delete a line in a text file

Question

Hello How do I delete and / or replace a line in a text file (C # windows phone). Thank you.

Ramesh Maruthi · Answer

If the line you want to delete is based on the content of the line: string line = null; string line_to_delete = the line i want to delete; using (StreamReader reader = new StreamReader(C:\input)) { using (StreamWriter writer = new StreamWriter(C:\output)) { while ((line = reader.ReadLine()) != null) { if (String.Compare(line line_to_delete) == 0) continue; writer.WriteLine(line); } } } Or if it is based on line number: string line = null; int line_number = 0; int line_to_delete = 12; using (StreamReader reader = new StreamReader(C:\input)) { using (StreamWriter writer = new StreamWriter(C:\output)) { while ((line = reader.ReadLine()) != null) { line_number++; if (line_number == line_to_delete) continue; writer.WriteLine(line); } } }