Coder Baba

6-🚩 myCars.ForEach(p => Console.WriteLine(“{0} {1:C}”, p.VIN, p.StickerPrice)); 7-🚩 Console.WriteLine(myCars.Exists(p => p.Model == “745li”)); 8-🚩 Console.WriteLine(myCars.Sum(p => p.StickerPrice)); 9-🚩 foreach (var car in orderedCars) { Console.WriteLine(“{0} {1}”, car.Year, car.Model, car.VIN); }

⛳️LINQ in ASP .NET (short Note by Coderbaba)⛳️ ⚡️LINQ: Language Integrated Query 👉🏻-it is a Query Language that is pronounced as "link" is designed and introduced by Microsoft for .NET technology that addds data querying capabilities to .NET Languages . 👉🏻-LINQ introduced in .NET 3.5 (Visual Studio 2008) using LINQ we can write Queries on Array, Collections, XML Source and Relational Databases. 👉🏻-LINQ is as same as SQL but sql can be used only on relational database but linq can be used on a wide variety of data sources like Array,Collections, XML source and Relational databases. 👉🏻-Query expressions are written in a declarative query syntax.By using query syntax, you can perform filtering , ordering , and grouping operations on data sources with a minimum of code. 👉🏻-LINQ query expressions, are similar to ⛳️LINQ is divided into 3 parts, those are:⛳️ 1-LINQ to Objects : => Array and Collection 2-LINQ to XML (XLINQ): => XML Source 3-LINQ to Database: Relational Database (SQL Server) Note: ---------------------- 🚀linq to obj: this type of programming called imperative programming. 🚀linq to database: it is called as declarative programming. ------------------- All LINQ query operations consist of three distinct actions: 1-Obtain the data source 2-Create the query 3-Execute the query 😎LINQ Query Expressions: LINQ query expressions are witten in a declarative SQL like syntax. Example: get those student name from array which has more than 3 characters: ------------ string studentName={"Raj","Mohan","John","Sima","Tanu"}; IEnumerable<string> subset= from n in studentName where n.Length>3 orderby n select n; foreach (string s in subset) Console.WriteLine("Name:{0}",s); ----------------------------- 👉🏻-The standard query operators provide query capabilities including *Filtering-where *Project-select,selectMany *Aggregation-Sum,Max,Count,Average *Sorting-orderby *Grouping-groupby *...and many more ----------------- 🌎Query Expression Trees: A query expression trees is an efficient data structure representing a LINQ expression - type of abstract syntax tree used for storing parsed expresssions from the source code. -Lambda expressions often translate into query expression trees. IQueryable<T> is interface implemented by query providers (e.g. LINQ to SQL, LINQ to XML, LINQ to Obj) IQueryable<T> objects use expression trees -------------------------------------------- ⛳️LINQ to SQL:⛳️ ----------------- Select Statement SQL: Select * from Customer where City="India" LINQ: var q =from c in Customer where c.City=="India" select c; ⛳️Why LINQ Beats SQL:⛳️ ------------------- -SQL is a very old langauage invented in 1974. since then it is been extended endlessly, but never redesigned and this has made the language messy. -LINQ is the language with syntax of C# and Visual Basic simpler,tidier and higher level Ex: SQL: select UPPER(Name) from Customer where Name LIKE'A%' Order by Name LINQ: var qr=from c in Customer where c.Name.StartsWith("A") orderby c.Name select c.Name.ToUpper(); ------------------ Simpler how? ex: 💻SQL query: select top 10 Upper(c1.Name) from Customer c1 where c1.Name LIKE 'A%' AND c1.ID NOT IN ( select Top 20 c2.ID from Customer c2 where c2.Name LIKE 'A%' Order by c2.Name )Order by c1.Name 💻LINQ: var qr=from c in Customer where c.Name.StartsWith("A") orderby c.Name select c.Name.ToUpper(); var result=query.Skip(20).Take(10); ------------------------------------- 🏆Example code : 🧜‍♂️LINQ Query:- 1-👉🏻 var bmws = from car in myCars where car.Make == “BMW” && car.Year == 2010 select car; 2-👉🏻 var orderedCars = from car in myCars orderby car.Year descending select car; // LINQ method: 1-🚩 var bmws = myCars.Where(p => p.Make == “BMW” && p.Year == 2010); 2-🚩 var orderedCars = myCars.OrderByDescending(p => p.Year); 3-🚩 var firstBMW = myCars.OrderByDescending(p => p.Year).First(p => p.Make == “BMW”); Console.WriteLine(firstBMW.VIN); 4-🚩 Console.WriteLine(myCars.TrueForAll(p => p.Year > 2007)); 5-🚩 myCars.ForEach(p => p.StickerPrice -= 3000);

