Read and Write a Text File - CSharp File IO

CSharp examples for File IO:Text File

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Description

Read and Write a Text File

Demo Code


using System;/* ww  w  . j a va2 s  . c o m*/
using System.IO;
using System.Text;

static class MainClass
{
    static void Main()
    {
        using (FileStream fs = new FileStream("test.txt", FileMode.Create))
        {
            using (StreamWriter w = new StreamWriter(fs, Encoding.UTF8))
            {
                // Write a decimal, string, and char.
                w.WriteLine(124.23M);
                w.WriteLine("Test string");
                w.WriteLine('!');
            }
        }
        using (FileStream fs = new FileStream("test.txt", FileMode.Open))
        {
            using (StreamReader r = new StreamReader(fs, Encoding.UTF8))
            {
                // Read the data and convert it to the appropriate data type.
                Console.WriteLine(Decimal.Parse(r.ReadLine()));
                Console.WriteLine(r.ReadLine());
                Console.WriteLine(Char.Parse(r.ReadLine()));
            }
        }
    }
}

Result


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