
      Width           =   8655
      Begin VB.CommandButton cmd_ok 
         Caption         =   "确定"
         Height          =   375
         Left            =   5280
         TabIndex        =   3
         Top             =   480
         Width           =   1455
      End
      Begin VB.TextBox txtbno 
         Height          =   375
         Left            =   360
         MaxLength       =   4
         TabIndex        =   2
         Top             =   480
         Width           =   3135
      End
   End
End
Attribute VB_Name = "retbook"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public rno As String
Public bno As String
Public brs As ADODB.Recordset
Public bs As ADODB.Recordset
Public rs As ADODB.Recordset




Private Sub cmd_back_Click()
Unload Me
End Sub

Private Sub cmd_list_Click()
Dim dstr As String
dstr = "罚款单" + Chr(10) + Chr(13)
dstr = dstr & "姓名:" & Trim(txtname.Text) + "(" + Trim(txtrno.Text) + ") 罚款总额:" & str(txtmulct.Text) & "元"
MsgBox dstr, vbOKOnly, "列款罚单"

End Sub

Private Sub cmd_ok_Click()
bno = Trim(txtbno.Text)
If bno <> "" Then
txtsql = "select * from borrow where 图书编号='" + bno + "'"
Set brs = exesql(txtsql)
If brs.EOF = True Then
MsgBox "不是从本图书馆所借，不能归还!", vbOKOnly, "信息提示"
Else
If Trim(brs.Fields("借书证号")) <> rno Then
If rno <> "" Then
dstr = "罚款单" + Chr(10) + Chr(13)
dstr = dstr & "姓名:" & Trim(txtname.Text) + "(" + rno + ") 罚款总额:" & str(txtmulct.Text) & "元"
MsgBox dstr, vbOKOnly, "列罚款单"
End If
rno = Trim(brs.Fields("借书证号"))
txtsql = "select * from book  where 图书编号='" + bno + "'"
Set bs = exesql(txtsql)
bs.Fields("借否") = "借"
bs.Update
txtsql = "select * from reader where 借书证号='" + rno + "'"
Set rs = exesql(txtsql)
rs.Fields("已借书数") = rs.Fields("已借书数") - 1
rs.Update
txtrno.Text = rno
txtname.Text = rs.Fields("姓名")
txtalreadynum.Text = rs.Fields("已借书数")
txtcannum.Text = rs.Fields("借书总数") - rs.Fields("借书总数")
If (Date - brs.Fields("借书日期")) < rs.Fields("借书天数") Then
txtmulct.Text = 0
Else
txtmulct.Text = Val((Date - brs.Fields("借书日期") - rs.Fields("借书天数"))) * rs.Fields("过期罚款")
End If
MsgBox "" + str(rs.Fields("过期罚款"))
Else
rno = Trim(brs.Fields("借书证号"))
txtsql = "select * from book where 图书编号='" + bno + "'"
Set bs = exesql(txtsql)
bs.Fields("借否") = "否"
bs.Update
txtsql = "select * from book where 借书证号='" + rno + "'"
Set rs = exesql(txtsql)
rs.Fields("已借书数") = rs.Fields("已借书数") - 1
rs.Update
txtalreadynum.Text = rs.Fields("已借书数")
txtcannum.Text = rs.Fields("借书总数") - rs.Fields("已借书数")
If (Date - brs.Fields("借书日期")) > rs.Fields("借书天数") Then
txtmulct.Text = Val(txtmulct.Text) + Val((Date - brs.Fields("借书日期") - rs.Fields("借书天数"))) * rs.Fields("过期罚款")
End If
End If
brs.Delete
brs.Close
End If
Else
MsgBox "图书编号不能为空", vbOKOnly, "信息提示"
End If
End Sub



Private Sub Form_Load()
rno = ""
End Sub