Shopping Website: https://www.youtube.com/playlist?list=PLMoluEXvWXK4cAOkQmnNguk4O5vx84oQ4 SQL Server: https://www.youtube.com/playlist?list=PLMoluEXvWXK4B35oqCvC8iLq-E-7EV9Mg Python: https://www.youtube.com/playlist?list=PLMoluEXvWXK4Ji15P81Dcixl14QytPSWq

sharing some Interview questions #sql #intermediate 1. How to select random rows from a table? -> Using the RAND() function in combination with ORDER BY and LIMIT. In Mysql we use RAND() which returns random records from table. SELECT * FROM table_name ORDER BY RAND() LIMIT 5; 2. How to find the last id in a table? -> By using MAX(), We use following syntax SELECT id FROM table_name ORDER BY id DESC LIMIT 1; 3. How to find the values in a text column of a table that start with a certain letter? -> Using the LIKE operator in combination with the % and _ wildcards. For example, we need to find all surnames in a table that start with "A". The query is: SELECT * FROM table_name WHERE surname LIKE 'A_';

Complete Library Project: https://www.youtube.com/playlist?list=PLMoluEXvWXK7iAOcTw4AndY-ZwIOKlKZP

Asp .Net C# webform Tutorial: https://www.youtube.com/playlist?list=PLMoluEXvWXK6Q1h-5vVX4tzX7-O2FdgZA

Asp.net MVC Tutorial: https://www.youtube.com/playlist?list=PLMoluEXvWXK5OxieFW5ogrkdeMp9GgaYv

Computer Network Notes https://youtube.com/playlist?list=PLMoluEXvWXK6HM1_COAs7-d09jbfRe7e2&si=kzcdJH1RC5I9IY4t

🌟☕️ Let's Connect over Coffee! ☕️🌟 Hey there, Coder fam! 👋 Are you enjoying the content and insights I share? Let's take our connection to the next level! How about buying me a coffee? ☕️ Your support means the world to me, and a virtual coffee not only keeps me fueled but also fuels the creation of more valuable content for you. Plus, it's a great way to show your appreciation! Just click the link below to treat me to a cup, and let's chat over a virtual coffee date soon. Can't wait to connect with you! [Link to Buy Me a Coffee] https://www.instamojo.com/@coderbaba #CoffeeTime #Support #Connection #Coderbaba #dotnet #coding #project

🍔📈 Exciting News: Introducing Fast Food Restaurant Management System! 📈🍟 Looking for an efficient way to manage your fast food restaurant? Say hello to our latest desktop application: Fast Food Restaurant Management System, built using C# .NET and SQL Server database. Key Features: Efficient Order Management: Streamline your order processing and enhance customer service. Inventory Tracking: Keep track of your inventory in real-time and never run out of stock. Employee Management: Easily manage your staff schedules and payroll. Detailed Reporting: Gain valuable insights into your restaurant's performance with comprehensive reports. User-Friendly Interface: Intuitive design for easy navigation and usage. What's Included: Source code for complete customization SQL Server database for seamless data management Empower your fast food business with our robust management system. https://coderbaba.myinstamojo.com/product/4973520/fast-food-restaurant-management-system-built/

