¶ Blazor (C#)
¶ Web Technologies
/jpg/image.png)
¶ Introduction to the Blazor (C#) Web-Technologies Course
The evolution of web development over the past two decades has been shaped by an ongoing effort to bridge the gap between the expressiveness of client-side interfaces and the reliability of server-driven logic. JavaScript has long been the primary language enabling this bridge, but its dominance has never implied the absence of limitations—especially for developers rooted in the .NET ecosystem, who often wish for the coherence of a unified language stack. Blazor emerges precisely at this intersection. It offers a way to craft interactive, modern, and high-performance web applications using C#, without surrendering the convenience of established .NET patterns or the stability that accompanies a strongly typed environment. This course, built around one hundred in-depth articles, begins with a careful reflection on what Blazor fundamentally represents: a reimagining of how developers engage with the browser.
Blazor introduces a model where the same language powering backend systems can be extended directly into the user interface, enabling applications that are not only expressive but also maintainable at scale. The very notion that C# can execute in the browser through WebAssembly appeared revolutionary when it first entered mainstream discussion. Now, it stands as a mature and increasingly adopted approach for building interactive interfaces. The purpose of this introductory article is to set the intellectual foundation for the journey ahead—one that explores Blazor not just as a tool but as a significant shift in modern software engineering.
To appreciate Blazor’s relevance, it helps to revisit the challenges that have historically accompanied full-stack development. Maintaining coherency across two languages—commonly C# on the server and JavaScript on the client—often results in duplicated logic, mismatched type expectations, and unavoidable drift between application layers. This division also introduces complexities in hiring, project structuring, debugging strategies, and long-term maintenance. Numerous frameworks attempted to alleviate these pains by offering abstractions or facilitating code sharing, yet few achieved the sense of alignment that developers regularly sought. Blazor takes a different approach altogether. Instead of abstracting the divide, it eliminates it by allowing the client layer to be written entirely in C# and executed using standards-based browser technologies. This factor alone situates Blazor as a compelling technology for organizations deeply invested in the .NET ecosystem.
The harmony between server and client logic is only one aspect of what makes Blazor intriguing. Another lies in its architectural flexibility. Blazor can operate in different hosting modes: one where the application logic executes on the server and communicates with the browser through a real-time connection, and another where the entire application runs directly in the browser through WebAssembly. The choice between these modes allows developers to tailor applications depending on their requirements for performance, deployment, security, and offline capabilities. This adaptability underscores an essential theme of Blazor’s philosophy: developers should not be constrained to a single model of interactive web development, but instead be empowered by a unified set of abstractions that accommodate a range of application strategies.
Beyond its architectural considerations, Blazor reshapes the development experience. The ability to re-use existing .NET libraries, share validation logic across layers, and implement patterns like dependency injection and component composition brings the richness of enterprise-grade backend engineering to the domain of user interfaces. Developers accustomed to the structure and predictability of C# find in Blazor an immediate sense of familiarity. The tooling support integrated into modern .NET development environments ensures that building a web interface feels no more alien than writing a desktop application. Features such as strong typing, compile-time checks, and LINQ queries transform tasks that often feel fragile in JavaScript-centric environments into processes governed by reliability and clarity. In this respect, Blazor represents not merely a framework but a continuation of the design principles that have characterized .NET for decades.
However, it is important not to interpret Blazor as an attempt to replace the broader JavaScript ecosystem. The web has grown into a highly diverse environment, and JavaScript will undoubtedly remain fundamental to browser execution. Instead, Blazor offers an alternative path, especially appealing to developers who seek a cohesive stack, a powerful type system, and long-term maintainability. It demonstrates that rich client-side experiences need not be bound to JavaScript alone, and that modern web applications can be crafted through multiple paradigms. This pluralism is healthy for the industry, as it expands the possibilities available to teams with different strengths, histories, and architectural preferences.
The objective of this 100-article course is to provide a comprehensive exploration of Blazor from its conceptual foundations to advanced application development. The sequence is designed to guide learners from introductory principles to deeply technical discussions about performance optimization, component reusability, interactive workflows, deployment considerations, and integration with broader .NET technologies. By dedicating each article to a distinct topic, the course creates a space where even complex subjects can be addressed with clarity and depth. The intention is not merely to teach syntax or patterns but to encourage an understanding of Blazor as a dynamic environment where ideas, decisions, and design philosophies interact in meaningful ways.
