DotNetRuleEngine 4.0.1

Targets netstandard 2.0. Compatible with both dotnet full and core frameworks.

DotNetRuleEngine allows you to write your code as series of rules to keep your code clean and structured. Supports both synchronous and asynchronous execution and it is S.O.L.I.D compliant.

Get Started at: DotNetRuleEngine Wiki

A few reasons use DotNetRuleEngine

• S.O.L.I.D
• Separation of Concern.
• Easy to maintain.
• Testable code.
• Encapsulates varying behavior. Such as business rules.

Example

Create Rule(s)

Create a rule to update FreeShipping attribute if the amount is greater than $50.00

public class QualifiesForFreeShipping: Rule<Order>
{   
    public override IRuleResult Invoke()
    {
        // Order instance available through the model property.
        if (Model.Total > 50.0m)
        {
            Model.FreeShipping = true;
        }
        
        return null;
    }
}

Invoke Rule(s)

Order order = new Order { Id = 1, Total = 79.99 };

// Pass order instance to RuleEngine.
var ruleResults = RuleEngine<Order>.GetInstance(order)
    .ApplyRules(new QualifiesForFreeShipping())
    .Execute()

Model used as an example

public class Order
{
    public int Id { get; set; }
    public decimal Total { get; set; }
    public bool FreeShipping { get; set; }
}