This document contains the code for 13 programs written in C# .NET as part of a lab manual for a DOTNET Technology course. The programs cover basic concepts like arithmetic calculations, array operations, classes, inheritance, functions, and Windows forms applications including a calculator and basic notepad. For each program, the code is provided along with sample input/output.

1. STAR ACADEMY OF TECHNOLOGY AND MANAGEMENT
INDORE
COMPUTER SCIENCE & ENGINEERING
DOTNET TECNOLOGY(CS-406)
LAB MANUAL
Submitted By :
Name : RANJIT KUMAR NAHAK
Session : Jan 2014-Jun 2014
Dept. : CSE, SATM

2. 1) W.A.P to perform basic arithmetic calculation.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace add
{
class Program
{
static void Main(string[] args)
{
int a, b;
Console.WriteLine("Enter first nos.");
a = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter second no.");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("add is :{0}", a + b);
Console.WriteLine("sub is :{0}",a-b);
Console.WriteLine("multiis :{0}",a*b);
Console.WriteLine("devi is :{0}",a/b);
Console.ReadLine();
}
}
}

3. OUTPUT

4. 2) W.A.P to interchange the value of 2 variables without using third variable.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace swap
{
class Program
{
static void Main(string[] args)
int a = 6;
int b = 7;
Console.WriteLine("the numbers before swapping a={0} and b={1}",a,b);
a = a + b;
b = a - b;
a = a - b;
Console.WriteLine("the numbers after swapping a={0} and b={1}", a,
b); Console.Read();
}
}
}

5. OUTPUT

6. 3) W.A.P to display array elements & their sum.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace array
{
class Program
{
static void Main(string[] args)
{
int[] num = { 10, 20, 30, 40 }; int n =
num.Length; Console.WriteLine("array
elements"); for (int i = 0; i < n; i++)
{ Console.WriteLine(num[i]);
}
int sum = 0;
for (int i = 0; i < n; i++)
{ sum = sum + num[i];
} Console.WriteLine("sum"+sum);
Console.Read();
}
}
}

7. OUTPUT

8. 4) W.A.P to input array elements & sort them.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace arrayip
{
class Program
{
static void Main(string[] args)
int i, j, temp;
int[] ar = new int[5];
Console.WriteLine("Enter the elements of array");
for (i = 0; i < ar.Length; i++)
{
ar[i] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine("Sorted array is: ");
{
for (i = 0; i < ar.Length; i++)
{
for (j = i + 1; j < ar.Length; j++)
{
if (ar[i] > ar[j])
{
temp = ar[i]; ar[i] =
ar[j]; ar[j] = temp;
}
}
}
for (i = 0; i < ar.Length; i++)
{
Console.Write(ar[i]);
Console.ReadLine();
}
}
}
}}

9. OUTPUT

10. 5) W.A.P using c lass.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace
{
class Program
{
class student
{
String nm, dep, gen;
public void setdata()
{
Console.WriteLine("Eter Name"); nm =
Console.ReadLine();
Console.WriteLine("Enter Dept"); dep =
Console.ReadLine();
Console.WriteLine("Enter gender"); gen =
Console.ReadLine();
}
public void putdata()
{
Console.WriteLine("Name " +nm);
Console.WriteLine("DEPT " +dep);
Console.WriteLine("Gender " +gen);
}
}
static void Main(string[] args)
{
student stu = new student();
stu.setdata(); stu.putdata();
Console.ReadLine();
}
}
}

11. OUTPUT

12. 6) W.A.P to print fibonacci series.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace fibonic_series
{
class Program
{
static void Main(string[] args)
{
int a, b, c,n;
a=0;
b=1;
Console.WriteLine("Enter Limit: ");
n =
Convert.ToInt32(Console.ReadLi
ne()); Console.WriteLine( a);
Console.WriteLine( b);
for(int i=3;i<=n;i++)
{
c = a + b;
a = b; b = c;
Console.Writ
eLine(c);
}
Console.ReadLine();
}
}
}

