How to read from a text file and store a list of arrays in C #?

Question

I am trying to read a text file and save it in a list of arrays. It works without errors. Inside my text file it is.

277.18
311.13
349.23
277.18
311.13
349.23
277.18
311.13
349.23 

but on console output I see this most of the data.

277.18
311.13
349.23
349.23
**329.63
329.63
293.66
293.66
261.63
293.66
329.63
349.23
392**
277.18
311.13
349.23
277.18
311.13
349.23
277.18
311.13
349.23

Bold numbers in a text file are also highlighted. Here is my code. how to solve it ?? can someone help me .. please ...

        OpenFileDialog txtopen = new OpenFileDialog();
        if (txtopen.ShowDialog() == DialogResult.OK)
        {
            string FileName = txtopen.FileName;
            string line;
            System.IO.StreamReader file = new System.IO.StreamReader(FileName.ToString());
            while ((line = file.ReadLine()) != null)
            {
                list.Add(double.Parse(line));
            }
            //To print the arraylist
            foreach (double s in list)
            {
                Console.WriteLine(s);
            }
        }

Answer 1

I think yours listalready contains some data, you should clear it before adding new files to it.

OpenFileDialog txtopen = new OpenFileDialog();
if (txtopen.ShowDialog() == DialogResult.OK)
{
    list.Clear();   // <-- clear here

    string FileName = txtopen.FileName;
    string line;
    System.IO.StreamReader file = new System.IO.StreamReader(FileName.ToString());
    while ((line = file.ReadLine()) != null)
    {
        list.Add(double.Parse(line));
    }
    //To print the arraylist
    foreach (double s in list)
    {
        Console.WriteLine(s);
    }
}

To the other wise, everything seems to be in order.

Answer 2

Linq, :

if (txtopen.ShowDialog() == DialogResult.OK) {
  var result = File
    .ReadLines(txtopen.FileName)
    .Select(item => Double.Parse(item, CultureInfo.InvariantCulture));

  // if you need List<Double> from read values:
  //   List<Double> data = result.ToList();
  // To append existing list:
  //   list.AddRange(result);

  Console.Write(String.Join(Environment.NewLine, result));
}