The document discusses object-oriented programming concepts in C#, including classes, constructors, destructors, and access modifiers. It provides examples of how to define classes with properties, methods, and constructors. It also explains the differences between public, private, and protected access modifiers and how they control accessibility of class members both within and outside of a class. The document contains code examples demonstrating the usage of classes, constructors, and access modifiers in C#.
The genetic characters transmitted from parent to offspring, taken collectively.
Something, as a quality, characteristic, or other immaterial possession, received from progenitors or predecessors as if by succession.
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@ Kindly Follow my Instagram Page to discuss about your mental health problems-
-----> https://instagram.com/mentality_streak?utm_medium=copy_link
@ Appreciate my work:
-----> behance.net/burhanahmed1
Thank-you !
The genetic characters transmitted from parent to offspring, taken collectively.
Something, as a quality, characteristic, or other immaterial possession, received from progenitors or predecessors as if by succession.
↓↓↓↓ Read More:
@ Kindly Follow my Instagram Page to discuss about your mental health problems-
-----> https://instagram.com/mentality_streak?utm_medium=copy_link
@ Appreciate my work:
-----> behance.net/burhanahmed1
Thank-you !
In this chapter we will understand how to define custom classes and their elements. We will learn to declare fields, constructors and properties for the classes. We will revise what a method is and we will broaden our knowledge about access modifiers and methods. We will observe the characteristics of the constructors and we will set out how the program objects coexist in the dynamic memory and how their fields are initialized. Finally, we will explain what the static elements of a class are – fields (including constants), properties and methods and how to use them properly. In this chapter we will also introduce generic types (generics), enumerated types (enumerations) and nested classes.
In this chapter we will understand how to define custom classes and their elements. We will learn to declare fields, constructors and properties for the classes. We will revise what a method is and we will broaden our knowledge about access modifiers and methods.
Abstract Base Class and Polymorphism in C++Liju Thomas
Connect with me through Facebook and twitter for more details:http://www.facebook.com/lijuthomas24, http://www.twitter.com/lijuthomas24
This ppt explains the concept of abstract base class and Polymorphism in C++
Esoft Metro Campus - Diploma in Information Technology - (Module IX) Programming with C#.NET
(Template - Virtusa Corporate)
Contents:
Introduction to .NET Framework
.NET Framework Platform Architecture
Microsoft Visual Studio
C# Language
C#, VS and .NET Framework Versions
Your First C# Application
Printing Statements
Comments in C#
Common Type System
Value Types and Reference Type
Variables Declaration in C#
Type Conversion
Arithmetic Operators
Assignment Operators
Comparison Operators
Logical Operators
If Statement
If… Else Statement
If… Else if… Else Statement
Nested If Statement
Switch Statement
While Loop
Do While Loop
For Loop
Arrays
Accessing Arrays using foreach Loop
Two Dimensional Arrays
Classes and Objects in C#
Inheritance in C#
Partial Classes
Namespaces
Windows Forms Applications
Using Buttons, Labels and Text Boxes
Displaying Message Boxes
Error Handling with Try… Catch… finally…
Using Radio Buttons
Using Check Boxes
Using List Boxes
Creating Menus
Creating ToolStrips
MDI Forms
Database Application in C#
Creating a Simple Database Application
SQL Insert / Update / Retrieving / Delete
SQL Command Execute Methods
Data Sets
In this chapter we will understand how to define custom classes and their elements. We will learn to declare fields, constructors and properties for the classes. We will revise what a method is and we will broaden our knowledge about access modifiers and methods. We will observe the characteristics of the constructors and we will set out how the program objects coexist in the dynamic memory and how their fields are initialized. Finally, we will explain what the static elements of a class are – fields (including constants), properties and methods and how to use them properly. In this chapter we will also introduce generic types (generics), enumerated types (enumerations) and nested classes.
In this chapter we will understand how to define custom classes and their elements. We will learn to declare fields, constructors and properties for the classes. We will revise what a method is and we will broaden our knowledge about access modifiers and methods.