13. OUTPUT

14. 7) W.A.P using function overloading.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace funover
{
class Program
{
class worker
{
public void salary(int a, int b)
{
int total, bonus;
Console.Write("Enter first bonus: ");
bonus = Convert.ToInt32(Console.ReadLine());
total = bonus + a + b; Console.WriteLine();
Console.WriteLine("Total salary is: "+total);
Console.WriteLine();
}
public void salary(int a)
{
int total, bonus;
Console.Write("Enter second bonus: ");
bonus = Convert.ToInt32(Console.ReadLine());
total = bonus + a; Console.WriteLine();
Console.WriteLine("Total salary is: "+total);
}
}
static void Main(string[] args)
{
worker w = new worker();
w.salary(5000,6000);
w.salary(10000);
Console.ReadLine();
}
}

15. }
OUTPUT

16. 8) W.A.P to show multilevel inheritance.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace multiinhrit
{
class Area
{
public int l, b;
public void cal_area()
{
Console.WriteLine();
Console.WriteLine("The area is:(l*b) " + (l * b));
}
}
class volume : Area
{
public int h;
public void cal_volume()
{
Console.WriteLine();
Console.WriteLine("The volume is: " + (l * b * h));
}
}
class density : volume
{
int m;
public density(int ll, int bb, int hh, int mm)
{
l = ll;
b = bb;
h = hh;
m = mm;
}
public void cal_density()
{
int d;
d = m / (l * b * h); Console.WriteLine();
Console.WriteLine("The density is: " + d);
}

17. public void showdata()
{
Console.WriteLine("The length is: " + l);
Console.WriteLine();
Console.WriteLine("The breadth is: " + b);
Console.WriteLine();
Console.WriteLine("The height is: " + h);
Console.WriteLine();
Console.WriteLine("The mass is: " + m);
}
}
class Program
{
static void Main(string[] args)
density dense = new density(12,10,5,4000);
dense.showdata();
dense.cal_volume();
dense.cal_area();
dense.cal_
density();
Console.R
ead();
}
}
}

18. OUTPUT

19. 9) W.A.P to print star pyramid.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace star
{
class Program
{
static void Main(string[] args)
{
int i,j;
Console.WriteLine("pyramid of star:");
for (i = 0; i <= 5; i++)
{
for (j = 0; j < i; j++)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}
}

20. OUTPUT
WINDOWS PROGRAMMING

21. 10) W.a.P to print the factorial of a given no.
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 fact
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
int n,i,fact=1;
n = Convert.ToInt32(textBox1.Text);
for (i = 1; i <= n; i++)
{
fact = fact * i;
}
textBox2.Text = Convert.ToString(fact);
}

22. OUTPUT

23. 11) W.A.P to find the greatest of three nos.
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 greatest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
int a, b, c;
a = Convert.ToInt32(textBox1.Text);
b = Convert.ToInt32(textBox2.Text);
c = Convert.ToInt32(textBox3.Text);
if (a > b && a > c)
{
MessageBox.Show("A is Greatest");
}
else
{
if (b > c)
{
MessageBox.Show("B is Gratest");
}
else
{
MessageBox.Show("C is Greatest");
}
}
textBox1.Text

24. = "";
textBox2.Text
= "";
textBox3.Text
= "";
}
}
}

25. OUTPUT

26. 12) W.A.P to display calculator.
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 calc
{
public partial class Form1 : Form
{
String str = "";//globally
String str1 = "";
Double i, j, k,flag=0;
public Form1()
{
InitializeComponent();
}
private void button16_Click(object sender, EventArgs e)
{
textBox1.Text = " ";
textBox2.Text = " ";
str = "";
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text =str+ "1";
str = textBox1.Text;
}
private void button2_Click(object sender, EventArgs e)
{

