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lios
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text file delete line

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hi i have a text file with 1000 lines and i wand to delete the last line each time i press a button!
is any function to delete the last line??

thanks

text file delete line
  • asked 2 years ago
(x)
foamy
2499

Could you post your existing code?

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last answered 2 years ago

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since they are 1000 lines "which is not that high unless the line has many bytes", read all the lines and write them without the last line.

string myfile="C:\myFile.txt";//any file name
                System.Collections.Generic.List<string> newLines = new System.Collections.Generic.List<string>();
                newLines.AddRange(System.IO.File.ReadAllLines(myfile));
                newLines.RemoveAt(newLines.Count - 1);
                System.IO.File.WriteAllLines(myfile, newLines.ToArray());

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lios
30

yes but the file have 1000 for start and i beleve the max lines will be 6000-8000

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vulpes
17279

You can improve performance by only writing back the remaining lines to the file when the application is about to close.

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lios
30

and if the application dont close correctly, then the file is brocken???

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