form1.vb

Source code for VB.NET book - Chapter 4

Public Class Form1
    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 DriveListBox1 As Microsoft.VisualBasic.Compatibility.VB6.DriveListBox
    Friend WithEvents DirListBox1 As Microsoft.VisualBasic.Compatibility.VB6.DirListBox
    Friend WithEvents FileListBox1 As Microsoft.VisualBasic.Compatibility.VB6.FileListBox
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DriveListBox1 = New Microsoft.VisualBasic.Compatibility.VB6.DriveListBox
        Me.DirListBox1 = New Microsoft.VisualBasic.Compatibility.VB6.DirListBox
        Me.FileListBox1 = New Microsoft.VisualBasic.Compatibility.VB6.FileListBox
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.SuspendLayout()
        '
        'DriveListBox1
        '
        Me.DriveListBox1.Location = New System.Drawing.Point(16, 8)
        Me.DriveListBox1.Name = "DriveListBox1"
        Me.DriveListBox1.Size = New System.Drawing.Size(120, 21)
        Me.DriveListBox1.TabIndex = 0
        '
        'DirListBox1
        '
        Me.DirListBox1.IntegralHeight = False
        Me.DirListBox1.Location = New System.Drawing.Point(16, 40)
        Me.DirListBox1.Name = "DirListBox1"
        Me.DirListBox1.Size = New System.Drawing.Size(120, 112)
        Me.DirListBox1.TabIndex = 1
        '
        'FileListBox1
        '
        Me.FileListBox1.Location = New System.Drawing.Point(16, 168)
        Me.FileListBox1.Name = "FileListBox1"
        Me.FileListBox1.Pattern = "*.jpg"
        Me.FileListBox1.Size = New System.Drawing.Size(120, 134)
        Me.FileListBox1.TabIndex = 2
        '
        'PictureBox1
        '
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Right
        Me.PictureBox1.Location = New System.Drawing.Point(160, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(376, 310)
        Me.PictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage
        Me.PictureBox1.TabIndex = 3
        Me.PictureBox1.TabStop = False
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(536, 310)
        Me.Controls.Add(Me.PictureBox1)
        Me.Controls.Add(Me.FileListBox1)
        Me.Controls.Add(Me.DirListBox1)
        Me.Controls.Add(Me.DriveListBox1)
        Me.Name = "Form1"
        Me.Text = "浏览图片"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub DirListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DirListBox1.SelectedIndexChanged
        FileListBox1.Path = DirListBox1.Path
    End Sub

    Private Sub DriveListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DriveListBox1.SelectedIndexChanged
        DirListBox1.Path = DriveListBox1.Drive
    End Sub

    Private Sub FileListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FileListBox1.SelectedIndexChanged
        PictureBox1.Image = Image.FromFile(FileListBox1.Path + "\" + FileListBox1.SelectedItem.ToString())
    End Sub
End Class