Question

I have a situation where I would like to be able to select a value / row in a ListBox, and have this selected value removed from a text file, e.g. test.txt. How could this be done?

Answer 1

If the text file is small your can read it all into memory in replace the string.

var str = File.ReadAllText("c:\\test.txt");
File.WriteAllText("c:\\test.txt", str.Replace(strToRemove, ""));