deleting & writing in the same file

[DeepButi]

jasie24,
as far as I can see you're trying something inconsistent with the basic concept of a sequential file.

To "update" a sequential file you have to create a new one, but trying to overwrite it will never work correctly.

You can "update" a binary file and even then you can not cross logical record boundaries. And of course you can open a text sequential file as a binary one, but you will have to deal with where cr+lf are, not to overwrite them, and so on, so it sounds really out of mind to me.

Open your file, get a line at a time, write it (or the modified one) to a new file and, once done, delete the original file and rename the new one.

Dim InputFile as IO.StreamReader
Dim OutputFile as IO.StreamWriter
Dim TheLine as String

FileCopy("MyIni.ini","BackupIni.ini")

InputFile = New IO.StreamReader("BackupIni.ini", System.Text.Encoding.Default)
OutputFile = New IO.StreamWriter("MyIni.ini", False)

TheLine = InputFile.ReadLine
While Not TheLine Is Nothing
    If ...your conditions here... Then
        OutputFile.WriteLine(TheLine)
    Else
        OutputFile.WriteLine("The replaced ine")
    End If
    TheLine = InputFile.ReadLine
End While
InputFile.Close
OutputFile.Close

'Kill "BackupIni.inI" if you don't want the backup anymore

Hope it helps