Read the textfile using index

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Hi,
I have created the textfile inside the text file more than 5000 lines are there.For me when i'm entering 300 in my textbox from 300 the line should start displaying.

Regards
Balamurugan

Posted 4-Oct-13 21:56pm

Balamurugan1989

Updated 4-Oct-13 21:59pm

v2

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MuhammadUSman1 5-Oct-13 4:30am

Please check my solution hope so it'll help you.

if any concern then let my know.

Ask freely.

4 solutions

Solution 2

Please check it. Hope so it will help you.

C#

private static string ReadAllLines(string FilePath, int LineNo)
       {
           try
           {
               //it will get all lines of file in string array.
               string[] AllLinesOfFile = File.ReadAllLines(FilePath);

               // To Values from spacific index to onword,

               #region Get Spacific values
               if (LineNo < AllLinesOfFile.Length)
               {
                   string[] ResultantArray = null;
                   Array.Copy(AllLinesOfFile, LineNo, ResultantArray, 0, AllLinesOfFile.Length - 1);
                   return string.Join(Environment.NewLine, ResultantArray);
               }
               #endregion

               // you can use it according to your requirments.

               return string.Empty;
           }
           catch (Exception)
           {

               throw;
           }
       }

if any issue let me know.

Thanx

Muhammad USman

Posted 4-Oct-13 22:29pm

MuhammadUSman1

Comments

Balamurugan1989 5-Oct-13 5:05am

wher i need to execute this code???In the Window_load or button click event..

MuhammadUSman1 5-Oct-13 5:59am

What you have tried yet. please paste your code, i'll edit and give you proper solution.

Balamurugan1989 5-Oct-13 6:09am

I have written the code pl give me the solution

MuhammadUSman1 5-Oct-13 6:01am

Did you make any Project for this purpose or not?

Tell in both case, Or give me proper requirements what you want to do?

Balamurugan1989 5-Oct-13 6:06am

I have Executed to read the text file using string but now need to execute the index of the text file i.e in text file more than 1000 lines are there using index when i'm selecting 500 means from that the textfile should view.

<pre lang="cs">using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.IO;
using Microsoft.Win32;</pre>
namespace TxtFile
{

public partial class MainWindow : Window
{
List<int> lst = new List<int>();
public MainWindow()
{
InitializeComponent();

}

private void Window_Loaded(object sender, RoutedEventArgs e)
{

}

private void button1_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog op = new OpenFileDialog();
op.ShowDialog();
textBox1.Text = op.FileName;
}

private void btnLoad_Click(object sender, RoutedEventArgs e)
{

StreamReader rd = new StreamReader(@"C:\Bala\Bala.txt");
string txt_file = rd.ReadToEnd();
MessageBox.Show(txt_file);
}

}

}

}

MuhammadUSman1 5-Oct-13 6:24am

You want to show data on KeyPress or on ButtionClick?

MuhammadUSman1 5-Oct-13 6:25am

Check my new solution.

MuhammadUSman1 5-Oct-13 6:33am

You can add one more button on that click event call my function and give Your FilePath and No from where to onward you want to display.

Hope so you got my point?

Balamurugan1989 5-Oct-13 7:48am

Tks For ur code....

MuhammadUSman1 6-Oct-13 23:46pm

w.c

Solution 1

when you write every n character or when \n you inceremtn i(i++)
and when i=300 display

Posted 4-Oct-13 22:03pm

Kamran Ayati

Comments

Balamurugan1989 5-Oct-13 4:05am

could u explain me briefly...

MuhammadUSman1 5-Oct-13 4:29am

Check my solution.

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Balamurugan1989 · Accepted Answer · 2013-10-05T01:38:00

private void btnLoad_Click(object sender,RoutedEventArgs e)
{
//Call my function like this, if you want to read all lines then give 0 instead of 300
string str = ReadAllLines(@"C:\Bala\Bala.txt", 300);
MessageBox.Show(str);
}

private static string ReadAllLines(string FilePath, int LineNo)
{
try
{
//it will get all lines of array.
string[] AllLinesOfFile = File.ReadAllLines(FilePath);

// To Values from spacific index to onword,

StringBuilder result = new StringBuilder();
for ( int i = LineNo; i< AllLinesOfFile.Length; i++))
{
result.Append(AllLinesOfFile[LineNo]+Environment.NewLine);
}

// you can use it according to your requirments.

return result.ToString();
}
catch (Exception)
{

throw;
}
}

MuhammadUSman1 · Accepted Answer · 2013-10-05T00:28:00

C#

  private void btnLoad_Click(object sender,RoutedEventArgs e)
        {
//Call my function like this, if you want to read all lines then give 0 instead of 300
            string str = ReadAllLines(@"C:\Bala\Bala.txt", 300);
             MessageBox.Show(str); 
        }

  private static string ReadAllLines(string FilePath, int LineNo)
        {
            try
            {
                //it will get all lines of array.
                string[] AllLinesOfFile = File.ReadAllLines(FilePath);
                
                // To Values from spacific index to onword,

                StringBuilder result = new StringBuilder();
                for ( LineNo = 0; LineNo < AllLinesOfFile.Length; LineNo++)
                {
                    result.Append(AllLinesOfFile[LineNo]+Environment.NewLine);
                }

                // you can use it according to your requirments.

                return result.ToString();
            }
            catch (Exception)
            {
                
                throw;
            }
        }

if any issue then tell me.

Read the textfile using index

4 solutions

Solution 4

Solution 3

Solution 2

Solution 1

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