Hey...i am doing Split now.
But, my split method cannot function well. I want split my text file content from horizontal to vertical. But, my output always got problem.

for example

my text file content is like this..
eg.
1 2 3 4 5
2 3 4 5

my output wants like this
1 2
2 3
3 4
4 5
5
but my output always give me like this
1
2
3
4
5
2
3
4
5

So, how to solve it? And how to show it in the textbox??

StringBuilder sb = new StringBuilder();
                    string line;
                    string Temp = " ";

                    if (File.Exists(fileOpen.FileName)) 
                    {

                        StreamReader file = null;
                        try 
                        {
                            file = new StreamReader(fileOpen.FileName);
                            while ((line = file.ReadLine()) != null)
                            {
                                sb.AppendLine(line);
                            }
                           // textBox1.Text = sb.ToString();
                           
                            
                                
                            foreach (string lines in File.ReadAllLines(fileOpen.FileName))
                            {
                                 string[] Split = lines.Split(new string[] { " ", "\n", "\r", "\t" }, StringSplitOptions.RemoveEmptyEntries);

                                foreach (string Splits in Split)
                                {
                                    Temp = Temp + "\n" + Split;
                                }

                                //show line by line after split
                                MessageBox.Show(Temp, "read by line");
                            }
                          
                            


                        }

this is the coding..hope someone can help me?

:)
Check this out man:

private void method()
        {
            string allText = "1, 2, 3, 4, 5\n2, 3, 4, 5";
            allText = allText.Replace(",", "");
            string[] lines = allText.Split(new string[] { "\n" }, StringSplitOptions.RemoveEmptyEntries);

            Dictionary<int, List<int>> dic = new Dictionary<int, List<int>>();

            for (int i = 0; i < lines.Length; i++)
            {
                string[] _Chars = lines[i].Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);

                int counter = 0;
                foreach (string _char in _Chars)
                {
                    int number = Convert.ToInt32(_char);
                    if (dic.ContainsKey(counter))
                        dic[counter].Add(number);
                    else
                    {
                        List<int> list = new List<int>();
                        list.Add(number);
                        dic.Add(counter, list);
                    }
                    counter++;
                }
            }

            //NOW lets show what we got:
            string rows = null;
            foreach (KeyValuePair<int, List<int>> item in dic)
            {
                for (int i = 0; i < item.Value.Count; i++)
                    rows += item.Value[i] + " ";
                rows = rows + Environment.NewLine;
            }
            MessageBox.Show("List of new items:\n\n" + rows);
        }

What can you say? Just tell me if you understand the code?!
I have decided to use a Dictonary with adding keys and values into it.
Mitja

using System;
using System.IO;

namespace TestBed {
    class Program {
        static void Main(string[] args) {
            String[] lines = File.ReadAllLines("data.txt");
            String[] first = lines[0].Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
            String[] second = lines[1].Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

            for (int i = 0; i < first.Length; i++) {
                Console.WriteLine("{0} {1}", first[i], i >= second.Length ? " " : second[i]);
            }

            Console.ReadLine();
        }
    }
}
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