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Resources
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Custom Validator In Angular
Apr 26, 2019.
In this article, you will learn about custom validators in Angular.
How To Add Custom Validator For Any Model In C#
Jul 20, 2018.
In this article, we will discuss how to add a custom validator for any model in C#.
Implement Shared Custom Validator Directive In Angular
Apr 24, 2018.
In this post, we are going to see how to create a custom validator directive in Angular 5. We have already seen how to do validation in our previous posts, and we have not done any validations for comparing the password and confirming the password, remember? Here we are going to see that. At the end of this article, you will get to know how to create a new shared directive according to our requirements.
Powerful Form Field Validator For Jquery And Bootstrap Using Bootstrap Validator
Apr 22, 2016.
In this article you will learn about Powerful Form Field Validator for Jquery and Bootstrap using Bootstrap validator.
Displaying Dynamic Error Message in ASP.NET Custom Validator Control
Aug 14, 2015.
This article describes how to display a dynamic error message in an ASP.NET custom validator control.
Compare Validator Sample in MVC: Day 28
Oct 25, 2014.
In this article we will see how to apply a compare validator in MVC.
Server Side Required Field Validator Sample in MVC: Day 27
Oct 20, 2014.
In this article we will see how to apply a required field validator from the server side in MVC.
Client Side Required Field Validator Sample in MVC: Day 26
Oct 15, 2014.
In this article we will see how to apply a required field validator from the client side in MVC.
Javax Annotation and Hibernate Validator - A Pragmatic Approach
May 27, 2013.
In this article, I will show you the significance of the Hibernate validator and javax annotation in a Java Bean.
XML Schema Validator in VB.NET
Nov 10, 2012.
The XML Schema Validator checks if a given XML document is well formed and has a valid schema model. If it finds the document is not a valid XML schema, it generates the error telling the problem in the schema.
IMEI Validator Using Java Swing
Jul 04, 2012.
This article covers how to create a simple IMEI validator application using Java Swing.
Create a Custom Range Validator Control in Windows Phone 7
Feb 11, 2012.
In this article we are going to explore how to make a range validator in Windows Phone 7 and the lower case validator is described as well.
Create a Custom Email Validator Control in Windows Phone 7
Feb 07, 2012.
In this article we are going to explain how to create a custom email validator in Windows Phone 7.
Password Validator in C#
Sep 09, 2011.
Here I’m telling you about password Validator in C#.
Regular Expression Validator HtmlHelper for ASP .Net MVC
Feb 09, 2011.
Sometimes, it is useful to use regular expressions for validations. The Regular Expression Validator HtmlHelper is designed to help developers accomplish this.
Required Field Validator in AJAX
Nov 12, 2010.
In this article I'll show you how to call a RequiredFieldValidator with the help of AJAX.
Password Policy/Strength ASP .NET Validator Web Control
Oct 26, 2010.
This articles tells us about ASP .NET Password Policy/Strength Validator web control.
Enhanced Required Field Validator with an Image property
Aug 14, 2007.
This article shows an enhanced Required Field Validator control with an ImageUrl property. When the control being validated is left blank, the proposed validator flags it with an Image.
Prompt Engineering: Validators and Safety - Fail Closed, Repair Small — Part 6
Oct 16, 2025.
Ensure AI safety and policy adherence with prompt engineering validators! This article details a validator architecture for generative AI, focusing on schema, lexicon, evidence, and action safety. Learn how to encode policy as data, implement 'repair small' strategies for efficient error correction, and measure validator efficacy to maintain high-quality, safe AI outputs. Improve constraint pass-rate and reduce latency!
How Do You Test Your FluentValidation Validators?
Jan 16, 2024.
When you create validators using FluentValidation in your .NET applications, it's important to check if they do their job correctly. Testing your validators helps you make sure they catch mistakes. In this guide, we'll explore how to test your FluentValidation validators simply.
How to validate HTML Code with W3C Validator?
Apr 25, 2023.
Use of W3C validator tool to validate HTML Code.
