Display Your Web Favorite Collection
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Configuration
Imports System.Resources
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.IO
Imports System.Drawing.Printing
Public Class MainClass
Shared Sub Main()
Dim myform As Form = New Form1()
Application.Run(myform)
End Sub
End Class
Public Class WebFavoriteCollection
Inherits CollectionBase
Public Sub Add(ByVal Favorite As WebFavorite)
'Add item to the collection
List.Add(Favorite)
End Sub
Public Sub Remove(ByVal Index As Integer)
'Remove item from collection
If Index >= 0 And Index < Count Then
List.Remove(Index)
End If
End Sub
Public ReadOnly Property Item(ByVal Index As Integer) As WebFavorite
Get
'Get an item from the collection by its index
Return CType(List.Item(Index), WebFavorite)
End Get
End Property
End Class
Public Class Favorites
Implements IDisposable
Private disposed As Boolean = False
' IDisposable
Private Overloads Sub Dispose(ByVal disposing As Boolean)
If Not Me.disposed Then
If disposing Then
' TODO: put code to dispose managed resources
End If
' TODO: put code to free unmanaged resources here
End If
Me.disposed = True
End Sub
#Region " IDisposable Support "
' This code added by Visual Basic to correctly implement the disposable pattern.
Public Overloads Sub Dispose() Implements IDisposable.Dispose
' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above.
Dispose(True)
GC.SuppressFinalize(Me)
End Sub
Protected Overrides Sub Finalize()
' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above.
Dispose(False)
MyBase.Finalize()
End Sub
#End Region
'Public member
Public FavoritesCollection As WebFavoriteCollection
Public ReadOnly Property FavoritesFolder() As String
Get
'Return the path to the user's Favorites folder
Return Environment.GetFolderPath( _
Environment.SpecialFolder.Favorites)
End Get
End Property
Public Sub ScanFavorites()
'Scan the Favorites folder
ScanFavorites(FavoritesFolder)
End Sub
Public Sub ScanFavorites(ByVal folderName As String)
'If the FavoritesCollection member has not been instantiated
'then instaniate it
If FavoritesCollection Is Nothing Then
FavoritesCollection = New WebFavoriteCollection
End If
'Process each file in the Favorites folder
For Each strFile As String In _
My.Computer.FileSystem.GetFiles(folderName)
'If the file has a url extension...
If strFile.EndsWith(".url", True, Nothing) Then
Try
'Create and use a new instanace of the
'WebFavorite class
Using objWebFavorite As New WebFavorite
'Load the file information
objWebFavorite.Load(strFile)
'Add the object to the collection
FavoritesCollection.Add(objWebFavorite)
End Using
Catch ExceptionErr As Exception
'Return the exception to the caller
Throw New Exception(ExceptionErr.Message)
End Try
End If
Next
End Sub
End Class
Public Class WebFavorite
Implements IDisposable
Private disposed As Boolean = False
' IDisposable
Private Overloads Sub Dispose(ByVal disposing As Boolean)
If Not Me.disposed Then
If disposing Then
' TODO: put code to dispose managed resources
End If
' TODO: put code to free unmanaged resources here
End If
Me.disposed = True
End Sub
#Region " IDisposable Support "
' This code added by Visual Basic to correctly implement the disposable pattern.
Public Overloads Sub Dispose() Implements IDisposable.Dispose
' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above.
Dispose(True)
GC.SuppressFinalize(Me)
End Sub
Protected Overrides Sub Finalize()
' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above.
