count.vb

这是一个完善的图书馆管理系统.后台数据库采用ACCESS.

Public Class frmCount
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents labFirst As System.Windows.Forms.Label
    Friend WithEvents labSecond As System.Windows.Forms.Label
    Friend WithEvents labFouth As System.Windows.Forms.Label
    Friend WithEvents labThird As System.Windows.Forms.Label
    Friend WithEvents labFifth As System.Windows.Forms.Label
    Friend WithEvents labSixth As System.Windows.Forms.Label
    Friend WithEvents labSeventh As System.Windows.Forms.Label
    Friend WithEvents labEighth As System.Windows.Forms.Label
    Friend WithEvents labNinth As System.Windows.Forms.Label
    Friend WithEvents labTenth As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.labFirst = New System.Windows.Forms.Label
        Me.labSecond = New System.Windows.Forms.Label
        Me.labFouth = New System.Windows.Forms.Label
        Me.labThird = New System.Windows.Forms.Label
        Me.labFifth = New System.Windows.Forms.Label
        Me.labSixth = New System.Windows.Forms.Label
        Me.labSeventh = New System.Windows.Forms.Label
        Me.labEighth = New System.Windows.Forms.Label
        Me.labNinth = New System.Windows.Forms.Label
        Me.labTenth = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("宋体", 21.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.ForeColor = System.Drawing.Color.Blue
        Me.Label1.Location = New System.Drawing.Point(104, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(224, 40)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "图书借阅前十名"
        '
        'labFirst
        '
        Me.labFirst.Location = New System.Drawing.Point(24, 80)
        Me.labFirst.Name = "labFirst"
        Me.labFirst.Size = New System.Drawing.Size(432, 16)
        Me.labFirst.TabIndex = 1
        '
        'labSecond
        '
        Me.labSecond.Location = New System.Drawing.Point(24, 111)
        Me.labSecond.Name = "labSecond"
        Me.labSecond.Size = New System.Drawing.Size(432, 16)
        Me.labSecond.TabIndex = 1
        '
        'labFouth
        '
        Me.labFouth.Location = New System.Drawing.Point(24, 173)
        Me.labFouth.Name = "labFouth"
        Me.labFouth.Size = New System.Drawing.Size(432, 16)
        Me.labFouth.TabIndex = 1
        '
        'labThird
        '
        Me.labThird.Location = New System.Drawing.Point(24, 142)
        Me.labThird.Name = "labThird"
        Me.labThird.Size = New System.Drawing.Size(432, 16)
        Me.labThird.TabIndex = 1
        '
        'labFifth
        '
        Me.labFifth.Location = New System.Drawing.Point(24, 204)
        Me.labFifth.Name = "labFifth"
        Me.labFifth.Size = New System.Drawing.Size(432, 16)
        Me.labFifth.TabIndex = 1
        '
        'labSixth
        '
        Me.labSixth.Location = New System.Drawing.Point(24, 235)
        Me.labSixth.Name = "labSixth"
        Me.labSixth.Size = New System.Drawing.Size(432, 16)
        Me.labSixth.TabIndex = 1
        '
        'labSeventh
        '
        Me.labSeventh.Location = New System.Drawing.Point(24, 266)
        Me.labSeventh.Name = "labSeventh"
        Me.labSeventh.Size = New System.Drawing.Size(432, 16)
        Me.labSeventh.TabIndex = 1
        '
        'labEighth
        '
        Me.labEighth.Location = New System.Drawing.Point(24, 297)
        Me.labEighth.Name = "labEighth"
        Me.labEighth.Size = New System.Drawing.Size(432, 16)
        Me.labEighth.TabIndex = 1
        '
        'labNinth
        '
        Me.labNinth.Location = New System.Drawing.Point(24, 328)
        Me.labNinth.Name = "labNinth"
        Me.labNinth.Size = New System.Drawing.Size(432, 16)
        Me.labNinth.TabIndex = 1
        '
        'labTenth
        '
        Me.labTenth.Location = New System.Drawing.Point(24, 359)
        Me.labTenth.Name = "labTenth"
        Me.labTenth.Size = New System.Drawing.Size(432, 16)
        Me.labTenth.TabIndex = 1
        '
        'frmCount
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(482, 399)
        Me.Controls.Add(Me.labFirst)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.labSecond)
        Me.Controls.Add(Me.labFouth)
        Me.Controls.Add(Me.labThird)
        Me.Controls.Add(Me.labFifth)
        Me.Controls.Add(Me.labSixth)
        Me.Controls.Add(Me.labSeventh)
        Me.Controls.Add(Me.labEighth)
        Me.Controls.Add(Me.labNinth)
        Me.Controls.Add(Me.labTenth)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog
        Me.MaximizeBox = False
        Me.Name = "frmCount"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "统计排名"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Dim index As Integer = 1
    Private bookdr As System.Data.OleDb.OleDbDataReader

    Private Sub frmCount_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Try
            Dim str As String = "SELECT TOP 10 图书编号, 书名, 借出次数  FROM 图书 ORDER BY 借出次数 DESC"
            OleConn.SelectQuery(str, bookdr)
            While bookdr.Read
                str = CStr(index) & "、 图书编号：" & bookdr.Item("图书编号") & "  书名：" & _
                    bookdr.Item("书名") & "  借出次数：" & bookdr.Item("借出次数")
                Select Case index
                    Case 1
                        labFirst.Text = str
                    Case 2
                        labSecond.Text = str
                    Case 3
                        labThird.Text = str
                    Case 4
                        labFouth.Text = str
                    Case 5
                        labFifth.Text = str
                    Case 6
                        labSixth.Text = str
                    Case 7
                        labSeventh.Text = str
                    Case 8
                        labEighth.Text = str
                    Case 9
                        labNinth.Text = str
                    Case 10
                        labTenth.Text = str
                End Select
                index = index + 1
            End While
            bookdr.Close()
        Catch ex As Exception
            OleConn.DisplayError(ex)
        End Try
    End Sub
End Class