How to Read and write txt file using C#

kingmaker · #1 (**permalink**) 07-24-2007, 05:18 AM

How to Read and write txt file using C#

oxygen · #2 (**permalink**) 07-24-2007, 05:59 AM

Reading and Writing Text file:

Reading:

using System;
using System.IO;

namespace csharp_station.howto
{
class TextFileReader
{
static void Main(string[] args)
{
// create reader & open file
Textreader tr = new StreamReader("date.txt");

// read a line of text
Console.WriteLine(tr.ReadLine());

// close the stream
tr.Close();
}
}
}

Writing:

using System;
using System.IO;

namespace csharp_station.howto
{
class TextFileWriter
{
static void Main(string[] args)
{
// create a writer and open the file
TextWriter tw = new StreamWriter("date.txt");

// write a line of text to the file
tw.WriteLine(DateTime.Now);

// close the stream
tw.Close();
}
}
}

S.Vinothkumar · #3 (**permalink**) 08-25-2007, 02:40 AM

We can read the file using File class as follows,

Code:

//Read a txt file

string[] str = File.ReadAllLines(@"C:/test.txt");
if (str.Length > 0)
 {
   for (int i = 0; i < str.Length; i++)
   {
     MessageBox.Show(str[i]);
   }
 }

We can write the file using StreamWriter as follows,

Code:

//Write a txt file

StreamWriter sw = new StreamWriter("C:/test.txt");
string str = "Test for writing";
sw.WriteLine(str);
sw.Close();

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