FileStream and StreamWriter to remove all blank lines in a Text file

I used two methods to remove all blank lines in a text file but either one leave one blank line at the end.
Question 1: What is difference between FileStream and StreamWriter? which one below is better or the same?
method one:
private void CleanFile(string file) { string[] lines; try {
if (File.Exists(file)) { lines = File.ReadAllLines(file); using (FileStream fs = new FileStream(file, FileMode.Create)) { using(StreamWriter sw = new StreamWriter(fs)) { foreach (string line in lines) { if (!String.IsNullOrEmpty(line)) sw.WriteLine(line); } } } } } catch {
} }
Method two:
private void CleanFile(string file) { string[] lines; try {
if (File.Exists(file)) { lines = File.ReadAllLines(file); using (StreamWriter sw = new StreamWriter(file)) { foreach (string ...