📄 form4.frm
字号:
VERSION 5.00
Begin VB.Form Form4
Appearance = 0 'Flat
AutoRedraw = -1 'True
BackColor = &H00C0FFFF&
BorderStyle = 0 'None
Caption = "借书管理"
ClientHeight = 3315
ClientLeft = 4920
ClientTop = 3450
ClientWidth = 4965
Icon = "Form4.frx":0000
LinkTopic = "Form4"
ScaleHeight = 221
ScaleMode = 3 'Pixel
ScaleWidth = 331
ShowInTaskbar = 0 'False
Begin VB.TextBox Text2
Height = 270
Left = 1320
TabIndex = 8
Top = 1320
Width = 2175
End
Begin VB.TextBox Text1
Height = 270
Left = 1320
TabIndex = 7
Top = 960
Width = 2175
End
Begin 计算机图书管理系统2008.xp_canvas xp_canvas1
Height = 2055
Left = 1200
TabIndex = 0
Top = 720
Width = 3795
_ExtentX = 10134
_ExtentY = 7011
Begin 计算机图书管理系统2008.xpcmdbutton Command2
Height = 375
Left = 2040
TabIndex = 2
Top = 1320
Width = 1455
_ExtentX = 2778
_ExtentY = 661
Caption = "退 出"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
End
Begin 计算机图书管理系统2008.xpcmdbutton Command1
Height = 375
Left = 360
TabIndex = 1
Top = 1320
Width = 1455
_ExtentX = 2566
_ExtentY = 661
Caption = "借 出"
BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851}
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
End
End
Begin 计算机图书管理系统2008.xptopbuttons xptopbuttons1
Height = 315
Left = 4560
Top = 120
Width = 315
_ExtentX = 556
_ExtentY = 556
End
Begin 计算机图书管理系统2008.xptopbuttons xptopbuttons2
Height = 315
Left = 4200
Top = 120
Width = 315
_ExtentX = 556
_ExtentY = 556
Value = 2
End
Begin VB.Image Image2
Height = 1545
Left = 0
Picture = "Form4.frx":0CCA
Top = 2880
Width = 12765
End
Begin VB.Image Image1
Height = 660
Left = 0
Picture = "Form4.frx":2BAA4
Top = 0
Width = 5580
End
Begin VB.Label Label3
BackColor = &H00C0FFFF&
Height = 375
Left = 120
TabIndex = 6
Top = 2400
Width = 1095
End
Begin VB.Label Label4
BackColor = &H00C0FFFF&
Caption = "借书总数"
Height = 375
Left = 120
TabIndex = 5
Top = 1920
Width = 1095
End
Begin VB.Label Label2
BackColor = &H00C0FFFF&
Caption = "图书编号"
Height = 375
Left = 120
TabIndex = 4
Top = 1440
Width = 1095
End
Begin VB.Label Label1
BackColor = &H00C0FFFF&
Caption = "工 号"
Height = 375
Left = 120
TabIndex = 3
Top = 960
Width = 1095
End
End
Attribute VB_Name = "Form4"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub Command1_Click() '借出图书
Dim sql, sql1, sql2 As String
Dim num As Integer
sql = "select * from record"
sql1 = "select * from worker where [工号]=?"
sql2 = "select * from book where [图书编码]=?"
Dim param1, param2, param3, param4 As ADODB.Parameter
Dim cmd1, cmd2, cmd3, cmd4 As ADODB.Command
Set cmd1 = New ADODB.Command
Set cmd2 = New ADODB.Command
Set cmd3 = New ADODB.Command
Set cmd4 = New ADODB.Command
Set param1 = New ADODB.Parameter
Set param2 = New ADODB.Parameter
Set param3 = New ADODB.Parameter
Set param4 = New ADODB.Parameter
'工号及书号检测
'检验工号及书号的合法性
With param1
.Direction = adParamInput
.Type = adBSTR
.Size = 8
.Value = Text1.Text
End With
cmd1.Parameters.Append param1
cmd1.CommandText = sql1
cmd1.CommandType = adCmdText
Set cmd1.ActiveConnection = con
Set rst = cmd1.Execute
If rst.RecordCount <= 0 Then
frmMsg.Show
frmMsg.notice.Visible = True
frmMsg.Text1.Text = "没有此工号!"
Exit Sub
End If
With param2
.Direction = adParamInput
.Type = adBSTR
.Size = 8
.Value = Text2.Text
End With
cmd2.Parameters.Append param2
cmd2.CommandText = sql2
cmd2.CommandType = adCmdText
Set cmd2.ActiveConnection = con
Set rst1 = cmd2.Execute
If rst1.RecordCount <= 0 Then
frmMsg.Show
frmMsg.notice.Visible = True
frmMsg.Text1.Text = "没有此图书编号!"
Exit Sub
End If
sql2 = "select * from record where [图书编码]=?"
rst1.Close
With param3
.Direction = adParamInput
.Type = adBSTR
.Size = 8
.Value = Text2.Text
End With
cmd3.Parameters.Append param3
cmd3.CommandText = sql2
cmd3.CommandType = adCmdText
Set cmd3.ActiveConnection = con
Set rst1 = cmd3.Execute
'图书状态检测
If rst1.RecordCount > 0 Then
frmMsg.Show
frmMsg.notice.Visible = True
frmMsg.Text1.Text = "此图书已经被借阅！"
Exit Sub
End If
sql1 = "select * from record where [工号]=?"
rst.Close
With param4
.Direction = adParamInput
.Type = adBSTR
.Size = 8
.Value = Text1.Text
End With
cmd4.Parameters.Append param4
cmd4.CommandText = sql1
cmd4.CommandType = adCmdText
Set cmd4.ActiveConnection = con
Set rst = cmd4.Execute
'规定可借阅图书数目检测
If rst.RecordCount = 0 Then
num = rst.RecordCount + 1
Label3.Caption = str(num)
ElseIf rst.RecordCount <= 3 Then
num = rst.RecordCount + 1
Label3.Caption = str(num)
ElseIf rst.RecordCount > 3 Then
frmMsg.Show
frmMsg.notice.Visible = True
frmMsg.Text1.Text = "借阅图书已超限（>4）!"
Label3.Caption = str(rst.RecordCount)
Exit Sub
End If
rst.Close
rst.Open sql, con, adOpenDynamic, adLockOptimistic
rst.AddNew
rst![工号] = Text1.Text
rst![图书编码] = Text2.Text
rst![借阅时间] = Date
rst.Update
frmMsg.Show
frmMsg.info.Visible = True
frmMsg.Text1.Text = "借阅成功！"
End Sub
Private Sub Command2_Click()
Unload Me
End Sub
Private Sub Form_Load()
Dim sql1, sql2 As String
sql1 = "select * from book"
sql2 = "select * from worker"
Set rst = New ADODB.Recordset
Set rst1 = New ADODB.Recordset
Call connect_db
rst.Open sql2, con, adOpenDynamic, adLockOptimistic
rst1.Open sql1, con, adOpenDynamic, adLockOptimistic
End Sub
Private Sub xptopbuttons1_Click()
Unload Me
End Sub
Private Sub xptopbuttons2_Click()
Me.WindowState = 1
End Sub
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