ReadAllLines for a Stream object?

Question

There exists a File.ReadAllLines but not a Stream.ReadAllLines.

using (Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("Test_Resources.Resources.Accounts.txt")) using (StreamReader reader = new StreamReader(stream)) {     // Would prefer string[] result = reader.ReadAllLines();     string result = reader.ReadToEnd(); } 

Does there exist a way to do this or do I have to manually loop through the file line by line?

Answer 1

You can write a method which reads line by line, like this:

public IEnumerable<string> ReadLines(Func<Stream> streamProvider,                                      Encoding encoding) {     using (var stream = streamProvider())     using (var reader = new StreamReader(stream, encoding))     {         string line;         while ((line = reader.ReadLine()) != null)         {             yield return line;         }     } } 

Then call it as:

var lines = ReadLines(() => Assembly.GetExecutingAssembly()                                     .GetManifestResourceStream(resourceName),                       Encoding.UTF8)                 .ToList(); 

The Func<> part is to cope when reading more than once, and to avoid leaving streams open unnecessarily. You could easily wrap that code up in a method, of course.

If you don't need it all in memory at once, you don't even need the ToList...

Answer 2

The .EndOfStream property can be used in the loop instead of checking if the next line is not null.

List<string> lines = new List<string>();  using (StreamReader reader = new StreamReader("example.txt")) {     while(!reader.EndOfStream)     {         lines.Add(reader.ReadLine());     } }