JavaScript In Practice - Let's Write Own Form Validator
Aug 08, 2022.
In this article, you will learn Javascript in practice.
Kendo UI jQuery Validator
Mar 30, 2020.
Client-side form validation is a must-have skill regardless of years of experience as a developer. In addition, developers tend to like this subject and most newbies are excited when practicing with this. Thus, in this article, we are going to tackle mostly on the usage of Kendo UI jQuery validator.
ts.validator.fluent - TypeScript Based Generic, Fluent Validation Framework
Apr 10, 2018.
I have created a TypeScript based generic, fluent validation framework. Also, I have built a demo Angular 6 CLI app which uses the framework for client-side form validation.
ASP.NET MVC 5 - JQuery Form Validator
Mar 27, 2017.
This article is about jQuery form validator integration with ASP.NET MVC5 platform.
Validator Control In ASP.NET
Jan 05, 2016.
In this article you will learn Validation through various Validator controls.
jQuery Copy Paste Number Only Validator
Jan 11, 2015.
This copy/paste numbers only validator works on Chrome/Firefox/IE > 6.0.
Xml and Schema Validator
Aug 22, 2014.
This article shows how to create a simple and generic module for validating XML files with their respective schema files.
Password Policy/Strength JQuery plug-in Validator
Dec 20, 2010.
Many a time, entities want to implement a password policy and/or determine password strength for their security purposes.
Password Policy/Strength ASP.NET MVC Validator
Nov 25, 2010.
The ASP .NET MVC Password Policy Validator facilitates implementing password policies and determining password strength for web system users. It utilizes ASP .NET MVC architecture, extension methods, and HTML Helper. Properties like UnicodeCharSetRanges, MinPasswordLength, and others set requirements.
Use image for error display in ASP.Net validators
May 26, 2008.
This articles demonstrates the use of images to display errors in ASP.Net for all kinds of validators.
Regular Expression Validator
Mar 14, 2003.
This tool is useful when you are creating Regular Expression. This tool will help you in checking syntax of the regular expression typed in.
XML Schema Validator
Apr 16, 2002.
The XML Schema Validator checks if a given XML document is well formed and has a valid schema model.
How to Handle Form Validation in Angular with Reactive Forms
Oct 07, 2025.
This article covers built-in validators, custom synchronous and asynchronous validation, and cross-field validation for complex scenarios like password matching. Learn best practices for UX, accessibility (A11y), performance optimization, and integrating backend validation. Improve user experience and build robust, testable forms with Angular.
The Next 5 Years of Prompt Engineering: Benefits, Career Paths, and How to Stay Layoff-Proof
Aug 21, 2025.
A practical guide to AI prompt engineering, covering workflows, evaluation, governance, risks, and cost optimization. Learn how to design reliable, efficient AI systems aligned with business goals.
What is staking in crypto?
Aug 08, 2025.
A beginner-friendly yet in-depth guide to crypto staking — how it works, why it matters, and how you can start earning rewards by participating in blockchain networks. Learn the benefits, risks, and top platforms for staking in 2025.
Angular Reactive Forms – Dynamic Validation with Real-Time Issue and Fix
Jul 23, 2025.
This article explains how to handle dynamic form validation in Angular Reactive Forms. It shares a real-world scenario where validation rules need to change based on user input like requiring a PAN number for individuals and a company name for organizations. The article highlights a common mistake developers make: forgetting to call updateValueAndValidity() after setting or clearing validators, which causes the form to behave unexpectedly. It walks through the issue, shows the incorrect and corrected code, and provides a reusable custom validator for PAN format. Overall, this article helps developers understand how to implement clean, dynamic validation logic in Angular forms with a practical example and real-time bug resolution.
Validation of Complex Objects in Multi-Lingual Environment Using DynamicVNET With ASP.NET Core
Oct 14, 2024.
DynamicVNET is a lightweight, rule-based validation library for .NET applications, designed to validate POCOs while adhering to the Single Responsibility Principle (SRP). It integrates seamlessly with ASP.NET Core, enabling flexible and dynamic validation for API requests with minimal configuration.