27. textBox1.Text =str+ "2";
str = textBox1.Text;
}
private void button3_Click(object sender, EventArgs e)
{
textBox1.Text = str+"3";
str = textBox1.Text;
}
private void button4_Click(object sender, EventArgs e)
{
textBox1.Text = str+"4";
str = textBox1.Text;
}
private void button5_Click(object sender, EventArgs e)
{
textBox1.Text = str+"5";
str = textBox1.Text;
}
private void button6_Click(object sender, EventArgs e)
{
textBox1.Text = str+"6";
str = textBox1.Text;
}
private void button7_Click(object sender, EventArgs e)
{
textBox1.Text = str+"7";
str = textBox1.Text;
}
private void button8_Click(object sender, EventArgs e)
{
textBox1.Text = str+"8";
str = textBox1.Text;
}

28. private void button9_Click(object sender, EventArgs e)
{
textBox1.Text = str+"9";
str = textBox1.Text;
}
private void button10_Click(object sender, EventArgs e)
{
textBox1.Text = str+"0";
str = textBox1.Text;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button11_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
textBox1.Text = "";
str = "";
str1 = "+";
}
private void button15_Click(object sender, EventArgs e)
{
i = Convert.ToDouble(textBox2.Text);
j = Convert.ToDouble(textBox1.Text);
if (str1 == "+")
k = i + j;
if (str1 == "-")
k = i - j;
if (str1 == "*")
k = i * j;
if (str1 == "/")
k = i / j;
if (str1 == "%")
k = i % j;
textBox1.Text = k.ToString();
}

29. private void button12_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
textBox1.Text = "";
str = "";
str1 = "-";
}
private void button13_Click(object sender, EventArgs e)
textBox2.Text = textBox1.Text;
str = "";
str1 = "*";
}
private void button14_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
textBox1.Text = "";
str = "";
str1 = "/";
}
private void button20_Click(object sender, EventArgs e)
{
textBox2.Text = textBox1.Text;
textBox1.Text = "";
str = "";
str1 = "%";
}
private void button18_Click(object sender, EventArgs e)
{
this.Close();
}
private void button17_Click(object sender, EventArgs e)
{
if (flag == 0)
{
textBox1.Text = str + ".";

30. str = textBox1.Text;
flag = 1;
}
else
{ str = textBox1.Text;
}
}

32. 13) W.A.P. for Notepad.
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 notepad
public partial class Form1 : Form
)
{
public Form1()
{
InitializeComponent();
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
//Shows the openFileDialog
openFileDialog1.ShowDialog();
//Reads the text file
System.IO.StreamReader OpenFile = new
System.IO.StreamReader(openFileDialog1.FileName);
//Displays the text file in the textBox
txtMain.Text = OpenFile.ReadToEnd();
//Closes the proccess
OpenFile.Close();
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
//Determines the text file to save to
System.IO.StreamWriterSaveFile = new
System.IO.StreamWriter(openFileDialog1.FileName);

33. //Writes the text to the file
SaveFile.WriteLine(txtMain.Text);
//Closes the proccess
SaveFile.Close();
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
//Open the saveFileDialog saveFileDialog1.ShowDialog();
//Determines the text file to save to
System.IO.StreamWriterSaveFile = new
System.IO.StreamWriter(saveFileDialog1.FileName);
//Writes the text to the file
SaveFile.WriteLine(txtMain.Text);
//Closes the process
txtMain.Undo();
}
private void redoToolStripMenuItem_Click(object sender, EventArgs e)
{
txtMain.Undo();
}
private void newToolStripMenuItem_Click(object sender, EventArgs
SaveFile.Close();
}
private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
//Declare prntDoc as a new PrintDocument
printDialog1.ShowDialog();
System.Drawing.Printing.PrintDocument prntDoc =
new
System.Drawing.Printing.PrintDocument();
}
private void printPreviewToolStripMenuItem_Click(object sender, EventArgs
e)
{
printPreviewDialog1.ShowDialog();

34. }
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void undoToolStripMenuItem_Click(object sender, EventArgs e)
{
e)
{
txtMain.Clear();
}
private void cutToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void copyToolStripMenuItem_Click(object sender, EventArgs e)
{
txtMain.Copy();
}
private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
{
txtMain.Paste();
}
private void selectAllToolStripMenuItem_Click(object sender, EventArgs e)
{
txtMain.SelectAll();
}
}
}