This is a very early rewrite of the super slow RulesEngine and the only maintained fork. Rule wrapper for DynamicExpresso

Example - Customer Name Contains (with possible Name replacement)

Customer Model https://github.com/asulwer/Rules/blob/master/Demo/Data/Customers.json#L1-L2999

Load customer data from json file

Rules/Demo/Execute.cs

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	using Rules.Models;
	using Demo.Models;
	using DynamicExpresso;
	using System.Text.Json;
	namespace Demo
	{
	public class Execute : IDemo
	{
	public Task Run(CancellationToken cancellationToken = default)
	{
	string jsonString = File.ReadAllText("Data/Customers.json");
	List<Customer> customers = JsonSerializer.Deserialize<List<Customer>>(jsonString)!;
	//create a Workflow
	var wf = new Workflow
	{
	//IsActive = false, //skip this workflow and all its associated Rules
	Description = "Rules which act upon a Customer", //used to give a description to the workflow
	Rules = new List<Rule> //rules in workflow
	{
	new Rule
	{
	//IsActive = false, //if IsActive is false then it will be skipped
	Description = "Contains", //rule description
	InExp = "Customer.Name.Contains(\"Olivia Esquivel\")" //Expression to evaluate and if True then this rule was successul
	},
	new Rule
	{
	//IsActive = false,
	Description = "Contains then Replace",
	LocalParameters = { new Parameter("x", typeof(int), 10) },
	InExp = "Customer.Name.Contains(\"Bridger Wise\") && x==10",
	OutExp = "Customer.Name = Customer.Name.Replace(\"Bridger Wise\", \"Wise\")" //Expression to perform if Rule is successful which is determined by success of InExp
	},
	new Rule
	{
	//IsActive = false,
	Description = "Contains then child",
	InExp = "Customer.Name.Contains(\"Mira Christensen\")", //if condition is met then run child rule
	ChildRules = new List<Rule>
	{
	new Rule
	{
	Description = "Replace",
	OutExp = "Customer.Name = Customer.Name.Replace(\"Mira Christensen\", \"Mira\")" //replace string
	}
	}
	}
	}
	};
	//evaluate ONE customer at a time against all enabled rules in workflow
	foreach (Customer customer in customers!)
	{
	Console.WriteLine(customer.Name);
	//pass array of Parameter's to Workflow for evaluation
	var parameters = new Parameter[]
	{
	new Parameter(nameof(Customer), typeof(Customer), customer)
	};
	foreach (var del in wf.Execute(parameters)) //execute workflow and its rules
	Console.WriteLine($"{del}");
	}
	return Task.CompletedTask;
	}
	}
	}