Dispose(False)
MyBase.Finalize()
End Sub
#End Region
'Public Members
Public Name As String
Public Url As String
Public Sub Load(ByVal fileName As String)
'Declare variables
Dim strData As String
Dim strLines() As String
Dim strLine As String
Dim objFileInfo As New FileInfo(fileName)
'Set the Name member to the file name minus the extension
Name = objFileInfo.Name.Substring(0, _
objFileInfo.Name.Length - objFileInfo.Extension.Length)
Try
'Read the entire contents of the file
strData = My.Computer.FileSystem.ReadAllText(fileName)
'Split the lines of data in the file
strLines = strData.Split(New String() {ControlChars.CrLf}, _
StringSplitOptions.RemoveEmptyEntries)
'Process each line looking for the URL
For Each strLine In strLines
'Does the line of data start with URL=
If strLine.StartsWith("URL=") Then
'Yes, set the Url member to the actual URL
Url = strLine.Substring(4)
'Exit the For...Next loop
Exit For
End If
Next
Catch IOExceptionErr As IOException
'Return the exception to the caller
Throw New Exception(IOExceptionErr.Message)
End Try
End Sub
End Class
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Me.Load
Try
'Create and use a new instanace of the Favorites class
Using objFavorites As New Favorites
'Scan the Favorites folder
objFavorites.ScanFavorites()
'Process each objWebFavorite object in the
'favorites collection
For Each objWebFavorite As WebFavorite In _
objFavorites.FavoritesCollection
'Declare a ListViewItem object
Dim objListViewItem As New ListViewItem
'Set the properties of the ListViewItem object
objListViewItem.Text = objWebFavorite.Name
objListViewItem.SubItems.Add(objWebFavorite.Url)
'Add the ListViewItem object to the ListView
lstFavorites.Items.Add(objListViewItem)
Next
End Using
Catch ExceptionErr As Exception
'Display the error
MessageBox.Show(ExceptionErr.Message, "Favorites Viewer", _
MessageBoxButtons.OK, MessageBoxIcon.Warning)
End Try
End Sub
Private Sub lstFavorites_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles lstFavorites.Click
'Update the link label control Text property
lnkUrl.Text = "Visit " & lstFavorites.SelectedItems.Item(0).Text
'Clear the default hyperlink
lnkUrl.Links.Clear()
'Add the selected hyperlink to the LinkCollection
lnkUrl.Links.Add(6, lstFavorites.SelectedItems.Item(0).Text.Length, _
lstFavorites.SelectedItems.Item(0).SubItems(1).Text)
End Sub
Private Sub lnkUrl_LinkClicked(ByVal sender As Object, _
ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) _
Handles lnkUrl.LinkClicked
'Process the selected link
' Process.Start(e.Link.LinkData)
End Sub
End Class
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Public Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.lstFavorites = New System.Windows.Forms.ListView
Me.hdrName = New System.Windows.Forms.ColumnHeader
Me.hdrUrl = New System.Windows.Forms.ColumnHeader
Me.lnkUrl = New System.Windows.Forms.LinkLabel
Me.SuspendLayout()
'
'lstFavorites
'
Me.lstFavorites.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me.lstFavorites.Columns.AddRange(New System.Windows.Forms.ColumnHeader() {Me.hdrName, Me.hdrUrl})
Me.lstFavorites.Location = New System.Drawing.Point(0, 0)
Me.lstFavorites.Name = "lstFavorites"
Me.lstFavorites.Size = New System.Drawing.Size(457, 223)
Me.lstFavorites.TabIndex = 0
Me.lstFavorites.View = System.Windows.Forms.View.Details
'
'hdrName
'
Me.hdrName.Text = "Name"
Me.hdrName.Width = 250
'
'hdrUrl
'
Me.hdrUrl.Text = "URL"
Me.hdrUrl.Width = 250
'
'lnkUrl
'
Me.lnkUrl.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me.lnkUrl.AutoSize = True
Me.lnkUrl.Location = New System.Drawing.Point(0, 231)
Me.lnkUrl.Name = "lnkUrl"
Me.lnkUrl.Size = New System.Drawing.Size(55, 13)
Me.lnkUrl.TabIndex = 1
Me.lnkUrl.TabStop = True
Me.lnkUrl.Text = "LinkLabel1"
Me.lnkUrl.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(456, 253)
Me.Controls.Add(Me.lnkUrl)
Me.Controls.Add(Me.lstFavorites)
Me.Name = "Form1"
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
Me.Text = "My Favorites"
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents lstFavorites As System.Windows.Forms.ListView
Friend WithEvents hdrName As System.Windows.Forms.ColumnHeader
Friend WithEvents hdrUrl As System.Windows.Forms.ColumnHeader
Friend WithEvents lnkUrl As System.Windows.Forms.LinkLabel
End Class
Related examples in the same category
