StreamWriter replace line with a new text

Question

Is it possible to replace the text in a text file with a new text without erasing the other data, here is my sample code, but its not working, I know there\'s a problem with

Answer 1

You could do it a lot more easily:

        string[] lines = System.IO.File.ReadAllLines("test");
        lines[0] = /* replace with whatever you need */
        System.IO.File.WriteAllLines("test", lines);

hope this helps

also I'd suggest using int.TryParse if you don't want an exception to be raised in your portion of code in case the first line of the file or the textbox values aren't numeric

if you really want to use the streamwriter you could go with this, also a simpler way:

line[0] = newbal.ToString();
foreach(string s in lines)
    sw.WriteLine(s);