readselect.vb

图书管理系统 书籍的管理应用 源码可以直接用

Public Class ReadSelect
    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

    Public Sub New(ByVal borrowManage As BorrowManage)
        MyBase.New()
        Me.myBorrowManage = borrowManage
        '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 btnCancel As System.Windows.Forms.Button
    Friend WithEvents btnSelect As System.Windows.Forms.Button
    Friend WithEvents lsbReader As System.Windows.Forms.ListBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.btnSelect = New System.Windows.Forms.Button
        Me.btnCancel = New System.Windows.Forms.Button
        Me.lsbReader = New System.Windows.Forms.ListBox
        Me.SuspendLayout()
        '
        'btnSelect
        '
        Me.btnSelect.Location = New System.Drawing.Point(32, 248)
        Me.btnSelect.Name = "btnSelect"
        Me.btnSelect.Size = New System.Drawing.Size(56, 24)
        Me.btnSelect.TabIndex = 0
        Me.btnSelect.Text = "选择"
        '
        'btnCancel
        '
        Me.btnCancel.Location = New System.Drawing.Point(136, 248)
        Me.btnCancel.Name = "btnCancel"
        Me.btnCancel.Size = New System.Drawing.Size(56, 24)
        Me.btnCancel.TabIndex = 1
        Me.btnCancel.Text = "关闭"
        '
        'lsbReader
        '
        Me.lsbReader.ItemHeight = 12
        Me.lsbReader.Location = New System.Drawing.Point(10, 9)
        Me.lsbReader.Name = "lsbReader"
        Me.lsbReader.Size = New System.Drawing.Size(201, 232)
        Me.lsbReader.TabIndex = 2
        '
        'ReadSelect
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(220, 277)
        Me.Controls.Add(Me.lsbReader)
        Me.Controls.Add(Me.btnCancel)
        Me.Controls.Add(Me.btnSelect)
        Me.Name = "ReadSelect"
        Me.Text = "读者选择"
        Me.ResumeLayout(False)

    End Sub

#End Region
    '用于和借阅管理窗体建立关联
    Private myBorrowManage As BorrowManage
    Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
        Me.Close()
    End Sub

    Private Sub btnSelect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSelect.Click
        '选择读者  
        doSelect()
    End Sub

    Private Sub ReadSelect_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim strSQL As String
        Dim mydet As New DataSet
        '生成SQL语句
        strSQL = "Select distinct Name from ReaderInfo order by Name "
        '执行SQL语句，取出结果集
        mydet = DBManager.executeSelectQuery(strSQL, "Readers")
        '若结果集为空，退出
        If mydet Is Nothing OrElse mydet.Tables(0).Rows.Count = 0 Then
            Exit Sub
        End If
        '加载数据
        lsbReader.DataSource = mydet.Tables("Readers")
        lsbReader.DisplayMember = "Name"
        lsbReader.ValueMember = "Name"
    End Sub

    Sub doSelect()
        '设置读者信息
        myBorrowManage.setReader(lsbReader.SelectedValue)
        '退出
        Me.Close()
    End Sub
    Private Sub lsbReader_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lsbReader.DoubleClick
        '选择读者
        doSelect()
    End Sub
End Class