Read/Write text file using the StringWriter : Text File Read Write « File Directory Stream « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. File Directory Stream
3. Text File Read Write

using System;
using System.IO;

using System.Text;

public class MainClass
{
    public static int Main(string[] args)
    {
    // Get a StringWriter and write some stuff.
    StringWriter writer = new StringWriter();
    writer.WriteLine("string 1");
    
    for(int i = 0; i < 10; i++)
    {
      writer.Write(i + " ");
    }
    writer.Write(writer.NewLine);

    writer.Close();

    Console.WriteLine("Contents:\n{0}", writer);
    
    StringBuilder str = writer.GetStringBuilder();
    string allOfTheData = str.ToString();
    Console.WriteLine("-> StringBuilder says:\n{0}", allOfTheData);

    str.Insert(20, "INSERTED STUFF");
    allOfTheData = str.ToString();
    Console.WriteLine("-> New StringBuilder says:\n{0}", allOfTheData);

    StringReader sr = new StringReader(writer.ToString());
    
    string input = null;
    while ((input = sr.ReadLine()) != null)
    {
      Console.WriteLine (input);
    }

    sr.Close();
        return 0;
    }
}

Contents:
string 1
0 1 2 3 4 5 6 7 8 9

-> StringBuilder says:
string 1
0 1 2 3 4 5 6 7 8 9

-> New StringBuilder says:
string 1
0 1 2 3 4 INSERTED STUFF5 6 7 8 9

string 1
0 1 2 3 4 INSERTED STUFF5 6 7 8 9