Custom Annotations and Validation in Spring Boot
Jul 04, 2024.
Explore how to enhance Spring Boot applications by creating and using custom annotations for validation. Learn to implement robust validation logic using Hibernate Validator and integrate custom validators for precise data validation in forms and REST APIs.
Byzantine Fault Tolerance and Its Role in Solana
Jul 03, 2024.
Byzantine Fault Tolerance (BFT) is crucial in distributed systems, ensuring reliable function despite faulty or malicious components. Solana, a high-performance blockchain, uses Proof of History (PoH) and Tower BFT to achieve high transaction throughput, low latency, and robust security.
Understanding Clusters in Solana
May 17, 2024.
Solana, a leading blockchain platform, relies on its clusters for decentralized, efficient transactions. These clusters, encompassing validators, RPC nodes, and clients, ensure scalability and reliability, propelling Solana's dominance in blockchain technology.
Angular URL/Site Validation using Regular Expression and Bootstrap with Reactive Forms
Feb 26, 2024.
Steps to add validation for URL using the regex pattern in the angular application. I will explain steps to create a form with text input using the reactive forms in angular. This input field will only accept the URL.
Mobile Number Validation Using Angular and Bootstrap
Feb 19, 2024.
This article illustrates the implementation steps for 10-digit mobile number validation in an Angular app using reactive forms and Angular's phone number validation pattern. It guides us through setting up the reactive forms module
Learn About Validation Controls In ASP.NET
Sep 14, 2020.
In this article, we will discuss the various types of validation control in ASP.NET.
Event Based Programming Model With JSF Tag Library
Aug 13, 2020.
JSF provides an event-based programming model similar to Swing or AWT. Events are used as a mechanism for propagating the state change notification between the source object and one or more target object listeners.
Custom Validation In Angular Template-Driven Forms
Dec 20, 2019.
In this article, we will learn about validations in the template-driven form in Angular. We will create a simple user registration form and implement some inbuilt validations on it. Along with the inbuilt validations, we will also implement some custom validations to the template-driven form.
Validation In ASP.NET Web Form
Jan 07, 2016.
In this article we will learn the use of Validation control in ASP.NET WebForm and perform validation using ComponentModel.DataAnnotations.
Adding Custom Validation in MVC
Jun 30, 2014.
In MVC, custom validation involves creating validation attributes to enforce specific rules beyond built-in ones, enhancing data integrity and user experience through tailored validation logic.
Demonstrating Backbone.js: Validations Part 3
Dec 28, 2013.
In this article we will understand how to use builtiin validators in Backbone.js.
Enterprise Library 5 - Validation Application Block
Jun 13, 2013.
In this article, you will learn how to use the Enterprise Library Validation Application Block 5.0 in ASP.Net.
Validation Control in ASP.NET
Jan 22, 2013.
Validation controls, if used properly, can be very useful for reducing large, complex, time-consuming JavaScript code.
Validation Using Data Annotation to Custom Model or Class
Jun 27, 2012.
In this tutorial, we learn how to use the Data Annotation validators to perform validation in a .NET application.
Using AJAX Textbox Extenders
Mar 13, 2009.
This article shows us how to use Textbox Extenders available in AJAX Toolkit.
Introduction to Enterprise Library: Part IX
Feb 23, 2009.
This article explains about Implementation of Custom Validator using Validation Application Block.
Role Bases Access using C# and XML
Mar 29, 2007.
Here I am trying to give a simple and configurable solution to implement Role Bases Access to your application using C# and XML. Remember that this article intent is to provide Role Based Access and not Role Based Autorization.
XML Driven Validation
Mar 20, 2007.
This article/tutorial tells us to develop a generic XML based Validation engine to be used in any Web application.
Numeric TextBox for ASP.NET
Dec 06, 2005.
An article on how to allow users to enter only numbers in a TextBox.
Validating Input Xml Data Files
Jun 28, 2004.
In this article we'll discus two strategies for validating input XML data files. The validation of an XML input file could occur at various instances of processing.