booktypemanage.vb

vb.net写的图书管理系统,功能完备,能正常使用,可用于二次开发.

Public Class BookTypeManage
    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 txtType As System.Windows.Forms.TextBox
    Friend WithEvents btnAdd As System.Windows.Forms.Button
    Friend WithEvents btnDel As System.Windows.Forms.Button
    Friend WithEvents btnClose As System.Windows.Forms.Button
    Friend WithEvents lsbType As System.Windows.Forms.ListBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.txtType = New System.Windows.Forms.TextBox
        Me.btnAdd = New System.Windows.Forms.Button
        Me.btnDel = New System.Windows.Forms.Button
        Me.btnClose = New System.Windows.Forms.Button
        Me.lsbType = New System.Windows.Forms.ListBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(10, 9)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(48, 28)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "种类"
        '
        'txtType
        '
        Me.txtType.Location = New System.Drawing.Point(58, 9)
        Me.txtType.Name = "txtType"
        Me.txtType.Size = New System.Drawing.Size(201, 21)
        Me.txtType.TabIndex = 1
        Me.txtType.Text = ""
        '
        'btnAdd
        '
        Me.btnAdd.Location = New System.Drawing.Point(269, 19)
        Me.btnAdd.Name = "btnAdd"
        Me.btnAdd.Size = New System.Drawing.Size(67, 28)
        Me.btnAdd.TabIndex = 2
        Me.btnAdd.Text = "添加"
        '
        'btnDel
        '
        Me.btnDel.Location = New System.Drawing.Point(269, 65)
        Me.btnDel.Name = "btnDel"
        Me.btnDel.Size = New System.Drawing.Size(67, 28)
        Me.btnDel.TabIndex = 3
        Me.btnDel.Text = "删除"
        '
        'btnClose
        '
        Me.btnClose.Location = New System.Drawing.Point(269, 112)
        Me.btnClose.Name = "btnClose"
        Me.btnClose.Size = New System.Drawing.Size(67, 28)
        Me.btnClose.TabIndex = 4
        Me.btnClose.Text = "退出"
        '
        'lsbType
        '
        Me.lsbType.ItemHeight = 12
        Me.lsbType.Location = New System.Drawing.Point(58, 56)
        Me.lsbType.Name = "lsbType"
        Me.lsbType.Size = New System.Drawing.Size(201, 220)
        Me.lsbType.TabIndex = 5
        '
        'BookTypeManager
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(350, 318)
        Me.Controls.Add(Me.lsbType)
        Me.Controls.Add(Me.btnClose)
        Me.Controls.Add(Me.btnDel)
        Me.Controls.Add(Me.btnAdd)
        Me.Controls.Add(Me.txtType)
        Me.Controls.Add(Me.Label1)
        Me.Name = "BookTypeManager"
        Me.Text = "书籍种类管理"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClose.Click
        Me.Close()
    End Sub

    Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
        '变量定义
        Dim strSQL As String
        Dim ret As Boolean
        '判断类型名称是否为空
        If txtType.Text.Trim = "" Then
            '若是空，给出提示信息并退出
            InfoMSG("类型名称不能为空！")
            Exit Sub
        End If
        '生成新增记录的SQL语句
        strSQL = "Insert into BookType(name ) values('" & txtType.Text.Trim & "')"
        '执行SQL语句
        ret = DBManager.executeNonQuery(strSQL)
        '若成功执行
        If ret Then
            '将输入框清空
            txtType.Text = ""
            '给出提示信息
            InfoMSG("添加成功！")
            '重新加载数据
            DataBinding()
        Else
            '若新增失败，给出提示信息
            ErrorMSG("添加失败！")
        End If
    End Sub

    Private Sub btnDel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDel.Click
        Dim strSQL As String
        Dim ret As Boolean
        '生成删除记录的SQL语句
        strSQL = "delete from  BookType  where code=" & lsbType.SelectedValue & ""
        '执行删除操作
        ret = DBManager.executeNonQuery(strSQL)
        If ret Then
            '如果成功删除，给出提示信息
            InfoMSG("删除成功！")
            '重新加载数据
            DataBinding()
        Else
            '若删除信息失败，给出提示信息
            ErrorMSG("删除失败！")
        End If
    End Sub

    Private Sub BookTypeManager_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        '初始化时加载数据
        DataBinding()
    End Sub

    Private Sub DataBinding()
        '变量定义
        Dim strSQL As String
        Dim myType As DataSet
        '生成SQL语句
        strSQL = "select code,name from booktype "
        '执行SQL语句，取出结果集
        myType = DBManager.executeSelectQuery(strSQL, "booktype")
        '填充信息
        lsbType.DataSource = myType.Tables("booktype")
        lsbType.DisplayMember = "name"
        lsbType.ValueMember = "code"
    End Sub
End Class