Abstract Base Class and Polymorphism in C++Liju Thomas
Connect with me through Facebook and twitter for more details:http://www.facebook.com/lijuthomas24, http://www.twitter.com/lijuthomas24
This ppt explains the concept of abstract base class and Polymorphism in C++
Esoft Metro Campus - Diploma in Information Technology - (Module IX) Programming with C#.NET
(Template - Virtusa Corporate)
Contents:
Introduction to .NET Framework
.NET Framework Platform Architecture
Microsoft Visual Studio
C# Language
C#, VS and .NET Framework Versions
Your First C# Application
Printing Statements
Comments in C#
Common Type System
Value Types and Reference Type
Variables Declaration in C#
Type Conversion
Arithmetic Operators
Assignment Operators
Comparison Operators
Logical Operators
If Statement
If… Else Statement
If… Else if… Else Statement
Nested If Statement
Switch Statement
While Loop
Do While Loop
For Loop
Arrays
Accessing Arrays using foreach Loop
Two Dimensional Arrays
Classes and Objects in C#
Inheritance in C#
Partial Classes
Namespaces
Windows Forms Applications
Using Buttons, Labels and Text Boxes
Displaying Message Boxes
Error Handling with Try… Catch… finally…
Using Radio Buttons
Using Check Boxes
Using List Boxes
Creating Menus
Creating ToolStrips
MDI Forms
Database Application in C#
Creating a Simple Database Application
SQL Insert / Update / Retrieving / Delete
SQL Command Execute Methods
Data Sets
oops(object oriented programing ) is introduced in c++ to enhance the 'c' programming. oops concept includes many important concepts like class,objects,abstraction,encapsulation,inheritance etc.
There is great research in the field of data security these days. Storing information digitally in the cloud and transferring it over the internet proposes risks of disclosure and unauthorized access, thus users, organizations and businesses are adapting new technology and methods to protect their data from breaches. In this paper, we introduce a method to provide higher security for data transferred over the internet, or information based in the cloud. The introduced method for the most part depends on the Advanced Encryption Standard (AES) algorithm. Which is currently the standard for secret key encryption. A standardized version of the algorithm was used by The Federal Information Processing Standard 197 called Rijndael for the Advanced Encryption Standard. The AES algorithm processes data through a combination of Exclusive-OR operations (XOR), octet substitution with an S-box, row and column rotations, and a MixColumn operations. The fact that the algorithm could be easily implemented and run on a regular computer in a reasonable amount of time made it highly favorable and successful.
In this paper, the proposed method provides a new dimension of security to the AES algorithm by securing the key itself such that even when the key is disclosed, the text cannot be deciphered. This is done by enciphering the key using Output Feedback Block Mode Operation. This introduces a new level of security to the key in a way in which deciphering the data requires prior knowledge of the key and the algorithm used to encipher the key for the purpose of deciphering the transferred text.
Keywords: Keywords: Keywords: Keywords: Keywords: Keywords: Keywords:
Abstract
There is great research going on in the field of data security nowadays. Protecting information from disclosure and breach is of high importance to users personally and to organizations and businesses around the world, as most of information currently are sensitive electronic information transferred over the internet and stored in cloud based system. In this paper, we propose a method to increase the security of messages transferred on the internet, or information stored in the cloud. Our proposed method mainly relies on the Triple Data Encryption Standard (TDES) algorithm. TDES is intact the Data Encryption Standard repeated three times in succession to encrypt data. TDES is considered highly secure as there is no applicable method to break the code itself without knowing the key. We propose to encrypt the key using Cipher Feedback Block algorithm, before using TDES to encrypt data. Such that even when the key is disclosed, the key itself cannot decipher the ciphered text without enciphering the key with CFB. This introduces a new dimension of security to the TDES algorithm.
