vb删除txt中的多余的文本
文本内容如下所示：
INPUT 11
NAME "" LABEL 0.00 0.00
LINK 17 Q 545.000 COMPOSITION 1
TIME FROM 600.0 UNTIL 1200.0

INPUT 12
NAME "" LABEL 0.00 0.00
LINK 18 Q 352.000 COMPOSITION 2
TIME FROM 600.0 UNTIL 1200.0

INPUT
NAME "" LABEL 0.00 0.00
LINK Q COMPOSITION
TIME FROM UNTIL

INPUT
NAME "" LABEL 0.00 0.00
LINK Q COMPOSITION
TIME FROM UNTIL

INPUT
NAME "" LABEL 0.00 0.00
LINK Q COMPOSITION
TIME FROM UNTIL

想把INPUT 12
NAME "" LABEL 0.00 0.00
LINK 18 Q 352.000 COMPOSITION 2
TIME FROM 600.0 UNTIL 1200.0
该段之后的3段，INPUT
NAME "" LABEL 0.00 0.00
LINK Q COMPOSITION
TIME FROM UNTIL
删除，请指点给出代码，万分感谢，，！

Private Sub Command1_Click()
Dim strLine As String, strTemp As String

Open "c:\test\a.txt" For Input As #1
Open "c:\test\temp.txt" For Output As #2
Do Until EOF(1)
Line Input #1, strLine

If Left(Trim(strLine), Len(strPatern)) = strPatern Then
Do While Left(Trim(strLine), Len(strBlockHeader)) <> strBlockHeader
Print #2, strLine
Line Input #1, strLine
Loop

GoTo ExitSub
End If

Print #2, strLine
Loop

ExitSub:
Close #2
Close #1

Kill "c:\test\a.txt"
Name "c:\test\temp.txt" As "c:\test\a.txt"
End Sub
[解决办法]
哦，代码中的 strTemp 并没有用到。原来是为更复杂的情况预备的。