Writing Text file

Arun Kumar

17y4.7k.NET

I am new to c# coding community. All i want to know is how to write and read a simple text file inwindows apllications

With Regards
Arun Kumar

6 Replies

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17y ago
Accepted answer
Hai friend

Say u have a text file called hello.txt in c:now i'll teach u how to read text from hello.txt and print it....

using System;
using System.Collections.Generic;
using System.text;
using System.IO;

namespace textfile
{
class program
   {
        static void Main(string [] args)
             {
                  StreamReader sr=new Streamreader("C:\\hello.txt");
                  Console.WriteLine(sr.Readline());
                   sr.close();
              }
    }
}

Same if u want to create a new a textfile and write something in it..The following code explain

using System;
using System.Collections.Generic;
using System.text;
using System.IO;

namespace textfile
{
class program
   {
        static void Main(string [] args)
             {
                  StreamWriter sw=new StreamWriter("C:\\writenew.txt");
                  sw.WriteLine("trying to write something in the text file");
                   sw.close();
              }
    }
}

Hoped it help..Any doubts feel free to ask....

If Someway u Liked this answer don't forget to mark it as correct answer...
17y ago
Hai...

First create a new windows application.Hope u know it.Then drag a textbox and two command buttons.name the buttons as Read and write.

double click the Write cmd button and add the following code

private void Write_Click(object sender, EventArgs e)
        {
            StreamWriter sw = new StreamWriter("C:\\writenew.txt");
            string str = textBox1.Text;
            sw.WriteLine(str);
            MessageBox.Show("successfully witten");
            sw.Close();
        }

This writes data given in textbox into writenew.txt file which gets stored in c: drive

Next step is to read all the data from a text file and display it in the textbox.For this doubleclick the Read command button and add the following code..

private void Read_Click(object sender, EventArgs e)
        {
            string ReadData = File.ReadAllText("c:\\writenew.txt");

            textBox1.Text = ReadData;

        }

Hope this help feel free to ask any doubts....
Kirtan Patel17y ago
Friend,

the code provided by me is for windows Application ..

check "Do you like this answer" if it helps you :)
Arun Kumar17y ago
Hai man the

the above code in console just worked fine..

as i am beginner can u explain it in windows application...
Danatas Gervi17y ago

May be this also possible?

private void btnWrite_Click(object sender, EventArgs e)

{

string DataYouWantoToWrite = textBox1.Text;

File.AppendAllText("sample.txt", DataYouWantoToWrite);

}

To Kirtan – Why do you prefer to use the StreamWriter?
Kirtan Patel17y ago
Friend,

Here is Simple Code to Read and Write Text File

add below line at Top Of the Code

using System.IO;

and Write Code in Button Like Below

private void btnWrite_Click(object sender, EventArgs e)

        {

            //Writing Data into TextFile

            string DataYouWantoToWrite = textBox1.Text;

            StreamWriter sw = new StreamWriter("sample.txt");

            sw.Write(DataYouWantoToWrite);

            sw.Close();

        }

        private void btnRead_Click(object sender, EventArgs e)

        {

           //Now Read The Data That We have Written in to Text BOx

            string ReadData = File.ReadAllText("sample.txt");

            textBox1.Text = ReadData;

        }

If it Helps you please check "Do you like this answer" :)