Imports ICSharpCode.SharpZipLib.Zip

Public Class Form1

	' ************************************************************
	' 初期処理
	' ************************************************************
	Sub New()

		' この呼び出しは、Windows フォーム デザイナで必要です。
		InitializeComponent()

		' InitializeComponent() 呼び出しの後で初期化を追加します。
		Me.StartPosition = FormStartPosition.Manual
		Me.Left = 0
		Me.Top = 0
		Me.Width = 900
		Me.Height = 600

		Me.LboxGrid1.UseParentFitForm = Me
		Me.LboxGrid1.AllowDrop = True
		Me.LboxGrid1.RowHeadersWidth = 50

		Me.LboxGrid1.AddColumn("NAME", "名称")
		Me.LboxGrid1.AddColumn("SIZE", "サイズ")
		Me.LboxGrid1.AddColumn("SIZE2", "圧縮サイズ")
		Me.LboxGrid1.AddColumn("DATE", "日付")
		Me.LboxGrid1.AddColumn("PATH", "パス")

	End Sub

	' ************************************************************
	' ドラッグ・ドロップ対象拡張子
	' ************************************************************
	Private Sub LboxGrid1_DragEnter(ByVal sender As System.Object, _
	ByVal e As System.Windows.Forms.DragEventArgs) Handles LboxGrid1.DragEnter

		' ファイルのパスを(複数)取得
		Dim target As String() = CType(e.Data.GetData(DataFormats.FileDrop, False), String())

		' 拡張子を分解
		Dim ext As String = System.IO.Path.GetExtension(target(0))
		ext = ext.ToUpper()

		' 拡張子が ZIP で無ければ許可しない
		If ext = ".ZIP" Then
			e.Effect = DragDropEffects.Move
		Else
			e.Effect = DragDropEffects.None
		End If


	End Sub

	' ************************************************************
	' ドラッグ・ドロップ
	' ************************************************************
	Private Sub LboxGrid1_DragDrop(ByVal sender As System.Object, _
	ByVal e As System.Windows.Forms.DragEventArgs) Handles LboxGrid1.DragDrop

		' ファイルのパスを(複数)取得
		Dim target As String() = CType(e.Data.GetData(DataFormats.FileDrop, False), String())
		' 複数選択されていても、先頭のファイル

		ListZipFile(target(0))

	End Sub

	' ************************************************************
	' 一覧
	' ************************************************************
	Private Sub ListZipFile(ByVal Path As String)

		Me.Text = Path

		Dim zipFile As New ZipFile(Path)

		Me.Cursor = Cursors.WaitCursor
		Me.Enabled = False

		Me.LboxGrid1.Clear()

		Dim max As Integer = 100
		Dim cnt As Integer = 0

		For i As Integer = 0 To zipFile.Count - 1
			Dim target As ZipEntry = zipFile(i)
			If target.IsFile Then
				cnt += 1
				If cnt > max Then
					Exit For
				End If

				Me.LboxGrid1.AddRow()
				Me.LboxGrid1.SetRowHeaderText(cnt.ToString().Trim())
				Me.LboxGrid1.SetColumnText("NAME", System.IO.Path.GetFileName(target.Name))
				Me.LboxGrid1.SetColumnText("SIZE", target.Size.ToString())
				Me.LboxGrid1.SetColumnText("SIZE2", target.CompressedSize.ToString())
				Me.LboxGrid1.SetColumnText("DATE", target.DateTime.ToString())
				Me.LboxGrid1.SetColumnText("PATH", target.Name)

			End If
		Next

		zipFile.Close()

		Me.Enabled = True
		Me.Cursor = Cursors.Default

	End Sub

End Class