Saving from List to txt

Question

I want my program to read from two text files into one List. The List is sorting and cleaning duplicates.

I want the

Answer 1

There's a handy little method File.WriteAllLines -- no need to open a StreamWriter yourself:

In .net 4:

File.WriteAllLines(speichern, ausgabeListe);

In .net 3.5:

File.WriteAllLines(speichern, ausgabeListe.ToArray());

Likewise, you could replace your reading logic with File.ReadAllLines, which returns an array of strings (use ToList() on that if you want a List).

So, in fact, your complete code could be reduced to:

// Input
List data = File.ReadAllLines(pfad + datei)
    .Concat(File.ReadAllLines(pfad2 + datei2))
    .Distinct().ToList();

// Processing
data.Sort(); 

// Output
data.ForEach(Console.WriteLine); 
File.WriteAllLines(speichern, data);