ASP.NET Core MVC – Important Interview Questions & Answers (2026)

ASP.NET Core MVC Interview Questions and Answers (2026)

This guide contains the most important ASP.NET Core MVC interview questions and answers for freshers and experienced developers.

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1. What is ASP.NET Core MVC?

ASP.NET Core MVC is a web framework used to build web applications using the Model-View-Controller pattern.

• Model → Handles data and business logic
• View → Displays UI
• Controller → Handles user request

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2. What is MVC Pattern?

• Model → Data
• View → UI
• Controller → Logic

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3. What is Controller?

Controller handles user requests and returns response.

public class HomeController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

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4. What is IActionResult?

IActionResult is used to return different types of responses.

return View();
return Json(data);
return RedirectToAction("Index");
return Content("Hello");

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5. What is View?

View is used to display UI.

Extension:

.cshtml

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6. What is Model?

public class Student
{
    public int Id { get; set; }
    public string Name { get; set; }
}

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7. What is Routing?

Routing maps URL to controller and action.

https://example.com/Home/Index

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8. What is Dependency Injection?

public class HomeController : Controller
{
    private readonly IStudentService service;

    public HomeController(IStudentService service)
    {
        this.service = service;
    }
}

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9. What is appsettings.json?

{
 "ConnectionStrings": {
   "DefaultConnection": "Server=.;Database=TestDb;"
 }
}

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10. What is Middleware?

Middleware handles request and response pipeline.

• Authentication
• Authorization
• Routing

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11. What is wwwroot folder?

Stores static files:

• CSS
• JavaScript
• Images

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12. What is ViewData?

Controller:

ViewData["Name"] = "Shiva";

View:

@ViewData["Name"]

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13. What is ViewBag?

Controller:

ViewBag.Name = "Shiva";

View:

@ViewBag.Name

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14. What is TempData?

TempData["Message"] = "Saved Successfully";

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15. What is Partial View?

Reusable view.

@Html.Partial("_Header")

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16. What is Layout Page?

Common design page.

_Layout.cshtml

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17. What is Model Binding?

[HttpPost]
public IActionResult Save(Student s)
{
}

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18. What is Tag Helper?

<form asp-action="Save">

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19. What is Action Method?

public IActionResult About()
{
    return View();
}

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20. What is Razor View Engine?

@DateTime.Now

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21. What is Kestrel?

Kestrel is the default web server used in ASP.NET Core applications.

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22. What is HttpGet?

[HttpGet]

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23. What is HttpPost?

[HttpPost]

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24. What is RedirectToAction?

return RedirectToAction("Index");

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25. What is JsonResult?

return Json(data);

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26. What is Dependency Injection Lifetime?

• Transient
• Scoped
• Singleton

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27. What is Session?

Session stores user data on server.

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28. What is Cookie?

Cookie stores user data in browser.

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29. What is ViewComponent?

Reusable component like partial view but more powerful.

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30. Example: Pass Data Controller to View

Controller:

public IActionResult Index()
{
    ViewBag.Name = "Shiva";
    return View();
}

View:

<h1>@ViewBag.Name</h1>

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Important Topics to Prepare

• MVC Architecture
• CRUD Operations
• Dependency Injection
• Entity Framework Core
• Routing
• Middleware
• Validation
• Razor View Engine
• Tag Helpers
• Web API Integration

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End of ASP.NET Core MVC Interview Guide