// C# Eval Expression

// Doc: https://eval-expression.net/options

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// @nuget: Z.Expressions.Eval

​

/*

## UseSmartTypeResolution

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The UseSmartTypeResolution option lets you get or set if some type should be found automatically without specifying the `System` namespace. For example, when enabled, you can automatically use `Math.Min`, but when disabled, you need to use`System.Math.Min`. By default, the UseSmartTypeResolution value is `true`.

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In this example, we will first create a new instance of `System.Diagnostics.Stopwatch()` but only specify the `Diagnostics.Stopwatch()` part in our expression. As we will see, the `Stopwatch` type was found as the library automatically added the `System` part as no type was initially found. In the second example, we will turn off this option and see now that the library raises an exception since the type was not found.

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See more: https://eval-expression.net/options

*/

​

using System;

using Z.Expressions;

​

public class Program

{

    public static void Main()

    {

        // Global Context: EvalManager.DefaultContext.UseSmartTypeResolution = false;

        var context = new EvalContext();

        context.UseCache = false;

​

        var r1 = context.Execute("new Diagnostics.Stopwatch();");

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

        try

        {

            context.UseSmartTypeResolution = false;

​

            var fail = context.Execute("new Diagnostics.Stopwatch();");

        }

        catch(Exception ex)

        {       

            Console.WriteLine("1 - Exception: " + ex.Message);

        }

    }

}