The document is a C# lab manual focused on menu handling within a Windows Forms application. It provides code snippets for creating a user interface with functionalities such as opening, saving, cutting, copying, and pasting text in a RichTextBox. The document outlines event handlers for menu item actions, demonstrating basic file operations and text manipulation.

1. PROGRAMMING USING C#
LAB MANUAL
SARASWATHI RAMALINGAM
SRI AKILANDESWARI WOMENS COLLEGE
THIRUVALLUVAR UNIVERSITY

2. Menu Handling
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace MENU_STRIP
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void nEWToolStripMenuItem_Click(object sender, EventArgs e)
{
richTextBox1.Visible = true;
}

3. private void oPENToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog odlg = new OpenFileDialog();
odlg.ShowDialog();
odlg.DefaultExt = "*.txt";
odlg.Filter="Text File |*.txt";
if (odlg.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
odlg.FileName.Length > 0)
{
richTextBox1.LoadFile(odlg.FileName,RichTextBoxStreamType.PlainText);
}
}
private void sAVEToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog sdlg = new SaveFileDialog();
sdlg.ShowDialog();
sdlg.DefaultExt = "*.txt";
sdlg.Filter = "Text File |*.txt";
if (sdlg.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
sdlg.FileName.Length > 0)
{
richTextBox1.SaveFile(sdlg.FileName,RichTextBoxStreamType.PlainText );
}
}

4. private void cLOSEToolStripMenuItem_Click(object sender, EventArgs e)
{
richTextBox1.Visible = false;
}
private void cUTToolStripMenuItem_Click(object sender, EventArgs e)
{
Clipboard.SetText(richTextBox1.SelectedText);
richTextBox1.SelectedText = string.Empty;
}
private void cOPYToolStripMenuItem_Click(object sender, EventArgs e)
{
Clipboard.SetText(richTextBox1.SelectedText);
}
private void pASTEToolStripMenuItem_Click(object sender, EventArgs e)
{
string ss = Clipboard.GetText();
richTextBox1.Text = richTextBox1.Text.Insert(richTextBox1.SelectionStart, ss);
}
private void eXITToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Dispose();
}
}
}

5. FORM DESIGN

6. OUTPUT