Question

Develop an application in C#, which stores and manages your favorite web bookmarks. In this application the user should be able to display the list of all current bookmarks, as well as add, edit, or remove bookmarks from the list. Each bookmark consists of its title, URL address and, description. The list of bookmarks should be saved in secondary storage, in order not to be lost after the application is closed . Therefore, each time it is started, the application loads all bookmarks from a file. Also, the user should have the choice to save the current list of bookmarks to the file any time. The user interface is requested to be graphical.

Answer 1

Output will be like:

Code will be like:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace BookmarkMaintenanceForm
{
public partial class Form1 : Form
{

List<string> list = new List<string>();
string oldItem;

public Form1()
{
InitializeComponent();

using (StreamReader reader = new StreamReader("..\\..\\TextFile1.txt"))
{
while (true)
{
string line = reader.ReadLine();
if (line == null)
{
break;
}
list.Add(line);
  
}
}

for (int i = 0; i < list.Count; i++)
{
listBox1.Items.Add(list[i]);

}

}

private void button4_Click(object sender, EventArgs e)
{

using (StreamWriter writer = new StreamWriter("..\\..\\TextFile1.txt"))
{
for (int i = 0; i < list.Count;i++ )
{
writer.WriteLine(list[i]);

}

}
  
  
  
this.Close();
}

private void button1_Click(object sender, EventArgs e)
{
list.Add(textBox1.Text);

listBox1.Items.Clear();

for (int i = 0; i < list.Count; i++)
{
listBox1.Items.Add(list[i]);

}

}

private void button2_Click(object sender, EventArgs e)
{
try
{
  
listBox1.Items.Add(textBox2.Text);
textBox2.Text = "";
listBox1.Items.Remove(oldItem);

}
catch
{
MessageBox.Show("Select item to edit");
}
  
  
}

  
private void button3_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();

  
list.Remove(textBox2.Text);

for (int i = 0; i < list.Count; i++)
{
listBox1.Items.Add(list[i]);

}

textBox2.Text = "";
}

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
textBox2.Text = listBox1.SelectedItem.ToString();

oldItem = textBox2.Text;

}
catch
{
MessageBox.Show("Select item to edit");
}

}
}
}

Note: Try closing the application through close button in UI, It will write all the list item to the file again.

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