The method introduced in this paper increases the security of the TDES algorithm using CFB algorithm by increasing the key security, such that it is actually not possible to decipher the text without prior knowledge and agreement of key and algorithms used.
Keywords: Data Encryption Standard, Triple Data Encryption Algorithm, Cipher Feedback Block.
Abstract
Digital images can be changed easily nowadays through the use of sophisticated software to edit images such as (Adobe Photoshop®). You can look at some manipulated pictures along the lines of the original images without any suspicion that they are also modified. Accordingly, the use of such software to edit the image makes ratification a difficult task and the use of this image in the courts for proving may become impossible.In this paper, a new method has been proposed for water fragile signs depending on the method of Pixel-wise. The proposed method is based on the included secret watermark and check bits in the green layer to the image of the colorful cover with the size of 512x512. The process of including watermark deals with the green class as a chess board with 512 x 512 sizes to avoid the inclusion of sequential bits in the spatial areas of the image of the cover. The process of extracting and discriminating the manipulation of watermark is used to determine whether the manipulation of the image containing watermark was done by an opponent or not. Therefore, the use of the extracted watermark and matrix manipulation to check the image containing watermark sent. Depending on the experimental results, the proposed method provides high quality, low distortion in the images contained watermark PSNR depending on their values. Also, the ability to recognize manipulation in the picture containing watermark in cases such as adding objects to the image containing the watermark, and the application of JPEG compression on image containing watermark, and removing objects from the image containing watermark, repeating the object image containing watermark, and adding a text on image including watermark.
Keywords: Check-bits, Fragile watermarking, PSNR, Secret watermark, Watermarked-image.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
3. 3
Class: is an abstraction model used to define a new Data Type
Which May Contain a Combination of encapsulating Data
(Member Variable) Operation That Can Be Perform On Data
(Member Function) And Accessory to Data (properties).
Member Variable = Field
Member Function = Method
Properties = Attributes
5. 5
Class_name var = new Class_name ();
1. Class can declared before or after main
method
2. Or can be declared before class program.
3. we can change class program to any name
6. 6
// Define Class point
class point
{
public int x;
public int y;
public void setx(int a)
{ x = a; }
public void sety(int b)
{ y = b; }
public int getx()
{ return (x); }
public int gety()
{ return (y); }
}
7. 7
// Calling the Class
private void button1_Click(object sender, EventArgs e)
{
point p = new point();
// p.x = 10;
// p.y = 5;
p.setx(6);
p.sety(7);
textBox1.Text = Convert.ToString(p.getx());
textBox2.Text = Convert.ToString(p.gety());
}
8. 8
// Define Class circle
class circle
{
double radius;
double pi = 3.141;
public double area()
{ return (radius * radius * pi); }
public void set_r(double b)
{ radius = b; }
}
9. 9
// Calling the Class
private void button1_Click(object sender, EventArgs e)
{
circle c = new circle();
double x = Convert.ToDouble(textBox1.Text);
c.set_r(x);
textBox2.Text=Convert.ToString( c.area());
}
10. 10
1. Data Abstraction – it is the act of representing the essential
features without including the background details. Data
Hiding- it is a related concept of data abstraction. Unessential
features are hidden from the world.
2. Data Encapsulation – it is the wrapping of data and associated
functions in one single unit.
3. Inheritance – it is the capability of one class to inherit
properties from other class.
4. Polymorphism – it is the ability for data to be processed in
more than one form.
5. Modularity – it is the concept of breaking down the program
into several module. E.g. : Classes, Structure, etc.
