Results for “C#”
30 result(s) in everything
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Blog
TCS CodeVita Season 14 (2026): Dates, Eligibility, Format and Prep Plan
TCS CodeVita Season 14: registration closes 13 Nov 2026, pre-qualifier 11–12 Dec. Eligibility, the 3-hour format, languages and a six-week prep plan.
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Types of SQL Server Joins with Examples
A join in SQL Server combines rows from two or more tables based on a related column. The type of join decides which rows survive: an INNER JOIN keeps only…
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.NET AI Engineer Roadmap 2026–27: From Modern C# to Production AI
A stage-by-stage path to becoming a .NET AI engineer: modern C#, backend skills, LLMs and RAG, Semantic Kernel and MCP, Azure deployment, production AI and the projects that get you hired.
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Entity Framework Core Database-First Tutorial
Database-first in EF Core means you point a tool at an existing SQL Server database and it generates the entity classes and DbContext for you, instead of you…
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Fresher and Internship Openings This Week: American Express, Cisco, C-DAC and More (Oct 2026)
Fresher and internship openings at American Express, Cisco, C-DAC, GlobalLogic, GoTrust and Sutherland: eligibility, pay, deadlines and how to apply.
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Azure for .NET Developers — Part 7: Create and Automate VMs with the Azure SDK
The modern Azure.ResourceManager SDK end to end: resource group, network, and a Linux VM with SSH keys from C#, plus scheduled start/stop to keep the bill sane.
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Render a Partial View with a Model in ASP.NET Core MVC
To render a partial view with a strongly-typed model in ASP.NET Core MVC, use the <partial tag helper and pass the model through its model attribute:…
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Python for .NET Developers: A Practical First Project
Coming from C#? Learn Python by building a small REST API with FastAPI — virtual environments demystified, Pydantic as your model binding, and a side-by-side C# to Python cheat sheet.
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Modern .NET Backend Roadmap — Part 8: CI/CD with GitHub Actions
Automate build, smoke test, image, and deployment with GitHub Actions: SHA-tagged images, OIDC federation to Azure, environments with approvals, and pipeline hygiene.
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What Is AutoMapper in .NET Core? Usage and Modern Alternatives
What AutoMapper is and how to use it in ASP.NET Core Web API, its 2025 licensing change, and modern alternatives: hand-written mapping and Mapperly.
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Export SQL Data to Excel in C# Without Office Interop (ClosedXML)
Export SQL Server data to Excel in C# with ClosedXML instead of Office Interop: no Office install, safe on servers and containers, with a Web API download.
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C# DataTable to CSV, List or JSON: Convert and Export in .NET
Convert or export a C# DataTable to CSV, a typed List<T> or a JSON string with three reusable extension methods that handle commas, quotes and DBNull.
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Working with Strings and Text in Python
Work with Python strings: indexing and slicing, immutability, the most useful methods, f-strings, and formatting.
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Using Fluent API in EF Core Code First
EF Core Fluent API configuration in OnModelCreating — tables, columns, keys, indexes, relationships, query filters, value conversions, and when to prefer it over DataAnnotations.
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RESTful CRUD Operations with ASP.NET Core Minimal APIs
To build a RESTful CRUD API in ASP.NET Core, model each entity as a resource, map the four HTTP verbs (GET, POST, PUT, DELETE) to read/create/update/delete,…
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AJAX Calls with JsonResult in ASP.NET Core MVC — fetch and jQuery
Return JSON from ASP.NET Core MVC actions and call them from the browser — the fetch API for modern pages, jQuery $.ajax for legacy ones, POSTing JSON with FromBody, and common pitfalls.
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How to Implement Dependency Injection in .NET Core
To implement dependency injection in .NET Core, register your services in the built-in container (IServiceCollection) with a lifetime, then declare each…
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Compare DataTables with LINQ: Except, Intersect and Union
To compare two ADO.NET DataTable objects, call AsEnumerable() on each to get a sequence of DataRow, then apply LINQ set operators: Except gives rows in the…
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OUTER APPLY and CROSS APPLY in SQL Server with Examples
Per-row table expressions: top-N-per-group queries, passing row values into table-valued functions, APPLY (VALUES) for named expressions, and when plain JOIN is all you need.
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MongoDB Docker Image: Run MongoDB in Docker and Connect from .NET
Run MongoDB from the official Docker image with one command, keep data in a volume, and connect from .NET: queries, atomic updates, transactions and indexes.
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Create and Connect an Azure Linux VM with an SSH Key Pair
Create an SSH key pair with ssh-keygen, provision an Azure Ubuntu VM that accepts only that key using the Azure CLI, connect, and harden access — with cleanup commands.
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A Brief History of Java: From Oak to Java 27
A short tour of Java's history, from the Green Project and Oak in 1991 to Java 27 in 2026: the key releases, the move to open source, the Oracle era and modern Java.
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Azure for .NET Developers — Part 5: Blob Storage, Queues, and SAS Tokens That Expire Properly
BlobServiceClient with DefaultAzureCredential, access tiers and lifecycle rules, and user-delegation SAS links that expire in minutes instead of account keys that never do.
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WCF Test Client: How to Test WCF Services with WcfTestClient.exe
Find, launch, and use WCF Test Client: add a service by WSDL, invoke operations with complex parameters, read the SOAP XML, fix the classic quota errors, and know its limits.
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Modern .NET Backend Roadmap — Part 6: Docker
Package the API as a container: multi-stage Dockerfile, layer-cache-friendly restore, non-root user, and the two real build failures you will hit — verified with a running container.
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Training
TCS CodeVita Bootcamp with C++ and DSA — TCS CodeVita Bootcamp with C++ and DSA – Evening Batch, Oct 2026
Crack TCS CodeVita: contest-style problem solving in C++ and DSA, from reading long problems to graphs and dynamic programming, with mock contests and a full 3-hour CodeVita mock on GeeksArray.
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SQL Server Constraints with Examples
All six constraint types on one table — PRIMARY KEY, UNIQUE, CHECK, DEFAULT, FOREIGN KEY, NOT NULL — each violated on purpose so you see the real errors, plus naming and FK-index guidance.
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CTE in SQL Server: Common Table Expressions with Examples
What a CTE is in SQL Server and how to use it: replacing subqueries, top-N per group, chaining CTEs, recursive CTEs for hierarchies, and CTE vs temp table.
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EF Core Code First Migrations with DataAnnotations Attributes
Shape your SQL Server schema with DataAnnotations — Table, Column, Key, Required, MaxLength, Index, Timestamp, ConcurrencyCheck — and apply it with EF Core migrations, verified against a real database
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Create an Azure VM using C# and Azure.ResourceManager
Provision a complete Azure Linux VM from C# with the modern Azure.ResourceManager SDK — DefaultAzureCredential auth, VNet, public IP, NIC, SSH-key login, and a migration map from the deprecated Fluent