C programming delete a line in a file

Okay so now your answer does little other than re-iterate what the OP's code is doing, then deny that there is a question. Not useful. I think someone just mass down voted everyone's answer. Still; what I said is a simplified version of what's used by databases Sarmad Ali Sarmad Ali 1 1 silver badge 12 12 bronze badges. Why is it necessary to buffer the entire file contents? That is very inefficient and I don't see how it will solve the problem. Sign up or log in Sign up using Google.

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Question feed. Stack Overflow works best with JavaScript enabled. Copy paste the whole text until you reach the line intend to be deleted. The while loop has 1 truth condition which makes it loop till it reaches the EOF character and then it breaks out of the while loop. Home Delete a specific line from a text file using C. Leonhard P. Adam Hawes Adam Hawes 5, 1 1 gold badge 20 20 silver badges 29 29 bronze badges.

ReadAllLines fileIN ; foreach string line in data if! Equals "my line to remove" File. Delete fileIN ; File. Mauricio Kenny Mauricio Kenny 87 6 6 bronze badges. WriteLine reader. Frying Brains Frying Brains 11 1 1 bronze badge. Remove a block of code from multiple files To expand on Markus Olsson's answer, I needed to remove a block of code from multiple files.

WriteLine e. Open, FileAccess. ReadWrite , Encoding. Delete file ; File. WriteLine excpt. EndsWith ". Joel Wiklund Joel Wiklund 1, 2 2 gold badges 12 12 silver badges 20 20 bronze badges.

Why can't use this? ReadAllLines openFileDialog1. FileName ; Then look up the line you need to delete and replace it with "" : lines[x].

Replace lines[x], "" ; Done! Marty Brant Marty Brant 7 1 1 bronze badge. This doesn't remove the line from the file, all it does is make line x empty. Therefore if you were doing this a lot, you would just end up with a bunch of empty returns in the file, which could mess up the indexes.

It actually doesn't replace anything at all. Replace is a pure method! Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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