11. 11
// Define Class math
class math
{
public int factorial(int x)
{ int f=1;
for( int i=1; i<=x;i++)
f=f*i; return f;
}
public double pow(double a, double b)
{
double p=Math.pow(a,b);
return p;
}
}
12. 12
// Calling the Class
private void button1_Click(object sender, EventArgs e)
{
math m = new math();
double x = Convert.ToDouble(textBox1.Text);
double y = Convert.ToDouble(textBox2.Text);
int z = Convert.ToInt32(textBox3.Text);
textBox4.Text=Convert.ToString( m.factorial(z));
textBox5.Text=Convert.ToString( m.pow(x,y));
}
13. 13
// Class array Define and Sort // Passing array
class sort
{
int[] ar = new int[10];
public void set_array(int[] a)
{
ar = a;
}
public int[] get_array()
{
Array.Sort(ar); return ((ar));
}
}
14. 14
// Calling the Class
private void button1_Click(object sender, EventArgs e)
{
sort s = new sort();
int[] b = new int[10] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
s.set_array(b);
b=s.get_array();
for (int i = 0; i < 10; i++)
{
textBox1.Text = textBox1.Text + b[i];
}
}
15. 15class stage2
{
public double rnd( double x)
{
double d=Math.Round(x); // to greater than
return(d);
}
public double flor( double y)
{
double f = Math.Floor(y); // to less than
return (f);
}
public string str_up(string a)
{
return (a.ToUpper());
}
16. 16
public string str_dn(string a)
{
return (a.ToLower());
}
public string get_s;
public string set_s;
public void find_array(string[,] s)
{
for (int j = 0; j < 5; j++)
if (get_s == s[0, j])
{
set_s =s[0,j]+":"+s[1,j]+" = "+ s[2, j];
break;
}
}
}
17. 17
private void button1_Click(object sender, EventArgs e)
{
string[,] st = new string[3, 5] { {ID},{NAME},{AVERAGE}};
stage2 s2 = new stage2();
if (comboBox1.Text == “round")
{
double x = Convert.ToDouble(textBox1.Text);
textBox2.Text = Convert.ToString(s2.rnd(x));
}
else if (comboBox1.Text == “floor")
{
double y = Convert.ToDouble(textBox1.Text);
textBox2.Text = Convert.ToString(s2.flor(y));
}
else if (comboBox1.Text == "upper")
{
string s = textBox1.Text;
textBox2.Text = s2.str_up(s);
}
19. 19
1. Searching According to (ID, Name, Code).
2. List of requests and Total Price.
3. Show Expiration Date of products.
ID Product Price Expired Code
101 Paracetamol 3$ 12/1/2019 0x001
102 Panadol 5$ 20/1/2019 0x002
103 Aspirin 4$ 22/1/2019 0x003
104 Flu Out 2$ 18/1/2019 0x004
20. 20
Suppose that we have a school management system, and
we have to build a system to manage students
information and deal with it. According to the following:
1. The school management system contains 100 students.
2. Suppose, there are only three courses.
Find the average of each student depending on Std_ID.
Hint: Store students info. On one array like a table has shown
below:
Std_ID Std_Name Course1 Course2 Course3
1 AA 67 77 92
2 BB 87 90 55
3 CC 75 57 79
21. 21
Homework :: ??? ???
1. Find summation in array[3,3] using class.
2. Print even numbers and odd numbers in array[3,3].
3. Find summation of even numbers and odd numbers
in array[3,3].
4. Exchange even numbers with odd numbers, keep
using same sequence.
5. Find power value of each elements of array[3,3].
6. Find factorial for each elements of array[10].
Hint: Use only one program to do the above questions.!!!
22. 22
Constructor: Is a special method used when an object of class
is created (used to initialize the data member)
Constructor properties
‽ Constructor has the same name of the class.
‽ Constructor do not return value.
‽ Constructor can be overloaded.
‽ Constructor has public access.
23. 23
➢ Default Construction: has no parameters list.
➢ Parameter Construction: has parameters list.
➢ Copy Construction: has object parameter type.
