FEVOR is an abbreviation for Fluent Extensible Validator and it’s a .NET validation library with lots of features that simplify the validation process in development by abstracting away the complex logic of conditional statements.

Features

• it can be used on any .NET project
• removes conditional statements clutter by making use of a fluent syntax;
• no need to learn any attributes or interfaces to extend it (it’s all based on extension methods);
• makes validation code readable even for non-developers, making it easy to maintain it;
• contains type-specific validation rules, but also generic rules that can be used on any type;
• gives you two options of extending it;
• has a built-in system for failure handling;
• choose from four types of warning methods, or use different ones on each validation group;
• has full support for NULL values/objects;
• has built-in error messages that can be easily overridden with your own;
• has a rich set of validation rules for the most common needs of a developer.

Included in the package

1. The library’s source code which is heavily documented using XML tags;
2. A WinForms demo application;
3. Full API documentation in HTML and PDF format, with examples;
4. A complete PDF tutorial with 3 levels full of code samples, explaining every feature of this library;
5. A diagram exposing every member of this library.

Requirements

• .NET Framework 4.0;
• Works on any type except dynamic types.

Sample code

Here’s a quick sample code to give you an idea of how FEVOR will enhance your validation process:

"abcdef".Check("s")
        .IsNotNull()
        .IsLongerThan(1, "string too short")
        .IsAlpha("the string should have only letters!")
        .IsValidHexColor("this is not a valid HEX color");

n.Check("n").IsInRange(-10,10).IsGreaterThan(0);