Best Practices For ASP.NET MVC Application

Strongly Type View

Best practice, when working with View and passing data from Controller, is using data access logic to use Strongly Typed View and which with map with a ViewModel directly.
Use HTTP Verbs

Always use HTTP verbs suitable to action method such as HttpPut or HttpGet. If you don't define it, it will work as HttpGet, by default.

But when adding something in database using insert operation, we need to use HttpPut.
Use Bundling and Minification

As per ASP.NET MVC application performance, we should always use Bundling and Minification. Using Bundling and Minification, we can make fewer requests on server and decrease the file size, which will download faster. Minification is achieved to use .min file. We can do Bundling in BundleConfig class, as shown in the following.
Use Area

If we are interested in creating pluggable applications in MVC, then Area is the best option. Area provides separation of components. Using Area, we can create multiple modules in the same application where every module is working individually without affecting the other functionality.

Mostly, Area is used to create Back-end modules, like Admin part in application. With the following image, we can see that we have created three areas - Blog, InterviewAdmin, TutorialAdmin. Every Area component [blog] will contain its own Controller folder, View folder, and Models folder.



Use Request Validation

Always use Request Validation as false [ValidateInput(false)]. By default, it is true and this can cause security issues because if it is true, then using HTML control, we can pass the HTML content to server. So, best practice is to use Request Validation as false.

Enabling request validation in View pages would cause validation to occur after the input has already been processed by the Controller. By default, MVC performs request validation before a Controller processes the input. To change this behavior, apply the ValidateInputAttribute to a Controller or Action.
Use Validation through DataAnnotation

Validation is the important part when working with any application. In ASP.NET MVC, we can implement validation on server side using DataAnnotation which is found in usingSystem.ComponentModel.DataAnnotations namespace.

After using this, we don't need to do extra work. Just pass validation as per requirements, like for checking if the control is not empty use [Required] attribute, for max length validation just use [MaxLength] attribute with properties.
Use Only Single View Engine

In MVC, by default there are two engines available - ASPX engine and Razor engine. But, it prefers to use only one engine for increasing the performance of the application. So, first we need to clear ViewEngines when initializing the application, and then bind our preferable engine with the application.
Conclusion

So, today we have learned the best practices while working with ASP.NET MVC applications.

I hope this post will help you. Please put your feedback using comment which helps me improve myself for the next post. Please put your doubts and queries in the comment section.