frmaddbookstyle.frm

小弟变动过的经典图书管理系统

VERSION 5.00
Begin VB.Form 添加图书类别 
   BackColor       =   &H00C0C0C0&
   Caption         =   "添加图书类别"
   ClientHeight    =   1545
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   3045
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   ScaleHeight     =   1545
   ScaleWidth      =   3045
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      Height          =   375
      Left            =   1680
      TabIndex        =   5
      Top             =   1080
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "添加"
      Height          =   375
      Left            =   120
      TabIndex        =   4
      Top             =   1080
      Width           =   1215
   End
   Begin VB.TextBox Text2 
      BackColor       =   &H00E0E0E0&
      Height          =   375
      Left            =   1080
      TabIndex        =   3
      Top             =   600
      Width           =   1815
   End
   Begin VB.TextBox Text1 
      BackColor       =   &H00E0E0E0&
      Height          =   375
      Left            =   1080
      TabIndex        =   2
      Top             =   120
      Width           =   1815
   End
   Begin VB.Label Label2 
      BackStyle       =   0  'Transparent
      Caption         =   "类别编号："
      Height          =   375
      Left            =   120
      TabIndex        =   1
      Top             =   600
      Width           =   975
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      Caption         =   "图书类别："
      Height          =   255
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   1215
   End
End
Attribute VB_Name = "添加图书类别"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
  
 Dim sql As String
 Dim conn As New ADODB.Connection
 Dim rs_bookstyle As New ADODB.Recordset
 
 '判断图书类别是否为空
 If Trim(Text1.Text) = "" Then
   MsgBox "图书类别不能为空 ", vbOK0nly + vbExclamation, ""
   Text1.SetFocus
   Exit Sub
 End If
 '判断类别编号是否为空
 If Trim(Text2.Text) = "" Then
   MsgBox "类别编号不能为空", vbOK0nly + vbExclamation, ""
   Text2.SetFocus
   Exit Sub
 End If

Provider = "Microsoft.Jet.OLEDB.3.5.1 ;Persist Security Info=false;data source=D:\图书管理系统\database.mdb"

conn.Open "provider=Microsoft.Jet.OLEDB.4.0; data source=" & App.Path & "\database.mdb"
 
Dim a As Boolean, b As Boolean

'判定是否有相同类别
 sql = "select * from 图书类别 where 类别名称='" & Text1.Text & "'"
 rs_bookstyle.Open sql, conn, adOpenKeyset, adLockPessimistic
 a = rs_bookstyle.EOF
 rs_bookstyle.Close

'判定是否有相同编号
 sql = "select * from 图书类别 where 类别编号='" & Text2.Text & "'"
 rs_bookstyle.Open sql, conn, adOpenKeyset, adLockPessimistic
 b = rs_bookstyle.EOF

If a And b Then '如果没有相同类别和编号
   rs_bookstyle.AddNew
   rs_bookstyle.Fields(0) = Trim(Text1.Text)
   rs_bookstyle.Fields(1) = Trim(Text2.Text)
   rs_bookstyle.Update
   MsgBox "添加图书类别成功!", vbOKOnly, ""
   rs_bookstyle.Close
   Unload Me
   '刷新图书类别
   Unload 图书类别管理
   图书类别管理.Show

Else
   If a = 0 And b = 0 Then
   MsgBox "图书类别和编号重复！", vbOKOnly + vbExclamation, ""
   Text1.SetFocus
   Text1.Text = ""
   Text2.SetFocus
   Text2.Text = ""
   rs_bookstyle.Close
   
   ElseIf a = 0 And b <> 0 Then
   MsgBox "图书类别重复！", vbOKOnly + vbExclamation, ""
   Text1.SetFocus
   Text1.Text = ""
   
   ElseIf a <> 0 And b = 0 Then
   MsgBox "图书编号重复！", vbOKOnly + vbExclamation, ""
   Text2.SetFocus
   Text2.Text = ""
   
   End If
   Exit Sub
End If
End Sub

Private Sub Command2_Click()
 Unload Me
End Sub