using System;

using System.Linq.Dynamic.Core;

​

internal class Program

{

    private static void Main(string[] args)

    {

        Console.WriteLine("Write user exclusion func"); 

        var userExclusionFuncStr = Console.ReadLine(); // u => u.Name.ToUpper().Contains("TEST")

        Console.WriteLine(userExclusionFuncStr);

        var exp = DynamicExpressionParser.ParseLambda<User, bool>(ParsingConfig.Default, false, userExclusionFuncStr);

        Func<User, bool>? userExclusionFunc = exp.Compile();

​

        var user1 = new User() { Name = "foo" };

        var user2 = new User() { Name = "test" };

​

        Console.WriteLine($"Is user 1 excluded: {userExclusionFunc(user1)}");

        Console.WriteLine($"Is user 2 excluded: {userExclusionFunc(user2)}");

    }

​

    class User

    {

        public string Name { get; set; } = string.Empty;

    }

}

​