How to apply Server side validation in ASP.NET MVC?

Server side validations are very important before playing with sensitive information of a user. Server-side validation must be done whether we validate the received data on the client side. User could disable script in his browser or do something else to bypass client-side validation. In this case server-side validation must require to protect our data from dirty input.

In ASP.NET MVC, there are two ways to validate a model on server side:

  1. Explicit Model Validation – This is the traditional way to validate the model data by using IF..Else..IF statement. In this way, you need to check your model property values one by one for your desired result. If model property values are unexpected, inject error messages within ModelState.
  2. Model Validation with Data Annotations – Data Annotations was introduced with .NET 3.5 SP1. It has a set of attributes and classes defined in the System.ComponentModel.DataAnnotations assembly. Data Annotations allow us to decorate model classes with metadata. This metadata describes a set of rules that are used to validate a property.
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One Response to How to apply Server side validation in ASP.NET MVC?

  1. Ganesh Mandlik says:

    Great Explanation!!!!!!
    Thank you sir!!!!!!!!!!!!!!!!!!!!!!

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