frmmain.vb

自己编的zip压缩工具。以供大家参考

        AddFileToArchive()

    End Sub


    Private Sub btnExtract_Click(ByVal sender As System.Object, _
                                 ByVal e As System.EventArgs) Handles btnExtract.Click

        ExtractArchive()

    End Sub

#End Region    'ToolStrip


    Private Sub ListView1_SelectedIndexChanged(ByVal sender As System.Object, _
                                           ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged
        Dim s As String = "s"
        If Me.ListView1.SelectedItems.Count = 1 Then _
            s = ""

        Me.lblFeedback.Text = String.Format("Selected {0} file{1}", Me.ListView1.SelectedItems.Count, s)

    End Sub


#End Region    'Control Events

#End Region    'Events


#Region " Methods"

    Private Sub NewArchive()

        Dim diag As SaveFileDialog = Dialogs.GetSaveFileDialog()
        With diag

            Dim result As DialogResult = .ShowDialog()
            If result = Windows.Forms.DialogResult.OK Then

                'Clear items from ListView
                Me.ListView1.Items.Clear()

                'Delete the selected file if it exits.
                If My.Computer.FileSystem.FileExists(.FileName) = True Then _
                    My.Computer.FileSystem.DeleteFile(.FileName)

                'Store the selected file.
                mCurrentZip = .FileName

                EnableControls(True)

            End If

        End With

        diag.Dispose()

        Me.lblFeedback.Text = ""

    End Sub


    Private Sub AddFileToArchive()

        Dim archFile As ArchiveFile = Nothing
        Dim diag As OpenFileDialog = Dialogs.GetOpenFileDialog(False)

        With diag

            .ShowDialog()

            For Each filePath As String In .FileNames

                'Add to Zip Archive
                archFile = AddFileToZip(filePath)

                'Get Icon and add to image list
                Dim ico As System.Drawing.Icon = Shell32.GetIcon(archFile.Name)

                'Add the image to the list if it's not already in it
                If Me.imgLstFiles.Images.ContainsKey(archFile.Type) = False Then _
                    Me.imgLstFiles.Images.Add(archFile.Type, ico)

                'Add to ListView
                Dim item As New ListViewItem(archFile.Name)
                item.ImageKey = archFile.Type
                item.Tag = archFile.Uri.ToString()  'store the Uri in the Tag.

                With item.SubItems
                    .Add(archFile.Type)
                    .Add(archFile.Modified.ToString())
                End With

                Me.ListView1.Items.Add(item)

            Next

        End With

    End Sub


    Private Sub DeleteFileFromArchive()

        'Items cannot be removed from a collection when in a iteration, 
        '  so build a list for all items to be removed
        Dim itemsToRemove As New List(Of ListViewItem)

        'Open the zip file
        Dim zip As Package = ZipPackage.Open(mCurrentZip, IO.FileMode.OpenOrCreate, IO.FileAccess.ReadWrite)

        'Loop through each item in the ListView
        For Each item As ListViewItem In Me.ListView1.Items

            'If the item is selected, then remove it
            If Me.ListView1.SelectedItems.Contains(item) = True Then
                itemsToRemove.Add(item)  'Add to removal list

                Dim partUri As New Uri(item.Tag.ToString(), System.UriKind.Relative)

                zip.DeletePart(partUri)

            End If

        Next

        'Remove items from ListView
        For Each item As ListViewItem In itemsToRemove
            Me.ListView1.Items.Remove(item)
        Next

        'Close Zip
        zip.Close()

    End Sub


    Private Sub EnableControls(ByVal enable As Boolean)

        Me.btnAdd.Enabled = enable
        Me.btnExtract.Enabled = enable
        Me.mnuActionsAdd.Enabled = enable
        Me.mnuActionsDelete.Enabled = enable
        Me.mnuActionsExtract.Enabled = enable

    End Sub


    Private Sub ExtractArchive()

