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2018年1月26日

ASP.NET Validators Unclouded

Download source files – 19.7 Kb Introduction

It makes no difference what kind of development you are working on, user input validation is always an important and often troublesome issue.

What data needs to be validated? What are the valid conditions? Do we need to report every error in one pass or allow the user to correct one error at a time? Do we validate on the client [...]

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2018年1月26日

Forcing validation for required fields in Silverlight

Download sample – 3.41 MB Introduction

The common practice in Silverlight, when using MVVM, is to validate user data via the bound property setter in the View Model. Although this works well for most circumstances, it doesn’t work when the user doesn’t make a change to data and instead clicks on a button. For example, imagine a form that prompts the user for his/her [...]

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2018年1月26日

Implementing an ASP.NET Validator – UriValidator

Download component (w/ source) – 38.1 Kb Introduction

With ASP.NET, we were introduced to validators. In the most simplistic explanation, validators are used to verify that the information in a given control matches the values you are expecting.

All ASP.NET validators are derived from the abstract BaseValidator class, which provides a single abstract method [...]

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2018年1月26日

Creating Custom Validation Attribute in MVC 3

Download source – 2.36 MB Introduction

This article will demonstrate how to create custom validation attribute in MVC 3 application. There are lots of validation attributes available in MVC 3 but sometimes we may require specific type of validation which is dependent on some other properties as well. In this article, I will explain how you can create your own custom validation [...]

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2018年1月26日

CustomValidator with XMLHttpRequest object

Download source files – 9.57 Kb Download demo project – 22.9 Kb Introduction

ASP.NET supplies a few validator controls to ensure that user input data will match application needs. Most of them check if control data is not empty or entered data matches specific data type etc. In real world ASP.NET applications, we very often need to check inserted value against database. [...]

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XP Style Navigation Bar Server Control with collection property and embedded resources
 
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Android Recycler View with Spinner Item Change Selection and Update UI
 
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Copy/Paste For Databound Objects
 
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Bootstrap Persian DateTimePicker
 
5
A Transparent menu synchronizing system