vb如果存在该文件就删除它
vb如何实现 监控某个文件 如果存在就删除它? 谢谢!
推荐回答(3个)
Vb删除文件到回收站代码文件:
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VERSION 5.00
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Begin VB.Form Form1
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Caption = "将文件删除到回收站"
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ClientHeight = 3585
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ClientLeft = 60
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ClientTop = 345
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ClientWidth = 5445
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LinkTopic = "Form1"
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ScaleHeight = 3585
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ScaleWidth = 5445
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StartUpPosition = 3 '窗口缺省
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Begin VB.CommandButton Command1
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Caption = "删除到回收站"
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Height = 450
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Left = 3885
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TabIndex = 4
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Top = 3060
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Width = 1365
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End
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Begin VB.Frame Frame1
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Height = 3015
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Left = 0
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TabIndex = 0
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Top = 0
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Width = 5430
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Begin VB.FileListBox File1
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Height = 2610
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Left = 2595
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TabIndex = 3
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Top = 240
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Width = 2715
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End
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Begin VB.DirListBox Dir1
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Height = 2190
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Left = 60
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TabIndex = 2
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Top = 660
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Width = 2475
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End
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Begin VB.DriveListBox Drive1
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Height = 300
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Left = 90
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TabIndex = 1
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Top = 255
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Width = 2490
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End
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End
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End
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Attribute VB_Name = "Form1"
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Attribute VB_GlobalNameSpace = False
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Attribute VB_Creatable = False
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Attribute VB_PredeclaredId = True
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Attribute VB_Exposed = False
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Option Explicit
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Private Declare Function SHFileOperation Lib _
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"shell32.dll" Alias "SHFileOperationA" (lpFileOp _
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As SHFILEOPSTRUCT) As Long '删除到回收站
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Private Const FO_DELETE = &H3
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Private Const FOF_ALLOWUNDO = &H40
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Private Type SHFILEOPSTRUCT
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hwnd As Long
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wFunc As Long
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pFrom As String
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pTo As String
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fFlags As Integer
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fAnyOperationsAborted As Long
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hNameMappings As Long
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lpszProgressTitle As Long
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End Type
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Private Sub Command1_Click()
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Dim SHop As SHFILEOPSTRUCT
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Dim strfile As String
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If File1.FileName <> "" Then
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strfile = IIf(Right(File1.Path, 1) = "\", File1.Path, File1.Path & "\")
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strfile = strfile & File1.FileName
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Else
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strfile = Dir1.List(Dir1.ListIndex)
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End If
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With SHop
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.wFunc = FO_DELETE
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.pFrom = strfile
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.fFlags = FOF_ALLOWUNDO
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End With
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SHFileOperation SHop
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File1.Refresh
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Dir1.Refresh
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End Sub
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Private Sub Dir1_Change()
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File1.Path = Dir1.Path
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End Sub
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Private Sub Drive1_Change()
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Dir1.Path = Drive1.Drive
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End Sub
先用File来判断该文件是否存在:fileexits(),然后delete就可以了,相关语句及用法,可以查看windows api中的文件操作部分!
dim strfile as string
dim filepath as string ''为监控的文件全路径
strfile = dir(filepath,vbnormal)
if strfile <> "" then kill filepath
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