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Explain client side validation in Asp.Net Core MVC

Client side validation

ASP.NET Core MVC provides client-side validation to improve user experience by preventing unnecessary server round-trips for data validation. It uses unobtrusive JavaScript to perform client-side validation. Here's an example to illustrate how you can implement client-side validation in an ASP.NET Core MVC application.

Assuming you have a simple model class named User as follows:
You can then create a controller that handles the user input and validation:
Next, create a view for the Register action:
Ensure that you've included the necessary scripts in your layout file, typically _Layout.cshtml:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.19.3/jquery.validate.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validation-unobtrusive/3.2.12/jquery.validate.unobtrusive.min.js"></script>
 
This set up will enable client-side validation for your ASP.NET Core MVC application. When the user submits the form, client-side validation will check the input fields according to the defined validation attributes in the model class. If any validation fails, appropriate error messages will be displayed to the user without making a round-trip to the server.
 
 
 
 
 

Thank You

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Brijesh Kumar

Database Developer

I have more then 6 years Experience in Microsoft Technologies - SQL Server Database, ETL Azure Cloud - Azure SQL Database, CosmosDB, Azure Data Factory, PowerBI, Web Job, Azure Function, Azure Storage, Web Apps, Powershall and Database Migration On-Premise to Azure Cloud.
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