CODEWITHSUNDEEP
c#wpf
usrNotFound
usrNotFound

Reputation: 2800

C# store file content to a List<String>

What I am trying to achieve:

Want to read text file and store it in a List of Strings. Use second List of string to save if found using regex

I dont know how to tackle this problem but this is what i have done so far.

using (StreamReader content = new StreamReader(@file_To_Read))
{

 List <String> newLine = new List <String> ();

 string line;
    while (line = content.ReadLine()) != null) 

 //add line to List
  newLine.Add(line);
}

Lets say there is text called 'causes' in some of the lines.What I want is now to iterate through the list or lines whatever is easy and store the line in a new list.

Upvotes: 0

Views: 625

Answers (5)

user3587767
user3587767

Reputation: 152

Following should work

using (StreamReader content = new StreamReader("FileName")) {

            List<String> newLine = new List<String>();
            while( ! content.EndOfStream)
            {
                String line = content.ReadLine();                
                if (line.Contains("causes"))
                {
                    //add line to List
                    newLine.Add(line);
                }
            }
        }

Upvotes: 0

Tomtom
Tomtom

Reputation: 9394

To read all lines into a List you can write the following:

List<string> lines = File.ReadAllLines(@file_To_Read).ToList();

Now if you want a new list with all lines where the word 'causes' appears you can use the following linq-query:

List<string> causes = lines.Where(line => line.Contains("causes").ToList();

Upvotes: 0

mindandmedia
mindandmedia

Reputation: 6825

So maybe you want something along these lines?

string[] lines = File.ReadAllLines(filePath); //reads all the lines in the file into the array
string[] causes = lines.Where(line => line.ToLowerInvariant().Contains("causes")).ToArray(); //uses LINQ to filter by predicate

Now you have your lines containing the word "causes" in the array named causes

Hope, that gets you started.

Upvotes: 0

Mairaj Ahmad
Mairaj Ahmad

Reputation: 14604

You can filter the list like this

List<string> newlist = newLine.Where(x => x.Contains("your string to match")).ToList();

Upvotes: 2

Mike Eason
Mike Eason

Reputation: 9713

Have you considered using File.ReadAllLines?

string[] lines = System.IO.File.ReadAllLines("your_file_path.txt");

Or something more to your requirements.

List<string> lines = System.IO.File.ReadAllLines("your_file_path.txt").ToList();

Upvotes: 1

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