        Dim folder As String = String.Empty

        Dim diag As New FolderBrowserDialog()
        With diag
            .Description = "Please select a folder to extract the current archive to."
            .RootFolder = Environment.SpecialFolder.MyComputer
            .ShowNewFolderButton = True

            Dim result As DialogResult = .ShowDialog()
            If result = Windows.Forms.DialogResult.OK Then _
                folder = diag.SelectedPath

        End With

        If folder <> String.Empty Then

            'extract archive to folder
            'Open the zip file
            Dim zip As Package = ZipPackage.Open(mCurrentZip, IO.FileMode.OpenOrCreate, IO.FileAccess.ReadWrite)

            Dim pkgPart As PackagePart = Nothing


            'Only Export selected items
            For Each item As ListViewItem In Me.ListView1.Items

                'If the item is selected, then export it.
                '  If no items are selected, then export all of them.
                If item.Selected = True OrElse _
                    Me.ListView1.SelectedItems.Count = 0 Then

                    'The Uri is stored in the Tag of the ListViewItem,
                    '  so retrieve it now and use it to get the part
                    Dim partUri As Uri = New Uri(item.Tag.ToString(), System.UriKind.Relative)
                    pkgPart = zip.GetPart(partUri)

                    'Gets the complete path without the leading "/"
                    Dim fileName As String = pkgPart.Uri.OriginalString.Substring(1)

                    'The psmdcp is a file containing meta-data for the package properties
                    '  The _rels file contains the package relationships
                    '  skip both of them.
                    If IO.Path.GetExtension(fileName) = ".psmdcp" OrElse _
                        fileName.IndexOf("_rels") > -1 Then _
                            Continue For

                    Dim stream As Stream = pkgPart.GetStream()

                    'Read all of the bytes from the file to add to the zip file
                    Dim bites(CInt(stream.Length - 1)) As Byte
                    stream.Read(bites, 0, bites.Length)

                    fileName = fileName.Replace("_", " ")  'replace underscore with space
                    File.WriteAllBytes(String.Concat(folder, "\", fileName), bites)

                End If

            Next

            zip.Close()

        End If


    End Sub


    Private Sub Favorites()

        Dim frm As New frmFavorites()
        AddHandler frm.LoadFavorite, AddressOf LoadArchive
        frm.ShowDialog()

        frm.Dispose()

    End Sub


    Private Sub OpenArchive()

        Dim diag As OpenFileDialog = Dialogs.GetOpenFileDialog(True)

        With diag

            Dim result As DialogResult = .ShowDialog()

            If result = Windows.Forms.DialogResult.OK AndAlso _
                .FileName <> "" Then

                LoadArchive(.FileName)

            End If

        End With

        'select 1st item
        If Me.ListView1.Items.Count > 0 Then _
            Me.ListView1.Items(0).Selected = True

    End Sub


    'Set the images for all controls
    Private Sub SetImages()

        'Set ToolStrip Button Images
        Me.btnNew.Image = Me.imgLstTsMenus.Images("NewFolder.png")
        Me.btnOpen.Image = Me.imgLstTsMenus.Images("OpenFolder.png")
        Me.btnFavorites.Image = Me.imgLstTsMenus.Images("Favorites.png")
        Me.btnAdd.Image = Me.imgLstTsMenus.Images("Add.png")
        Me.btnExtract.Image = Me.imgLstTsMenus.Images("Extract.png")

        'Set MenuStrip Button Images
        Me.mnuFileNew.Image = Me.imgLstMsMenu.Images("NewFolder.png")
        Me.mnuFileOpen.Image = Me.imgLstMsMenu.Images("OpenFolder.png")
        Me.mnuFileFavorites.Image = Me.imgLstMsMenu.Images("Favorites.png")
        Me.mnuActionsAdd.Image = Me.imgLstMsMenu.Images("Add.png")
        Me.mnuActionsDelete.Image = Me.imgLstMsMenu.Images("Remove.png")
        Me.mnuActionsExtract.Image = Me.imgLstMsMenu.Images("Extract.png")

    End Sub

#End Region

#End Region    'Infrastructure


End Class