C# Windows Programming [Urdu/Hindi] - Lecture # 10 - LINQ in C#

Описание: #csharp #windowsforms #visualstudio

🔗 Get the Source Code:
https://github.com/onlyehtisham/APTCo...

Welcome to your ultimate guide to LINQ in C#! Whether you're a beginner looking to understand the fundamentals or an intermediate developer aiming to solidify your knowledge, this comprehensive lecture covers everything you need to know about Language Integrated Query (LINQ).
LINQ is one of the most powerful and elegant features in C#, allowing you to query data from various sources (like collections, databases, XML) using a consistent, SQL-like syntax right inside your C# code. In this in-depth tutorial, we break down LINQ from the ground up.
📚 What You'll Learn:
• Introduction to LINQ: What is LINQ and why is it so useful?
• The Two Syntaxes: A thorough comparison and demonstration of both:
o Query Syntax (SQL-like, readable)
o Method Syntax (Lambda-based, powerful and fluent)
• Core LINQ Operators: Detailed examples for each crucial operator:
o Filtering: Where (to filter data based on conditions)
o Projection: Select (to shape and transform data)
o Sorting: OrderBy & OrderByDescending
o Grouping: GroupBy (to organize data into groups)
o Aggregation: Count, Sum, Average, Max, Min
o Set Operations: Distinct (to remove duplicates)
• Practical Examples: We'll apply these concepts to real-world scenarios with a sample collection of objects, so you can see exactly how LINQ works in practice.
💡 Code Examples Included:
We'll work with a sample List to demonstrate how to:
• Find sales by product name.
• Filter sales greater than $500.
• Order by amount descending.
• Group by category.
• Distinct regions.
• Total sales amount (Sum)
• And much more!
By the end of this video, you will be confident in using both LINQ syntaxes to write cleaner, more efficient, and more expressive data querying code in your C# applications.
👨💻 Who Is This For?
• C# Beginners moving to intermediate topics.
• .NET Developers who want a solid LINQ foundation.
• Programmers coming from other languages (like SQL) wanting to learn C# data querying.
Don't forget to like, subscribe, and hit the bell icon 🔔 to get notified when I post new videos! Let me know in the comments which C# topic you'd like me to cover next.
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Timestamps
00:00 – Introduction to LINQ
01:04 – Benefits of LINQ
01:37 – First LINQ Example
07:35 – LINQ Query Syntax vs. Method Syntax
04:42 – The WHERE Operator (Filtering)
10:21 – The SELECT Operator (Projection)
12:23 – ORDERBY and ORDERBYDESCENDING
16:16 – GROUPBY
25:52 – DISTINCT
27:09 – Aggregation Operators (Count, Sum, Average, Max, Min)
31:30 – LINQ on Advance Collections
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