// C# Eval Expression

// Doc: https://eval-expression.net/register-unregister

​

// @nuget: Z.Expressions.Eval

​

/*

## RegisterAssembly

​

The RegisterAssembly method register all types from the assemblies provided.

​

In this example, we will register our assembly to be able to use the `Program.AddDemo` static methods. Afterward, we will use the method `IsRegisteredAssembly` to check that the assembly was indeed registered, the method `UnregisterAssembly` to unregister the assembly, and finally, check again with the method `IsRegisteredAssembly` that the assembly has been successfully unregistered.

​

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See more: https://eval-expression.net/register-unregister

*/

​

using System;

using Z.Expressions;

​

public class Program

{

    public static void Main()

    {

        // Global Context: EvalManager.DefaultContext.RegisterAssembly(typeof(Program).Assembly);

        var context = new EvalContext();

        context.RegisterAssembly(typeof(Program).Assembly);

        var r1 = context.Execute<int>("Program.AddDemo(x, y)", new { x = 1, y = 2 });

        Console.WriteLine("1 - Result: " + r1);

        // Check if the assembly is registered

        var r2 = context.IsRegisteredAssembly(typeof(Program).Assembly);

        Console.WriteLine("2 - Result: " + r2);

        // Unregister the assembly

        context.UnregisterAssembly(typeof(Program).Assembly);

        // Check if the assembly has been succesfully unregistered

        var r3 = context.IsRegisteredAssembly(typeof(Program).Assembly);

        Console.WriteLine("3 - Result: " + r3);

    }

    public static int AddDemo(int x, int y)

    {

        return x + y;

    }

}