(C#) Reading a part of a line

Question

I have a text file and within it, it looks like:

xxxx:value

All I want to read is the value, I've tried to manipulate:

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        try
        {
            using (StreamReader sr = new StreamReader("TestFile.txt"))
            {
                String line = sr.ReadToEnd();
                Console.WriteLine(line);
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("The file could not be read:");
            Console.WriteLine(e.Message);
        }
    }
}

But I haven't had much luck in doing that, any help would be brilliant.

Answer 1

You'll need to loop through each line and split each line... Probably should check that each line isn't null and that it does contain a colon... but that could be unnecessary depending on your data...

using System;
using System.IO;

class Test
{
    public static void Main()
    {
            try
            {
                using (StreamReader sr = new StreamReader("TestFile.txt"))
                {
                    while (!sr.EndOfStream)
                    {
                        String line = sr.ReadLine();
                        if (line != null && line.Contains(":"))
                            Console.WriteLine(line.Split(':')[1]);
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("The file could not be read:");
                Console.WriteLine(e.Message);
            }
    }
}

Answer 2

Try using string.Split():

Console.WriteLine(line.Split(':')[1]);

Answer 3

   using System;
    using System.IO;

    class Test
    {
        public static void Main()
        {
            try
            {
                using (StreamReader sr = new StreamReader("TestFile.txt"))
                {
                    String line = sr.ReadToEnd();
                    string[] array = line.Split(':');                    
                    Console.WriteLine(array[1]);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("The file could not be read:");
                Console.WriteLine(e.Message);
            }
        }
    }