VB编程技巧:比较两个文件
时 间:2008-05-21 08:53:29
作 者:UMVSOFT整理 ID:16 城市:江阴
摘 要:VB编程技巧:比较两个文件
正 文:
比较两个文件 Function CompFile(F1 As String, F2 As String) As Boolean Dim issame As Boolean Open F1 For Binary As #1 Open F2 For Binary As #2 issame = True If LOF(1) <> LOF(2) Then issame = False Else whole& = LOF(1) \ 10000 'number of whole 10,000 byte chunks part& = LOF(1) Mod 10000 'remaining bytes at end of file buffer1$ = String$(10000, 0) buffer2$ = String$(10000, 0) start& = 1 For x& = 1 To whole& 'this for-next loop will get 10,000 Get #1, start&, buffer1$ 'byte chunks at a time. Get #2, start&, buffer2$ If buffer1$ <> buffer2$ Then issame = False Exit For End If start& = start& + 10000 Next buffer1$ = String$(part&, 0) buffer2$ = String$(part&, 0) Get #1, start&, buffer1$ 'get the remaining bytes at the end Get #2, start&, buffer2$ 'get the remaining bytes at the end If buffer1$ <> buffer2$ Then issame = False End If Close CompFile = issame End Function
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