A significant part of learning Blazor involves engaging with its component model. Components form the core building blocks of applications, encapsulating logic, behavior, and rendering. At first glance, this may resemble the component-driven ecosystems familiar from other modern frameworks. Yet Blazor components possess nuances shaped by the .NET architecture: the integration of events, data binding, lifecycle methods, and dependency injection opens possibilities that feel both powerful and intuitive. Understanding how these pieces fit together will be essential for designing user interfaces that are both elegant and efficient. The course will progressively examine these concepts in detail, ensuring that learners develop an instinctive sense for creating modular and maintainable component structures.
The communication model that Blazor employs is another area rich with intellectual depth. Whether operating in server mode through a real-time circuit or running entirely within WebAssembly, Blazor maintains state and responsiveness in ways that challenge conventional assumptions about web application behavior. The abstraction of state management frees developers from a great deal of manual synchronization, yet also introduces new responsibilities related to resource management and application lifetime. Exploring these complexities is crucial for building applications that perform reliably under diverse conditions. This course will therefore dedicate extensive attention to state, events, rendering cycles, and the subtle considerations that shape user experience.
Integration with external APIs, databases, authentication systems, and cloud platforms is also central to real-world applications. Blazor’s compatibility with the .NET ecosystem ensures that such integrations feel natural. Whether interacting with REST services, SignalR hubs, or Entity Framework models, developers can leverage patterns they may already be familiar with. This continuity reinforces one of Blazor’s most significant advantages: the ability to unify the entire application—from the client interface to the backend infrastructure—under the same conceptual and linguistic umbrella. The value of this unity becomes increasingly clear as projects scale in complexity.
Performance considerations constitute another dimension of Blazor development. While WebAssembly delivers impressive execution capabilities, it is not without constraints. Similarly, server-side Blazor offers remarkable efficiency but relies on persistent connections that must be managed thoughtfully. Designing applications that operate smoothly therefore requires careful thinking about rendering strategies, resource allocation, prerendering, and load balancing. Throughout this course, these topics will be approached not as afterthoughts but as integral aspects of responsible software engineering.
The long-term sustainability of applications is a theme that consistently echoes throughout the .NET ecosystem. Blazor inherits this philosophy. The combination of strong tooling, well-established design patterns, clear separation of concerns, and robust testing methodologies creates an environment where applications can grow without losing their structural integrity. This aligns Blazor with professional standards in enterprise development, and positions it as a mature technology for organizations seeking longevity in their software investments. The articles in this course will reflect this orientation by approaching each topic with an eye toward maintainability, architectural coherence, and practical decision-making.
As we begin this journey, it is valuable to recognize the broader context in which Blazor operates. Web development continues to evolve rapidly, driven by new expectations of responsiveness, scalability, security, and user experience. Amid this flux, Blazor presents a thoughtful synthesis of modern web capabilities and established software engineering principles. It acknowledges the realities of the browser while leveraging the strengths of a language and framework trusted by millions of developers worldwide. This combination of innovation and familiarity is precisely what makes Blazor a significant turning point in the landscape of web technologies.
This course invites you to explore Blazor not merely as a technical framework but as an intellectual endeavor. Each article will expand your understanding of how interactive applications can be imagined, constructed, and refined. By the end of the series, you will possess not only technical proficiency but also a conceptual clarity that enables you to approach Blazor development with confidence and creativity. The path ahead spans numerous layers of knowledge—from foundational ideas to advanced design strategies—but it is designed to unfold naturally, allowing you to develop a comprehensive and nuanced understanding of this remarkable technology.
In embarking on this exploration of Blazor, you step into a domain where the traditional boundaries of web development are re-examined and redefined. The tools and concepts you encounter will shape the way you think about interfaces, logic, user experience, and the architecture of modern software systems. With this introduction, the groundwork has been laid. What follows is a detailed, thoughtfully structured, and intellectually rich examination of Blazor—one that will guide you through every dimension of building interactive, modern, and robust web applications using C#.
¶ Blazor (C#)
