Choosing ASP.NET Core MVC vs Razor Pages: A Practical Decision Guide

Problem: Picking the Right Web‑App Pattern

When starting a new ASP.NET Core project, you often face the choice between MVC and Razor Pages. Both can deliver the same UI, but they differ in how routing, file structure, and code reuse are handled. Choosing the wrong pattern can lead to unnecessary boilerplate, harder testing, or brittle navigation.

Decision & Constraints

Decision: Use Razor Pages for page‑centric CRUD UIs where each page has its own PageModel and the navigation is straightforward. Use MVC when you need fine‑grained routing, reusable controllers, or a mix of API and view endpoints.

Constraints:

• Team size & skill: Razor Pages reduces files per feature, easing onboarding.
• Cross‑page logic: MVC allows shared services and base controllers; Razor Pages keep logic in the page folder.
• Complex routing: MVC supports attribute routing for patterns like /api/products/{id}/details.
• Legacy libraries: If you rely on existing MVC filters or action results, MVC may be simpler.

Feature Comparison Table

Feature	MVC	Razor Pages
Routing	Explicit or attribute‑based	Convention‑based (folder + file name)
Controller reuse	Yes – base controllers, filters, action results	No – PageModel per page
Boilerplate	More files (Controller, View, Model)	Fewer – PageModel + Razor file
Testability	Isolated actions, mockable services	Less granular – PageModel tests cover page logic
API & MVC mix	Natural – separate controllers or API controllers	Possible but requires separate API controllers
Advanced routing	Full attribute routing support	Limited – convention only

Trade‑Offs Explained

• Flexibility vs Simplicity: MVC gives you explicit control over routes and reusable components, at the cost of more files and boilerplate. Razor Pages streamline page logic but hide routing details.
• Team Collaboration: In large teams, MVC’s clear separation of concerns can reduce merge conflicts. Razor Pages’ tighter coupling may lead to more frequent file conflicts.
• Future Refactoring: MVC’s reusable controllers make it easier to refactor shared logic into libraries. Razor Pages may require moving logic out of PageModels if it becomes reused across pages.
• Learning Curve: New developers often find Razor Pages easier to grasp because the page file and its model live together.

Concrete Implementation Example

Below is a minimal CRUD for a Product entity using both patterns. The code is illustrative; run it in a fresh .NET 8 project to confirm behavior.

1. Razor Pages Setup

# Create project
dotnet new webapp -n RazorDemo -o RazorDemo
cd RazorDemo

# Scaffold a CRUD page for Product
# (Assumes EF Core with a DbContext named AppDbContext)
dotnet ef dbcontext scaffold "Data Source=products.db" Microsoft.EntityFrameworkCore.Sqlite --context AppDbContext --output-dir Models

# Scaffold Razor Pages
# In RazorDemo project root, run
ASP.NET Core CLI tool: dotnet aspnet-codegenerator razorpage Product -m Product -dc AppDbContext -udl -outDir Pages/Products

Resulting structure:

• Pages/Products/Index.cshtml + Index.cshtml.cs
• Pages/Products/Create.cshtml + Create.cshtml.cs
• ... and similar for Edit/Delete.

Routing is convention‑based: /Products maps to Index, /Products/Create to Create, etc. No explicit RouteAttribute is needed.

2. MVC Setup

# Create project
dotnet new mvc -n MvcDemo -o MvcDemo
cd MvcDemo

# Scaffold controller and views for Product
# (Assumes EF Core with AppDbContext)
dotnet aspnet-codegenerator controller -name ProductsController -m Product -dc AppDbContext -outDir Controllers -udl

Resulting structure:

• Controllers/ProductsController.cs
• Views/Products/Index.cshtml, Create.cshtml, etc.

Routing is explicit by default: ProductsController routes to /Products and actions map to /Products/Create, etc. You can add [Route("api/products")] attributes for API endpoints.

3. Verification Steps

1. Run each project: dotnet run inside the project folder.
2. Navigate to https://localhost:5001/Products (Razor) or https://localhost:5001/Products (MVC).
3. Perform Create, Read, Update, Delete operations and confirm the database updates.
4. Inspect generated files: Razor Pages have a Pages folder with paired .cshtml and .cshtml.cs files; MVC has separate Controllers and Views folders.
5. Check routing: In Razor, open Pages/_ViewImports.cshtml for @page directives; in MVC, open Controllers/ProductsController.cs for [Route] attributes.

Limitations & Practical Checks

• Razor Pages do not support complex attribute routing. If you need URLs like /api/products/123/details, MVC is preferable.
• Large teams may experience merge conflicts in Razor Pages because PageModels are tightly coupled to file names. Consider MVC for shared logic.
• Testing Razor PageModels requires loading the page context; MVC action tests can use ControllerContext mocks more easily.
• Both patterns support dependency injection; ensure services are registered in Program.cs or Startup.cs.

To verify your choice, build a small prototype with the pattern that best matches your constraints. Measure file count, test coverage, and routing flexibility. Adjust if the prototype reveals hidden complexity.

Conclusion

Use Razor Pages for clean, page‑centric CRUD applications where boilerplate is a concern and routing is simple. Use MVC when you need reusable controllers, advanced routing, or a mix of API and view logic. The example above demonstrates how both patterns can deliver identical functionality; the decision should rest on team workflow, future scaling, and routing requirements.