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有时候我们需要删除文本文件的指定的一行内容，下面是具体的函数

Delete Line Function

代码如下:

Function DeleteLine(strFile, strKey, LineNumber, CheckCase)

'DeleteLine Function by TomRiddle 2008

'Remove line(s) containing text (strKey) from text file (strFile)

'or

'Remove line number from text file (strFile)

'or

'Remove line number if containing text (strKey) from text file (strFile)

'Use strFile = "c:\file.txt" (Full path to text file)

'Use strKey = "John Doe" (Lines containing this text string to be deleted)

'Use strKey = "" (To not use keyword search)

'Use LineNumber = "1" (Enter specific line number to delete)

'Use LineNumber = "0" (To ignore line numbers)

'Use CheckCase = "1" (For case sensitive search )

'Use CheckCase = "0" (To ignore upper/lower case characters)

Const ForReading=1:Const ForWriting=2

Dim objFSO,objFile,Count,strLine,strLineCase,strNewFile

Set objFSO=CreateObject("Scripting.FileSystemObject")

Set objFile=objFSO.OpenTextFile(strFile,ForReading)

Do Until objFile.AtEndOfStream

strLine=objFile.Readline

If CheckCase=0 then strLineCase=ucase(strLine):strKey=ucase(strKey)

If LineNumber=objFile.Line-1 or LineNumber=0 then

If instr(strLine,strKey) or instr(strLineCase,strkey) or strKey="" then

strNewFile=strNewFile

Else

strNewFile=strNewFile&strLine&vbcrlf

End If

Else

strNewFile=strNewFile&strLine&vbcrlf

End If

Loop

objFile.Close

Set objFSO=CreateObject("Scripting.FileSystemObject")

Set objFile=objFSO.OpenTextFile(strFile,ForWriting)

objFile.Write strNewFile

objFile.Close

End Function

使用方法：

DeleteLine "c:\1.txt", "", 1, 0