How to read a text file and add the data to a int array in C#?

Question

I\'m trying to read a text file which contains numbers separated by a comma. When I read using File.Readline() I get it to a string[]. I need to conver

Answer 1

Using List can help you, and use StringSplitOptions.RemoveEmptyEntries to prevent null exception in Convert.ToInt64

var lineArray = new List>();

foreach (var lineString in File.ReadAllLines("path"))
{
    var line = new List();
    string[] values = lineString.Split(new[] { ',', ' ' },  
                                       StringSplitOptions.RemoveEmptyEntries);
    line.AddRange(values.Select(t => Convert.ToInt64(t)));
    lineArray.Add(line);
}

and using it:

// Array of numbers for specific line
var resultArray = lineArray[lineNumber].ToArray();