DOT NET
Sr. No. Experiments
1 To find out the sum of digits of a number and also find out its reverse.
2 To print all the prime numbers between two numbers.
3 To find out all the occurrences of a element from a given array.
4 To find out frequency of each digit for a array without using any conditional statement
5 Create a class with followings
- Properties
- Method Overlooking
6 Write a program to implement multilevel inheritance. It should include constructors and method
overriding
7 Create a class Time with data members Hours, Minutes and Second . Overload + >, <, ==, !=
operators
8 Write a program to implement run time polymorphism.
9 Create a generic class which contains an array and methods to
-display the elements of array.
-find out sum of elements of array
10 Write a program to implement an indexer.
11 What is assembly, Create private and shared assembly. Explain the step-by-step process.
12 Develop a calculator in Windows application.
13 Design and develop a notepad in Windows application.
14 Create a Windows form with two list boxes and implement following
Add new elements in the list box
Delete elements from list box
Delete all elements from list box
Transfer elements from one list box to another
15 Design a Login Page, which displays a Welcome Page on successful Login and an error message in
case of invalid Id/Password.
16 Develop a web page and apply themes dynamically.
17 Implement state management to Login page application using at least two state management
methods.
18 Design any web form and apply various validation controls.
19 Create any database table and apply basic operations (Insert/Delete/Update) on it using ASP.NET
application.
20 Create any web service and design a web page to use it.
21 Develop any web application to illustrate SQL Injection attack and redesign it to prevent the
1.To find out the sum of digits of a number and also find out its reverse.
using System;
class Program
{
static void Main()
{
Console.Write("Enter a number: ");
int num = int.Parse(Console.ReadLine());
int sum = 0, reverse = 0, temp = num;
while (temp > 0)
{
int digit = temp % 10;
sum += digit;
reverse = reverse * 10 + digit;
temp /= 10;
}
Console.WriteLine($"Sum of digits: {sum}");
Console.WriteLine($"Reverse of the number: {reverse}");
}
}
2. To print all the prime numbers between two numbers.
using System;
class Program
{
static void Main()
{
Console.Write("Enter the start number: ");
int start = int.Parse(Console.ReadLine());
Console.Write("Enter the end number: ");
int end = int.Parse(Console.ReadLine());
Console.WriteLine("Prime numbers between {0} and {1}:", start, end);
for (int i = start; i <= end; i++)
{
if (IsPrime(i))
Console.Write(i + " ");
}
}
{
static bool IsPrime(int num)
if (num < 2) return false;
for (int i = 2; i <= Math.Sqrt(num); i++)
{
if (num % i == 0) return false;
}
return true;
}
}
3. To find out all the occurrences of a element from a given array.
using System;
class Program
{
static void Main()
{
int[] arr = { 1, 2, 3, 4, 2, 5, 2 };
Console.Write("Enter the element to find: ");
int element = int.Parse(Console.ReadLine());
Console.WriteLine("Occurrences of {0} are at indices:", element);
for (int i = 0; i < arr.Length; i++)
{
if (arr[i] == element)
Console.WriteLine(i);
}
}
}
4. To find out frequency of each digit for a array without using any conditional
statement.
using System;
class Program
{
static void Main()
{
int[] arr = { 1, 2, 2, 3, 4, 3, 5, 3, 6, 7 };
int[] frequency = new int[10];
foreach (int num in arr)
{
frequency[num]++;
Console.WriteLine("Digit frequencies:");
for (int i = 0; i < frequency.Length; i++)
}
{
Console.WriteLine($"{i}: {frequency[i]}");
}
}
}
5. Create a class with followings
- Properties
- Method Overlooking
using System;
class MyClass
{
public string Name { get; set; }
public int Value { get; set; }
public void Display(string message)
{
Console.WriteLine(message);
public void Display(int number)
}
{
Console.WriteLine($"Number: {number}");
}
class Program
}
{
static void Main()
{
MyClass obj = new MyClass { Name = "Test", Value = 42 };
obj.Display("Hello World");
obj.Display(123);
}
}
6. Write a program to implement multilevel inheritance. It should include constructors
and method overriding.
using System;
class A
{
public A()
{
Console.WriteLine("Constructor of Class A");
public virtual void Display()
}
{
Console.WriteLine("Display method of Class A");
}
class B : A
}
{
public B()
{
Console.WriteLine("Constructor of Class B");
public override void Display()
}
{
Console.WriteLine("Display method of Class B");
}
class C : B
}
{
public C()
{
Console.WriteLine("Constructor of Class C");
public override void Display()
}
{
Console.WriteLine("Display method of Class C");}
}
class Program
{
static void Main()
{
C obj = new C();
obj.Display();
}
}
7. Create a class Time with data members Hours, Minutes and Second . Overload + >,<,
==, != operators.
