How to delete a particular line from a file?

how to delete first line in a txt file

• i am new in c#. I want to delete the first line in the txt file .

• Answer:

  Basically you need to copy it to another file - you can't remove (or insert) data in a file "in place". For example, in .NET 4 it's easy: var lines = File.ReadLines("input.txt").Skip(1); File.WriteAllLines("output.txt", lines); It's slightly more work in older versions of .NET, at least if you want to avoid loading the whole file into memory, but still not too hard. Let me know if you need the code for an older version (and state which). EDIT: As discussed in comments, if you're willing to load the whole file into memory, you can write straight back to the same file: // Note that ReadAllLines is eager, not lazy like ReadLines var lines = File.ReadAllLines("file.txt").Skip(1); File.WriteAllLines("file.txt", lines);