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Apply reusable and customizable validation rules to properties, methods, and parameters in your business objects. Works with WPF, ASP.Net, Windows Forms, ASP.Net MVC and web services.

(This library is written in C# but can be consumed by any .net assembly)
Requires: .net Runtime 3.0

Quick Starts

Quick Starts are working runable application that illustrate the use of the framework.
So far Quick Starts exist for the following

Windows forms (C# and VB)
ASP.NET Web Site (C# and VB)
ASP.NET MVC Web Site (C#)
WPF (C#)

If anyone would like to add or request a Quick Start for a specific language or technology please post on the discussion board.

Frequently Asked Questions FAQ

Types of Validation

Parameters, fields or properties can be validated based on a set of rules. The result can be used to either throw an Exception or return an error message.

Configuring Rules

Rules can be added to members via:

Attributes
Runtime code
XML configuration
Fluent Interface In Progess

Included Rules

CompareRule - validates based on a comparison to a given value.
LengthRule - validates the length of a string, array or collection
RangeRule - validates that a value is inside a range
RequiredRule - validates the existence of a value
EnumerableDuplicateRule - validates that there are no duplicates in a IEnumerable
RegexRule - validates against a regular expression
CustomRule - validates using custom .net code
DateTimeConversionRule - validates that a string can be converted to a DateTime
NumberConversionRule - validates that a string can be converted to a Number
EnumConversionRule - validates that a string can be converted to a Enum

Property Validation Base classes BaseBusinessClasses

Several base classes exists to fast track development of validatable classes.
No. You do not need to use the provided base classes to make use of the validation framework.

ASP.MVC - Easily Generate Client-Side Validation from Model In Progress

Easily generate client-side validation from rules defined in your model. The framework leverages concepts for server-side validation provided in MVC preview 5 nearly eliminating the learning curve. We try and make client side generation as lightweight as possible. It shouldn't have much of an impact on the way your MVC project is designed.

Web Forms - Easily Generate Validation Controls

Supports the creation of Web BaseValidators based on the rules applied to properties.
For example; a RequiredRuleAttribute will automatically generate a RequiredFieldValidator. Client side javascript Web BaseValidators are generated for most rules. All rules support server side Web BaseValidators.