asked on
How to delete between specific lines from text file in C#
Hello,
I've one text file and i'd like to delete lines between two specific lines then i'd like to add new lines between these two lines. I really need an expert support for correct approach how to do that.
Any help would be great! and thanks.
Start string:
End String:
![SampleData]()
I've one text file and i'd like to delete lines between two specific lines then i'd like to add new lines between these two lines. I really need an expert support for correct approach how to do that.
Any help would be great! and thanks.
Start string:
ifctngroup.begin ( $G_mnt_nlin ) ! $G_mnt_nlin
End String:
ifctngroup.end ( $G_mnt_nlin ) ! $G_mnt_nlin
C#
Last Comment
Rikin Shah
I'm assuming you have some skills in C# since you are asking in that group.
Conceptually this feels fairly straight forward.
- open the input file for reading
- open the output file for writing
- read each line from input file, and write it to output file until you hit the "start" text match
- write the new lines you want to insert to output file
- continue reading the input file looking for the "end" text match, not writing them anywhere
- once you see the "end" text match, go back to reading lines from input and writing them to output
There are several ways you can implement this, setting a flag once you see "start" or "end", or a mode switch etc, or just moving on to different sections of logic and looping, that's often a personal preference.
»bp
Conceptually this feels fairly straight forward.
- open the input file for reading
- open the output file for writing
- read each line from input file, and write it to output file until you hit the "start" text match
- write the new lines you want to insert to output file
- continue reading the input file looking for the "end" text match, not writing them anywhere
- once you see the "end" text match, go back to reading lines from input and writing them to output
There are several ways you can implement this, setting a flag once you see "start" or "end", or a mode switch etc, or just moving on to different sections of logic and looping, that's often a personal preference.
»bp
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