🍔📈 Introducing: Fast Food Restaurant Management System 📈🍟 Title of Project: Fast Food Restaurant Management System About Project: Our Fast Food Restaurant Management System is a comprehensive solution designed to streamline operations for fast food restaurants. Crafted with precision using C# .NET & SQL Server, this system empowers restaurant owners to efficiently manage orders, track inventory, and enhance customer service. Software Requirement: Visual Studio (2019 or latest version) SQL Server (2016 or latest version) Crystal Report Frontend Technology: C# .NET Backend Technology: SQL Server Database: The project utilizes SQL Server for robust database management. Admin and User Modules: Admin Module: Enables administrators to manage orders, inventory, employees, and generate reports. User Module: Allows users to place orders, view menu items, and track order status. Key Features: Order management Inventory tracking Employee management Reporting and analytics User-friendly interface Seamless integration with Crystal Report for detailed insights This project includes over 30 WinForms and Crystal Report, ensuring a comprehensive solution tailored to the needs of fast food restaurants. Revolutionize your restaurant's operations today with our Fast Food Restaurant Management System! 🚀🍕 #coderbaba #projectsourcecode #finalyearproject #coding #programming #dotnet #FinalYearProject #RestaurantManagement #CSharp #DotNet #SQLServer #WinForms #CrystalReport #Efficiency #CustomerService #TechSolution 📊💼 https://coderbaba.myinstamojo.com/product/4973520/fast-food-restaurant-management-system-built/

Complete Ethical Hacking Roadmap 👇👇 1. Introduction to Ethical Hacking - Definition - Purpose - Types of Hackers - Legal and Ethical Considerations 2. Networking Basics - TCP/IP - OSI Model - Subnetting - DNS - DHCP 3. Operating Systems - Linux - Windows - macOS - Command Line Basics 4. Cybersecurity Fundamentals - Encryption - Firewalls - Antivirus - IDS/IPS 5. Programming Languages - Python - Javascript - Bash Scripting - SQL - C/ C++/ Java/ Ruby 6. Scanning and Enumeration - Port Scanning - Service Enumeration - Vulnerability Scanning 7. Exploitation - Common Vulnerabilities and Exploits - Metasploit Framework - Buffer Overflows 8. Web Application Security - OWASP Top Ten - SQL Injection - Cross-Site Scripting (XSS) 9. Wireless Network Hacking - Wi-Fi Security - WEP, WPA, WPA2 - Wireless Attacks 10. Social Engineering - Phishing - Spear Phishing - Social Engineering Toolkit (SET) 11. Sniffing and Spoofing - Man-in-the-Middle Attacks - ARP Spoofing - DNS Spoofing 12. Malware Analysis - Types of Malware - Sandbox Analysis - Signature-Based and Behavior-Based Detection 13. Incident Response and Handling - Incident Response Process - Digital Forensics - Chain of Custody 14. Penetration Testing - Types of Penetration Testing - Methodology - Reporting 15. Cryptography - Symmetric and Asymmetric Encryption - Hashing Algorithms - Digital Signatures 16. Mobile Hacking - Android and iOS Security - Mobile Application Security 17. Cloud Security - AWS, Azure, Google Cloud - Security Best Practices 18. IoT Security - Internet of Things Risks - Securing IoT Devices 19. Legal and Compliance - Computer Fraud and Abuse Act (CFAA) - GDPR, HIPAA, PCI DSS 20. Cybersecurity Tools - Nmap, Wireshark, Burp Suite - Snort, Nessus, Aircrack-ng 21. Career Path and Certifications - Certified Ethical Hacker (CEH) - Offensive Security Certified Professional (OSCP) - CISSP, CompTIA Security+ ---------------------------------------------------------

Ready to level up your JavaScript skills? Join the journey! 🔥👩‍💻👨‍💻 #coderbaba @coder_baba #JavaScriptInterview #WebDev #TechTalk #CodingChallenge #FollowForMore #ProgrammingJourney 🚀🔥