¶ Beginner Level
1. Introduction to Blazor: What Is It and Why Use It?
2. Setting Up Your First Blazor Application
3. Understanding the Blazor Framework Architecture
4. Blazor WebAssembly vs Blazor Server: What's the Difference?
5. Understanding the Components in Blazor
6. Working with Razor Syntax in Blazor
7. Introduction to Blazor Components and Their Structure
8. Passing Parameters to Blazor Components
9. Handling Events in Blazor
10. Introduction to Two-Way Data Binding in Blazor
11. Rendering HTML in Blazor with Markup and Code
12. Building Your First Blazor Component
13. Introduction to Blazor Routing and Navigation
14. Using Blazor’s Built-in Layouts
15. Basic Styling in Blazor Using CSS
16. Understanding the Blazor Lifecycle Methods
17. Using Form Components and Handling User Input in Blazor
18. Introduction to Blazor’s Dependency Injection
19. Working with the @code Block in Blazor Components
20. Communicating Between Components in Blazor
21. Using Blazor’s JavaScript Interop
22. Managing State in Blazor Components
23. Introduction to Blazor’s Component Parameters and EventCallbacks
24. Validating User Input in Blazor Forms
25. Building a To-Do List Application with Blazor
26. Introduction to Blazor’s @bind Directive for Binding
27. Handling Error States and Exception Handling in Blazor
28. Using the @foreach Loop in Blazor for Dynamic Content
29. Working with Lists and Collections in Blazor
30. Introduction to Blazor Components with Nested Components
31. Creating and Using Reusable Components in Blazor
32. Building a Simple CRUD Application with Blazor
33. Using Component Libraries in Blazor (e.g., Telerik, Syncfusion)
34. Introduction to Dependency Injection in Blazor Components
35. Blazor’s Support for Client-Side WebAssembly
36. Using the Blazor Debugging Tools
37. Integrating Blazor with APIs: RESTful Services
38. Adding Validation to Forms in Blazor
39. Introduction to CSS Isolation in Blazor Components
40. Working with the EventCallback<T> Delegate in Blazor
41. Understanding Blazor’s Asynchronous Programming Model
42. Handling Keyboard and Mouse Events in Blazor
43. Introduction to File Upload in Blazor
44. Implementing Authentication and Authorization in Blazor
45. Creating and Using Blazor Dialogs and Modals
46. Setting Up Blazor Projects with Visual Studio
47. Introduction to Blazor’s JavaScript Interop API
48. Building Navigation Menus and Links in Blazor
49. Setting Up and Managing Sessions in Blazor
50. Introduction to Blazor’s Memory Management and Performance
¶ Intermediate Level
51. Advanced Component Communication in Blazor
52. Implementing Authentication with IdentityServer and Blazor
53. Using Blazor with RESTful APIs for CRUD Operations
54. Creating Forms and Validating Data in Blazor
55. Understanding Blazor’s Routing System with Nested Routes
56. Optimizing Blazor WebAssembly Performance
57. Implementing Lazy Loading in Blazor
58. Working with SignalR in Blazor for Real-time Updates
59. Managing State Across Blazor Components
60. Integrating Blazor with External JavaScript Libraries
61. Building a Multi-Page Application (MPA) with Blazor
62. Working with Advanced Routing and Navigation in Blazor
63. Using Dependency Injection for Service-Based Logic in Blazor
64. Building a Shopping Cart Application in Blazor
65. Accessing and Displaying Data from External APIs in Blazor
66. Creating a Custom Component Library in Blazor
67. Working with Blazor’s Cascading Values and Parameters
68. Introduction to Blazor and Entity Framework Core for Data Access
69. Adding Authentication and Authorization Using JWT Tokens in Blazor
70. Handling Long-running Operations with Task and async in Blazor
71. Implementing Custom Events and Delegates in Blazor
72. Using the Blazor IJSRuntime for JavaScript Interop
73. Handling Forms and Data in Blazor Using Model Binding
74. Implementing User Role Management and Permissions in Blazor
75. Working with Navigation Guards in Blazor
76. Using Custom CSS for Styling Blazor Components
77. Using Blazor to Build Multi-step Forms and Wizards
78. Integrating Blazor with External RESTful APIs and Web Services
79. Using Blazor with Server-Side Rendering (SSR)
80. Setting Up and Configuring Blazor for Internationalization (i18n)
81. Advanced Techniques for Optimizing Blazor WebAssembly Performance
82. Handling Asynchronous Data with Blazor’s Task and async/await
83. Integrating a Notification System in Blazor Applications
84. Working with Blazor’s Custom Layouts and Templates
85. Creating Advanced Custom Components with Blazor
86. Using Blazor with WebAssembly to Build Progressive Web Apps (PWAs)
87. Handling File Downloads and Uploads in Blazor
88. Creating Data Tables and Sorting with Blazor Components
89. Working with Custom Form Validation in Blazor
90. Using Client-Side Storage (LocalStorage, SessionStorage) in Blazor
91. Using Blazor with OAuth 2.0 Authentication
92. Building a Chat Application in Blazor
93. Creating Customizable UI Themes and Styles in Blazor
94. Working with Dynamic Component Rendering in Blazor
95. Using Middleware and Interceptors in Blazor
96. Blazor for Building Single Page Applications (SPAs)
97. Integrating Blazor with Azure Functions for Serverless Computing
98. Implementing Blazor WebAssembly in Low Bandwidth Environments
99. Managing Error Handling and Logging in Blazor Applications
100. Exploring Unit Testing and Test Automation in Blazor