Step 1: Open Visual Studio.
- Select new -> project
- Select your preferred language
- Select a WPF application
- Name the project
- Now name of project is "WpfTextFile"
Step 2 : Open the Toolbox of WPF application.
- Drag & Drop two button controls onto the design view.
- Drag & Drop one TextBox control onto the design view.
Step 3 : Now, the final source code of the XAML page is given below:
Code
<Window x:Class="WpfOpenFile.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<TextBox Height="129" HorizontalAlignment="Left" Margin="76,70,0,0" Name="textBox1" VerticalAlignment="Top" Width="289" />
<Button Content="Show" Height="23" HorizontalAlignment="Left" Margin="110,254,0,0" Name="button1" VerticalAlignment="Top" Width="75"
Click="Open_show" />
<Button Content="Write" Height="23" HorizontalAlignment="Right" Margin="0,254,163,0" Name="button2" VerticalAlignment="Top" Width="75"
Click="button2_Click" />
</Grid>
</Window>
Step 4 : Now, the Open_show button click code is in the Page1.xaml.cs file.
Code
private void Open_show(object sender, RoutedEventArgs e)
{
{
String File_name = "D:\\shubhi\\Test.txt";
if (System.IO.File.Exists(File_name) == true)
{
System.IO.StreamReader objReader;
objReader = new StreamReader(File_name);
textBox1.Text = objReader.ReadToEnd();
objReader.Close();
}
else
{
MessageBox.Show("File Not Exist");
}
}
}
Step 5 : Now, the Write button click code is in the Page1.xaml.cs file.
Code
private void button2_Click(object sender, RoutedEventArgs e)
{
String File_name = "D:\\shubhi\\Test.txt";
if (System.IO.File.Exists(File_name) == true)
{
FileStream fs = new FileStream(File_name, FileMode.Append, FileAccess.Write);
StreamWriter objWrite = new StreamWriter(fs);
objWrite.Write(textBox1.Text);
objWrite.Close();
}
else
{
FileStream fs = new FileStream(File_name, FileMode.Create, FileAccess.Write);
StreamWriter objWrite = new StreamWriter(fs);
objWrite.Write(textBox1.Text);
objWrite.Close();
}
textBox1.Clear();
}
Step 6 : Now, the final source code in the Page1.xaml.cs file.
Code
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;
namespace WpfOpenFile
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Open_show(object sender, RoutedEventArgs e)
{
String File_name = "D:\\shubhi\\Test.txt";
if (System.IO.File.Exists(File_name) == true)
{
System.IO.StreamReader objReader;
objReader = new StreamReader(File_name);
textBox1.Text = objReader.ReadToEnd();
objReader.Close();
}
else
{
MessageBox.Show("File Not Exist");
}
}
private void button2_Click(object sender, RoutedEventArgs e)
{
String File_name = "D:\\shubhi\\Test.txt"
FileStream fs = new FileStream(File_name, FileMode.Append, FileAccess.Write);
if (System.IO.File.Exists(File_name) == true)
{
StreamWriter objWrite = new StreamWriter(fs);
objWrite.Write(textBox1.Text);
objWrite.Close();
}
else
{
FileStream fs = new FileStream(File_name, FileMode.Create, FileAccess.Write);
StreamWriter objWrite = new StreamWriter(fs);
objWrite.Write(textBox1.Text);
objWrite.Close();
}
textBox1.Clear();
}
}
}
Output
Output from the Write button click.
Output from the show button click.
Resources