huanshu.frm

一个功能齐全的图书馆管理系统 可适用与中小学的图书馆的管理

VERSION 5.00
Begin VB.Form huanshu 
   Caption         =   "还书操作"
   ClientHeight    =   3150
   ClientLeft      =   60
   ClientTop       =   390
   ClientWidth     =   4815
   LinkTopic       =   "Form3"
   ScaleHeight     =   3150
   ScaleWidth      =   4815
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command3 
      Caption         =   "离开"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   3240
      TabIndex        =   8
      Top             =   2040
      Width           =   1215
   End
   Begin VB.CommandButton Command2 
      Caption         =   "还书"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   600
      TabIndex        =   7
      Top             =   2040
      Width           =   1215
   End
   Begin VB.TextBox Text3 
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   1800
      TabIndex        =   5
      Text            =   "Text3"
      Top             =   1440
      Width           =   1815
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3840
      TabIndex        =   4
      Top             =   840
      Width           =   735
   End
   Begin VB.TextBox Text2 
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   1800
      TabIndex        =   3
      Text            =   "Text2"
      Top             =   840
      Width           =   1815
   End
   Begin VB.TextBox Text1 
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   1800
      TabIndex        =   1
      Text            =   "Text1"
      Top             =   240
      Width           =   1815
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      Caption         =   "书名："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   240
      Left            =   960
      TabIndex        =   6
      Top             =   1440
      Width           =   720
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      Caption         =   "请输入书号："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   240
      Left            =   240
      TabIndex        =   2
      Top             =   840
      Width           =   1440
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "请输入学号："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   240
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   1440
   End
End
Attribute VB_Name = "huanshu"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset

Private Sub Command1_Click()
If Text1.Text = "" Or Text2.Text = "" Then
MsgBox "学号和书号不能为空！", vbCritical, "错误"
Text1.Text = ""
Text2.Text = ""
Text1.SetFocus
Exit Sub
End If
If IsNumeric(Text1.Text) Or IsNumeric(Text2.Text) Then

Else
MsgBox "学号和书号必须为数字！请注意！！", vbCritical, "错误"
Text1.Text = ""
Text2.Text = ""
Text1.SetFocus
Exit Sub
End If
str2 = "select * from jieshubiao where sno = '" & Text1.Text & "' and bno = '" & Text2.Text & "'"
'查询DataEnv.rsstu的状态，如果已经打开，则先关闭
    If rs.State = adStateOpen Then rs.Close
rs.Open str2, cn, 1, 3
If rs.EOF Then
MsgBox "无该记录或输入数据有误。请查正。"
If Text1.Enabled = False Then
Text1.Enabled = True
End If
Text1.Text = ""
Text2.Text = ""
Text1.SetFocus
        Exit Sub
Else

Text3.Text = rs!bname

Command2.Enabled = True
Text1.Enabled = False
Text2.Enabled = False
Text3.Enabled = False


End If
End Sub

Private Sub Command2_Click()
Call suredel
Text1.Enabled = True
Text2.Enabled = True
Text1.SetFocus
End Sub

Private Sub Command3_Click()
Unload Me
cn.Close
End Sub

Private Sub Form_Load()
Text3.Enabled = False
Command2.Enabled = False
If cn.State = 1 Then cn.Close
'根据目录所在的位置，改变ADO所使用的的连接字符串
   Dim strConn As String
    strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Password=;Data Source="
    '使用相对路径
    strConn = strConn & App.Path & "\database\manager.mdb" & ";Persist Security Info=True"
    cn.ConnectionString = strConn
    cn.Open
End Sub
Private Sub suredel()
If Text1.Text = "" And Text2.Text = "" Then
MsgBox " 您的操作有错误，请检查！", vbCritical, "错误"
Exit Sub
Else
Dim sure As Long
sure = MsgBox("您确认还书吗？", vbOKCancel)
Select Case sure
Case vbOK
rs.Delete
MsgBox "您的书已经还了，欢迎借阅！"
str3 = "select * from book where bno = '" & Text2.Text & "'"
'查询DataEnv.rsstu的状态，如果已经打开，则先关闭
    If rs.State = adStateOpen Then rs.Close
rs.Open str3, cn, 1, 3
rs!borl = "否"
rs.Update
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""

Case vbCancel

Text1.Enabled = True
Text2.Enabled = True
Text1.Text = ""
Text2.Text = ""
Text1.SetFocus
Exit Sub
End Select
End If
End Sub