🚀 JavaScript Interview Prep for 2024! 💡🔍 Ready to rock your JavaScript interviews? Here are 50 questions to brush up on your skills and impress your future employers! 🌐💻 Dive deep into the world of JavaScript with questions ranging from the fundamentals to advanced concepts. 🚀 🤓 Sample Questions: 🌐 What is JavaScript? #JavaScriptBasics 🤔 What are the data types in JavaScript? #DataTypesJS ❓ What is the difference between null and undefined? #JSConcepts 📜 Explain the concept of hoisting in JavaScript. #JavaScriptHoisting 🔄 What is a closure in JavaScript? #JavaScriptClosure 🤷‍♂️ What is the difference between “==” and “===” operators in JavaScript? #EqualityOperatorsJS 🔄 Explain the concept of prototypal inheritance in JavaScript. #JSInheritance 📚 What are the different ways to define a function in JavaScript? #JSFunctions 🕹 How does event delegation work in JavaScript? #EventDelegationJS 💼 What is the purpose of the “this” keyword in JavaScript? #ThisKeywordJS 🏗 What are the different ways to create objects in JavaScript? #JSObjects 📞 Explain the concept of callback functions in JavaScript. #CallbackFunctionsJS 🌊 What is event bubbling and event capturing in JavaScript? #EventBubblingJS 🤝 What is the purpose of the “bind” method in JavaScript? #BindMethodJS 🌐 Explain the concept of AJAX in JavaScript. #AJAXinJS 🔄 What is the “typeof” operator used for? #TypeOfOperatorJS ❌ How does JavaScript handle errors and exceptions? #JSErrorHandling 🔄 Explain the concept of event-driven programming in JavaScript. #EventDrivenJS ⏩ What is the purpose of the “async” and “await” keywords in JavaScript? #AsyncAwaitJS 🔍 What is the difference between a deep copy and a shallow copy in JavaScript? #JavaScriptCopy 🧠 How does JavaScript handle memory management? #JSMemoryManagement 🔄 Explain the concept of the event loop in JavaScript. #EventLoopJS 🗺 What is the purpose of the “map” method in JavaScript? #MapMethodJS 🤝 What is a promise in JavaScript? #PromisesJS ⚠️ How do you handle errors in promises? #PromiseErrorsJS 🍛 Explain the concept of currying in JavaScript. #CurryingJS ➰ What is the purpose of the “reduce” method in JavaScript? #ReduceMethodJS ↔️ What is the difference between “null” and “undefined” in JavaScript? #NullVsUndefinedJS 🔂 What are the different types of loops in JavaScript? #LoopsJS 🔄 What is the difference between “let,” “const,” and “var” in JavaScript? #LetConstVarJS 🌐 Explain the concept of event propagation in JavaScript. #EventPropagationJS 📄 What are the different ways to manipulate the DOM in JavaScript? #DOMManipulationJS 🗄 What is the purpose of the “localStorage” and “sessionStorage” objects? #StorageObjectsJS ⏭ How do you handle asynchronous operations in JavaScript? #AsyncOperationsJS 🔍 What is the purpose of the “forEach” method in JavaScript? #ForEachMethodJS 🔀 What are the differences between “let” and “var” in JavaScript? #LetVsVarJS 🧠 Explain the concept of memoization in JavaScript. #MemoizationJS 🔄 What is the purpose of the “splice” method in JavaScript arrays? #SpliceMethodJS 🔄 What is a generator function in JavaScript? #GeneratorFunctionJS 🧐 How does JavaScript handle variable scoping? #VariableScopingJS 📏 What is the purpose of the “split” method in JavaScript? #SplitMethodJS 🔄 What is the difference between a deep clone and a shallow clone of an object? #CloneObjectJS 🤝 Explain the concept of the event delegation pattern. #EventDelegationPatternJS ↔️ What are the differences between JavaScript’s “null” and “undefined”? #NullVsUndefinedJS 📣 What is the purpose of the “arguments” object in JavaScript? #ArgumentsObjectJS 📚 What are the different ways to define methods in JavaScript objects? #MethodsInJS 🧠 Explain the concept of memoization and its benefits. #MemoizationBenefitsJS ↔️ What is the difference between “slice” and “splice” in JavaScript arrays? #SliceVsSpliceJS 🔄 What is the purpose of the “apply” and “call” methods in JavaScript? #ApplyCallMethodsJS 🔄 Explain the concept of the event loop in JavaScript and how it handles asynchronous operations. #EventLoopJS

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