1. The document describes 3 programming tasks involving designing Windows forms applications in C#. 2. The first task involves creating a form to display a greeting that includes the user's name and indicates their gender and how they heard about the application. 3. The second task involves creating a form with a listbox to add, remove, count and display selected items. 4. The third task involves creating a form with 3 textboxes that restrict input to numbers, uppercase letters and characters respectively.

1. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
Dhvani Bhesaniya
20SOEIT11003
LAB_TUTORIAL06
5ITA

2. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
1 : Design an application like follow. Dependson user selection it will
display the message as
shown. (If gender is Male then Mr. or Female then Miss)
code:
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;
namespace LabTut06
{
public partial class Form1 : Form
{
string a, b,c,d,h,i,j,k,l;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
a = textBox1.Text.ToString();
if (radioButton1.Checked)
{
c = "Mr. ";
}
else if (radioButton2.Checked)
{
c = "Miss ";
}
else
{
MessageBox.Show("please select any Gender ");
}
if (checkBox1.Checked)
{
h = " Newspaper ";
}
if (checkBox2.Checked)

3. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
{
i = " Website ";
}
if (checkBox3.Checked)
{
j = " Friends ";
}
if (checkBox4.Checked)
{
b = textBox2.Text.ToString();
}
else
{
MessageBox.Show("please select any source ");
}
label4.Text = ("Hello "+c+a+" You know about us from "+h+i+j+","+b);
}
}
}
Output:
2 : Designa formlike below.ImplementFollowingfunctionalitytothe application.

4. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
the listbox withitems.
itemfromListBox
Code:
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;
namespace LabTut06
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label4.Text = listBox1.SelectedItem.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
listBox1.Items.Add("Food For All");
listBox1.Items.Add("Good Books");
listBox1.Items.Add("Freedom of speech");
listBox1.Items.Add("Education ");
listBox1.Items.Add("XYZ");
listBox1.Items.Add("Good Movies");
listBox1.Sorted = false;
}
private void button5_Click(object sender, EventArgs e)
{

5. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
label2.Text = listBox1.Items.Count.ToString();
listBox1.Sorted = false;
}
private void button3_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();
listBox1.Sorted = false;
}
private void button4_Click(object sender, EventArgs e)
{
try
{
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
catch (Exception)
{ //display nothing
}
finally{ // statements to be executed
}
}
private void button2_Click(object sender, EventArgs e)
{
listBox1.Sorted = true;
}
}
}
Output:
3 : Designanapplicationwhichhasthree textboxes.Implementrestrictedpolicyforeach

6. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
textbox toenterdataonlyinnumericform, uppercase,characters
code:
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;
namespace LabTut06
{
public partial class Form3 : Form
{
public Form3()
{
InitializeComponent();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (System.Text.RegularExpressions.Regex.IsMatch(textBox1.Text, "[^0-
9]"))
{
MessageBox.Show("Please enter only numbers.");
textBox1.Text = textBox1.Text.Remove(textBox1.Text.Length - 1);
}
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
if( System.Text.RegularExpressions.Regex.IsMatch(textBox2.Text,
"[^A-Z]"))
{
MessageBox.Show("Please enter only upercase string.");
textBox2.Text = textBox2.Text.Remove(textBox2.Text.Length - 1);
}
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
if (System.Text.RegularExpressions.Regex.IsMatch(textBox3.Text, "[^a-
zA-z]"))
{

7. 21SOEIT11003 Enterprise Computing Through .NET Framework (CE525)
Dhvani Bhesaniya 5ITA
MessageBox.Show("Please enter only characters.");
textBox3.Text = textBox3.Text.Remove(textBox3.Text.Length - 1);
}
}
}
}
Output: