Validating contact form
using Custom Data Annotations, Remote validation etc.In Custom Data Annotations we need to create a separate class derived from the Validation Attribute base class.
W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent.In this case we must provide self-validation behavior for the model class. This interface provides the Validate interface with Validation Context input parameter. In this project, add the following code in the Models folder by adding class file.To do so, we can use the IValidatable Object interface under System. This parameter defines the context in which validations are checked. This provides error messages generated for properties from the model class. Step 1: Open Visual Studio 2013, and create a new empty ASP. The Person model class implements IValidatable Object with its Validate method.This document specifies a syntax created by subsetting an existing, widely used international text processing standard (Standard Generalized Markup Language, ISO 8886(E) as amended and corrected) for use on the World Wide Web.It is a product of the XML Core Working Group as part of the XML Activity. As a convenience to readers, it incorporates the changes dictated by the accumulated errata (available at to the Fourth Edition of XML 1.0, dated 16 August 2006.More information about Custom Data Annotations can be grabbed from here.
The Remote feature provides Asynchronous Validation on the Model property.
In the controller, add the following code for Create Action methods: Run the application and enter values for Name, Birth Date, and Income.
Click on the Create button, if values are invalid, error messages will be displayed as shown here: Conclusion: The IValidatable Object interface helps to configure the Model object with Self-Validating behavior.
To implement asynchronous validations using Remote, we need to write action method in MVC controller that returns a Json Result.
But what if that we want to provide validation check logic for the Model class? in case of Employee model, salary property in the Model should not be negative or for a Person model, the Birth Date should not be a future date and so on.
It is a stable document and may be used as reference material or cited from another document.