frmcatlogue.vb

图书馆管理系统原代码

Imports System
Imports System.Data
Imports System.Drawing
Imports System.Data.OleDb

Public Class frmCatlogue
    Inherits System.Windows.Forms.Form
    Dim sqlstr As String
    Dim Days() As Integer
#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

    '窗体重写处置以清理组件列表。
    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 GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents GroupBox2 As System.Windows.Forms.GroupBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Button4 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.GroupBox1 = New System.Windows.Forms.GroupBox()
        Me.Button4 = New System.Windows.Forms.Button()
        Me.TextBox2 = New System.Windows.Forms.TextBox()
        Me.GroupBox2 = New System.Windows.Forms.GroupBox()
        Me.TextBox1 = New System.Windows.Forms.TextBox()
        Me.ComboBox1 = New System.Windows.Forms.ComboBox()
        Me.Button3 = New System.Windows.Forms.Button()
        Me.Button2 = New System.Windows.Forms.Button()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.GroupBox1.SuspendLayout()
        Me.GroupBox2.SuspendLayout()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.BackColor = System.Drawing.Color.FromArgb(CType(255, Byte), CType(224, Byte), CType(192, Byte))
        Me.GroupBox1.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button4, Me.TextBox2, Me.GroupBox2, Me.Label1})
        Me.GroupBox1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(304, 223)
        Me.GroupBox1.TabIndex = 0
        Me.GroupBox1.TabStop = False
        '
        'Button4
        '
        Me.Button4.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.Button4.ForeColor = System.Drawing.Color.Navy
        Me.Button4.Location = New System.Drawing.Point(216, 48)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(64, 24)
        Me.Button4.TabIndex = 5
        Me.Button4.Text = "编目"
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(112, 24)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(168, 21)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'GroupBox2
        '
        Me.GroupBox2.Controls.AddRange(New System.Windows.Forms.Control() {Me.TextBox1, Me.ComboBox1, Me.Button3, Me.Button2, Me.Button1, Me.Label3, Me.Label2})
        Me.GroupBox2.Location = New System.Drawing.Point(8, 80)
        Me.GroupBox2.Name = "GroupBox2"
        Me.GroupBox2.Size = New System.Drawing.Size(288, 136)
        Me.GroupBox2.TabIndex = 3
        Me.GroupBox2.TabStop = False
        Me.GroupBox2.Text = "图书类别信息"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(104, 72)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(168, 21)
        Me.TextBox1.TabIndex = 7
        Me.TextBox1.Text = ""
        '
        'ComboBox1
        '
        Me.ComboBox1.Location = New System.Drawing.Point(104, 32)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(168, 20)
        Me.ComboBox1.TabIndex = 6
        '
        'Button3
        '
        Me.Button3.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.Button3.ForeColor = System.Drawing.Color.Navy
        Me.Button3.Location = New System.Drawing.Point(232, 104)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(48, 24)
        Me.Button3.TabIndex = 5
        Me.Button3.Text = "更新"
        '
        'Button2
        '
        Me.Button2.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.Button2.ForeColor = System.Drawing.Color.Navy
        Me.Button2.Location = New System.Drawing.Point(176, 104)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(48, 24)
        Me.Button2.TabIndex = 4
        Me.Button2.Text = "删除"
        '
        'Button1
        '
        Me.Button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.Button1.ForeColor = System.Drawing.Color.Navy
        Me.Button1.Location = New System.Drawing.Point(120, 104)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(48, 24)
        Me.Button1.TabIndex = 3
        Me.Button1.Text = "添加"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(8, 69)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(96, 24)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "借阅天数"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(8, 28)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(96, 24)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "图书类别"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(8, 21)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(96, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "图书 ISBN 号"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'frmCatlogue
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(304, 223)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.GroupBox1})
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.Name = "frmCatlogue"
        Me.Text = "图书编目管理"
        Me.GroupBox1.ResumeLayout(False)
        Me.GroupBox2.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub frmCatlogue_Load(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles MyBase.Load
        LoadData()
    End Sub

    Public Sub LoadData()
        Dim count As Integer
        Dim i As Integer
        sqlstr = "SELECT * FROM BorrowType "
        Dim ds As New DataSet()
        ds.Clear()
        ds = GetDataFromDB(sqlstr)
        If Not ds Is Nothing Then
            count = ds.Tables(0).Rows.Count
            ReDim Days(count)
            Me.ComboBox1.Items.Clear()
            For i = 0 To count - 1
                Dim temp As BorrowType
                temp.Type = Trim(ds.Tables(0).Rows(i)("Type"))
                temp.Days = CInt(Val(ds.Tables(0).Rows(i)("BorrowDays")))
                Me.ComboBox1.Items.Add(temp.Type)
                Days(i) = temp.Days
            Next
        End If
    End Sub

    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
        Dim i As Integer
        i = Me.ComboBox1.SelectedIndex
        If i < 0 Then
            Exit Sub
        End If
        Me.TextBox1.Text = Days(i)
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button4.Click
        Dim isbn As String
        Dim type As String
        type = Me.ComboBox1.Text
        isbn = Trim(Me.TextBox2.Text)
        If isbn = "" Then
            Exit Sub
        End If
        sqlstr = "SELECT * FROM BookInfo WHERE ISBN='" & isbn & "'"
        Dim ds As New DataSet()
        ds.Clear()
        ds = GetDataFromDB(sqlstr)
        If Not ds Is Nothing Then
            MsgBox("对不起，没有该图书信息。", _
            MsgBoxStyle.OKOnly + MsgBoxStyle.Critical, "图书不存在")
            Exit Sub
        End If
        sqlstr = "UPDATE BookInfo SET Type='" & type & "' WHERE ISBN='" & isbn & "'"
        If UpdateDataBase(sqlstr) = True Then
            MsgBox("祝贺你，图书编目成功。", MsgBoxStyle.OKOnly + _
            MsgBoxStyle.Information, "编目成功")
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
        Dim type As New BorrowType()
        type.Days = CInt(Val(Me.ComboBox1.SelectedItem))
        type.Type = Trim(Me.ComboBox1.Text)
        sqlstr = "INSERT INTO BorrowType (Type,BorrowDays) VALUES " & _
        "('" & type.Type & "','" & type.Days & "') "
        UpdateDataBase(sqlstr)
        LoadData()
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button2.Click
        Dim type As String = Trim(Me.ComboBox1.SelectedItem)
        sqlstr = "DELETE FROM BorrowType WHERE Type='" & type & "'"
        UpdateDataBase(sqlstr)
        LoadData()
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button3.Click
        Dim type As String = Trim(Me.ComboBox1.SelectedItem)
        Dim days As Integer = CInt(Val(Me.TextBox1.Text))
        sqlstr = "UPDATE BorrowType SET BorrowDays = " & _
        "'" & days & "' WHERE Type='" & type & "'"
        UpdateDataBase(sqlstr)
        LoadData()
    End Sub
End Class