frmbookquery.frm

这是图书馆管理系统

VERSION 5.00
Begin VB.Form frmbookquery 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "图书资料查询"
   ClientHeight    =   3825
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   6105
   Icon            =   "frmbookquery.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MDIChild        =   -1  'True
   MinButton       =   0   'False
   ScaleHeight     =   3825
   ScaleWidth      =   6105
   ShowInTaskbar   =   0   'False
   Begin VB.ComboBox Cbotypes 
      Height          =   300
      Left            =   1560
      Style           =   2  'Dropdown List
      TabIndex        =   11
      Top             =   2160
      Width           =   1215
   End
   Begin VB.TextBox Txtpublish 
      Height          =   315
      Left            =   1560
      TabIndex        =   10
      Top             =   2760
      Width           =   2175
   End
   Begin VB.TextBox Txtauthor 
      Height          =   315
      Left            =   1560
      TabIndex        =   9
      Top             =   1440
      Width           =   2175
   End
   Begin VB.TextBox Txtbookname 
      Height          =   315
      Left            =   1560
      TabIndex        =   8
      Top             =   840
      Width           =   3255
   End
   Begin VB.TextBox Txtbookindex 
      Height          =   315
      Left            =   1560
      TabIndex        =   7
      Top             =   240
      Width           =   2175
   End
   Begin VB.CommandButton Cmdcancel 
      Caption         =   "取消"
      Height          =   375
      Left            =   4920
      TabIndex        =   1
      Top             =   3360
      Width           =   975
   End
   Begin VB.CommandButton Cmdok 
      Caption         =   "确定"
      Height          =   375
      Left            =   3480
      TabIndex        =   0
      Top             =   3360
      Width           =   975
   End
   Begin VB.Label Lblpublish 
      AutoSize        =   -1  'True
      Caption         =   "出版社名称包含"
      Height          =   180
      Left            =   240
      TabIndex        =   6
      Top             =   2880
      Width           =   1260
   End
   Begin VB.Label Lblauthor 
      AutoSize        =   -1  'True
      Caption         =   "作者姓名包含"
      Height          =   180
      Left            =   240
      TabIndex        =   5
      Top             =   1560
      Width           =   1080
   End
   Begin VB.Label Lbltypes 
      AutoSize        =   -1  'True
      Caption         =   "图书类别"
      Height          =   180
      Left            =   240
      TabIndex        =   4
      Top             =   2280
      Width           =   720
   End
   Begin VB.Label Lblbookname 
      AutoSize        =   -1  'True
      Caption         =   "图书名称包含"
      Height          =   180
      Left            =   240
      TabIndex        =   3
      Top             =   960
      Width           =   1080
   End
   Begin VB.Label Lblbookindex 
      AutoSize        =   -1  'True
      Caption         =   "图书编号包含"
      Height          =   180
      Left            =   240
      TabIndex        =   2
      Top             =   360
      Width           =   1080
   End
End
Attribute VB_Name = "frmbookquery"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Cmdcancel_Click()
    Unload Me
End Sub
Private Sub Form_Load()
    '窗体加载时，自动生成的数据
    Cbotypes.Clear
     Cbotypes.AddItem ""
    Cbotypes.AddItem "报纸"
    Cbotypes.AddItem "图书"
    Cbotypes.AddItem "杂志"
    Cbotypes.ListIndex = 0
End Sub
Private Sub Cmdok_Click()
    Dim strSQL As String
    strSQL = "select * from bookmessage where"
    Dim s1 As String, s2 As String, s3 As String, s4 As String, s5 As String
    '判断查询资料是否为空，如果为空，则查询所有的资料
    If Txtbookindex.Text = "" And Txtbookname.Text = "" And Txtauthor.Text = "" And Cbotypes.Text = "" And Txtpublish.Text = "" Then
        If MsgBox("是查所有图书的资料吗？", vbInformation + vbYesNo, "图书资料查询") = vbYes Then
            strSQL = "select * from bookmessage"
        Else
            MsgBox "请输入一些图书的基本资料", vbInformation + vbOKOnly, "图书资料查询"
            
        End If
    End If
        '图书编号不为空时的查询语句
    If Trim(Txtbookindex.Text) <> "" Then
        s1 = "(bookindex like '%" & Trim(Txtbookindex.Text) & "%')"
        strSQL = strSQL & s1
        If Trim(Txtbookname.Text) <> "" Then
            s2 = "and(bookname like '%" & Trim(Txtbookname.Text) & "%')"
            strSQL = strSQL & s2
            If Trim(Txtauthor.Text) <> "" Then
                s3 = "and(author like '%" & Trim(Txtauthor.Text) & "%')"
                strSQL = strSQL & s3
                If Cbotypes.Text <> "" Then
                    s4 = "and(types like '%" & Cbotypes.Text & "%')"
                    strSQL = strSQL & s4
                    If Trim(Txtpublish.Text) <> "" Then
                        s5 = "and(publish like '%" & Trim(Txtpublish.Text) & "%')"
                        strSQL = strSQL & s5
                    End If
                End If
            End If
        End If
        '图书编号为空，图书名不为空时的查询语句
    ElseIf Trim(Txtbookname.Text) <> "" Then
        s2 = "(bookname like '%" & Trim(Txtbookname.Text) & "%')"
        strSQL = strSQL & s2
        If Trim(Txtauthor.Text) <> "" Then
            s3 = "and(author like '%" & Trim(Txtauthor.Text) & "%')"
            strSQL = strSQL & s3
            If Cbotypes.Text <> "" Then
                s4 = "and(types like '%" & Cbotypes.Text & "%')"
                strSQL = strSQL & s4
                If Trim(Txtpublish.Text) <> "" Then
                    s5 = "and(publish like '%" & Trim(Txtpublish.Text) & "%')"
                    strSQL = strSQL & s5
                End If
            End If
        End If
         '图书编号，图书名为空，作者不为空时的查询语句
    ElseIf Trim(Txtauthor.Text) <> "" Then
        s3 = "(Author like '%" & Trim(Txtauthor.Text) & "%')"
        strSQL = strSQL & s3
        If Cbotypes.Text <> "" Then
            s4 = "and(types like '%" & Cbotypes.Text & "%')"
            strSQL = strSQL & s4
            If Trim(Txtpublish.Text) <> "" Then
                s5 = "and(publish like '%" & Trim(Txtpublish.Text) & "%')"
                strSQL = strSQL & s5
            End If
        End If
         '图书编号，图书名，作者为空，类型不为空时的查询语句
    ElseIf Cbotypes.Text <> "" Then
        s4 = "(types like '%" & Cbotypes.Text & "%')"
        strSQL = strSQL & s4
        If Trim(Txtpublish.Text) <> "" Then
            s5 = "and(publish like '%" & Trim(Txtpublish.Text) & "%')"
            strSQL = strSQL & s5
        End If
         '图书编号，图书名，作者，类型为空，出版社不为空时的查询语句
    ElseIf Trim(Txtpublish.Text) <> "" Then
        s5 = "(publish like '%" & Trim(Txtpublish.Text) & "%')"
        strSQL = strSQL & s5
    End If
         '调用模块中的函数
    If QueryEmpInfo(strSQL) = True Then
        If g_DBRct.EOF And g_DBRct.BOF Then
            If MsgBox("输入的图书信息错误，还要查吗？", vbInformation + vbYesNo, "错误的信息") = vbYes Then
                Txtbookindex.Text = ""
                Txtbookname.Text = ""
                Txtauthor.Text = ""
                Txtpublish.Text = ""
            End If
        Else
            Unload Me
            FrmBookSelect.Show
        End If
    End If
End Sub