24. 24
class car
{ string model;
double speed;
public car() // Default Construction
{ model = ""; speed = 0; }
public car(string s, double d) // Parameter Construction
{ model = s; speed = d; }
public car(car k) // Copy Construction
{ model = k.model; speed = k.speed; }
}
private void button1_Click(object sender, EventArgs e)
{ car c1 = new car(); // Default Construction
car c2 = new car("toyota", 220); // Parameter Construction
car c3 = new car(c2); // Copy Construction }
25. 25
class home
{
public string floor;
public double price;
public int garanty;
public home()
{ floor = "One"; price = 20000; }
public home(string s, double d, int g)
{ floor = s; price = d; garanty = g; }
public home(home k)
{ floor = k.floor; price = k.price; garanty = k.garanty; }
}
26. 26
home h1 = new home();
home h2 = new home("Two", 60000, 3);
home h = new home("Three", 100000, 5);
home h3 = new home(h);
textBox1.Text = "Floor: " + h1.floor + " Price:" + h1.price + "
Garanty:" + h1.garanty+" Years";
textBox2.Text = "Floor: " + h2.floor + " Price:" + h2.price + "
Garanty:" + h2.garanty+" Years";
textBox3.Text = "Floor: " + h3.floor + " Price:" + h3.price + "
Garanty:" + h3.garanty+" Years";
30. 30
class cafe
{
public int tea;
public int water;
public int nescafe;
public int pepsi;
public int nargila;
public cafe (int a, int b, int c, int d, int e)
{
tea = a; water = b; nescafe = c; pepsi = d; nargila = e;
}
}
32. 32
➢ Is a method called once an object is disposed, can be used to
cleanup recourse used by the object.
➢ Destructors only used with classes.
➢ A class can only have one destructor.
➢ Destructor cannot be inherited or overloaded.
➢ Destructor cannot be called, They are invoked automatically.
➢ Destructors cannot take a modifiers or have parameters.
~car ()
{
MessageBox.Show("car object is dead");
}
33. 33
All types and members have an accessibility level, which controls
whether they can be used from other code in your assembly or
other assemblies. You can use the following access modifiers to
specify the accessibility of a type or member when you declare it:
Public: The type or member can be accessed by any other code in the
same assembly or another assembly that references it.
Private: The type or member can be accessed only by code in the same
class or structure.
Protected: The type or member can be accessed only by code in the
same class or structure, or in a class that is derived from that class.
Internal: The type or member can be accessed by any code in the same
assembly, but not from another assembly.
34. 34
The public keyword is an access modifier for types and type
members. Public access is the most permissive access level.
There are no restrictions on accessing public members.
Accessibility:
1. Can be accessed by objects of the class
2. Can be accessed by derived classes
Example: In the following example num1 is direct access.
35. 35
Private access is the least permissive access level.
Private members are accessible only within the body of the class or the
structure in which they are declared.
Accessibility:
1. Cannot be accessed by object
2. Cannot be accessed by derived classes
Example: In the following example num2 is not accessible outside the
class.
36. 36
using System;
namespace AccessModifiers
{ class Program
{ class AccessMod
{ public int num1;
int num2; }
private void button1_Click(object sender, EventArgs e)
{ AccessMod ob1 = new AccessMod();
//Direct access to public members
ob1.num1 = 100;
//Access to private member is not permitted
ob1.num2 = 20;
Console.WriteLine("Number one value in main {0}",
ob1.num1);
Console.ReadLine(); } } }
The above program will give compilation error, as access to private is
not permissible. In the below figure you can see the private member
num2 is not available.
38. 38
A protected member is accessible from within the class in which it
is declared, and from within any class derived from the class that
declared this member.
A protected member of a base class is accessible in a derived class
only if the access takes place through the derived class type.
Accessibility:
Cannot be accessed by object
Only by derived classes
39. 39
class Base
{ protected int num1; }
class Derived : Base
{ public int num2; }
private void button1_Click(object sender, EventArgs e)
{
Base ob1 = new Base();
Derived ob2 = new Derived();
ob2.num1 = 20;
// Access to protected member as it is inherited by the Derived class
ob2.num2 = 90;
} } }
In the above program we try to access protected member in main it
is not available as shown in the picture below that num1 is not
listed.