using System;
class Time
{
public int Hours { get; set; }
public int Minutes { get; set; }
public int Seconds { get; set; }
public static Time operator +(Time t1, Time t2)
{
int totalSeconds = t1.Seconds + t2.Seconds + (t1.Minutes + t2.Minutes) * 60 + (t1.Hours +
t2.Hours) * 3600;
totalSeconds % 60 };
return new Time { Hours = totalSeconds / 3600, Minutes = (totalSeconds / 60) % 60, Seconds =
}
public static bool operator >(Time t1, Time t2) => t1.ToSeconds() > t2.ToSeconds();
public static bool operator <(Time t1, Time t2) => t1.ToSeconds() < t2.ToSeconds();
public static bool operator ==(Time t1, Time t2) => t1.ToSeconds() == t2.ToSeconds();
public static bool operator !=(Time t1, Time t2) => !(t1 == t2);
public override bool Equals(object obj) => this == (Time)obj;
public override int GetHashCode() => ToSeconds();
private int ToSeconds() => Hours * 3600 + Minutes * 60 + Seconds;
public override string ToString() => $"{Hours:D2}:{Minutes:D2}:{Seconds:D2}";
class Program
}
{
static void Main()
{
Time t1 = new Time { Hours = 2, Minutes = 30, Seconds = 40 };
Time t2 = new Time { Hours = 1, Minutes = 45, Seconds = 20 };
Time t3 = t1 + t2;
Console.WriteLine($"Sum of times: {t3}");
Console.WriteLine($"t1 > t2: {t1 > t2}");Console.WriteLine($"t1 == t2: {t1 == t2}");
}
}
8. Write a program to implement run time polymorphism.
using System;
class Base
{
public virtual void Display()
{
Console.WriteLine("Display of Base");
}
class Derived : Base
}
{
public override void Display()
{
Console.WriteLine("Display of Derived");
}
class Program
}
{
static void Main()
{
Base obj = new Derived();
obj.Display();
}
}
9. Create a generic class which contains an array and methods to
-display the elements of array.
-find out sum of elements of array
using System;
class GenericArray<T> where T : struct
{
private T[] elements;
public GenericArray(T[] elements)
{
this.elements = elements;
public void Display()
}
{
foreach (T element in elements)
{
Console.WriteLine(element);
}
public T Sum()
}
{
dynamic sum = 0;
foreach (T element in elements)
{
sum += element;
}
return sum;
}
class Program
}
{
static void Main(){
int[] numbers = { 1, 2, 3, 4, 5 };
GenericArray<int> array = new GenericArray<int>(numbers);
Console.WriteLine("Elements of the array:");
array.Display();
Console.WriteLine($"Sum of elements: {array.Sum()}");
}
}
10. Write a program to implement an indexer.
using System;
class MyArray
{
private int[] arr;
public MyArray(int size)
{
arr = new int[size];
public int this[int index]
}
{
get => arr[index];
set => arr[index] = value;
}}
class Program
{
static void Main()
{
MyArray array = new MyArray(5);
for (int i = 0; i < 5; i++)
{
array[i] = i + 1;
for (int i = 0; i < 5; i++)
}
{
Console.WriteLine(array[i]);
}}}
11. What is assembly .Create private and shared assembly. Explain the step by step
process.
Assembly in .NET is a compiled code library used for deployment, versioning, and security. It consists of a single .exe
or .dll file and serves as the fundamental unit of deployment in .NET applica?ons. Assemblies contain code,
resources, and metadata, and are classified into private and shared assemblies:
Private Assembly: Used by a single applica?on. It is stored in the applica?on’s directory and does not need a strong
name.
Shared Assembly: Used by mul?ple applica?ons. It is typically stored in the Global Assembly Cache (GAC) and
requires a strong name for versioning and security.
Steps to Create a Private Assembly
1. Write the class code.
2. 3. 4. Compile it into a .dll file.
Place the .dll in the applica?on’s directory.
Reference and use the assembly in your applica?on.
// MyPrivateAssembly.cs
namespace MyNamespace
{
public class MyClass
{
public void HelloWorld()
{
Console.WriteLine("Hello, World!");
}
}
}
Steps to Create a Shared Assembly
1. 2. 3. 4. 5. Generate a strong name key.
Write the class code and add the strong name.
Compile it into a .dll file.
Install the .dll in the Global Assembly Cache (GAC).
Reference and use the assembly in other applicaEons from the GAC.
sn -k MySharedAssembly.snk // install
// MySharedAssembly.cs
namespace MySharedNamespace
{
public class MySharedClass
{
public void SayHello()
{
Console.WriteLine("Hello from Shared Assembly!");
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