Slow EvaluateCast

[raikilon]

After upgrading to the last version from 1.4.16.0 we are encountering performance issues on the EvaluateCast function.

The slowdown is caused by the use of the EvaluateType method instead of the GetTypeByFriendlyName.

Is this normal?

[froggy96]

I had similar issues and finally found out for my case. I hope this could be at least a hint for your case.

In my case, Assemblies loads many DLLs from my AppDomain (as my solution contains many DLLs)

So, I tried to remove all unnecessary DLLs being loaded.

var engine = new ExpressionEvaluator();

        // load assemblies needed for script
        engine .Assemblies.Clear();
        engine .Assemblies.Add(Assembly.Load("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"));
        engine .Assemblies.Add(Assembly.Load("MyDLL1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"));
        engine .Assemblies.Add(Assembly.Load("MyDLL2, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"));

        // add namespaces 
        engine .Namespaces.Add("MyLib.MyClass");
        engine .Namespaces.Add("MyLib2.MyClass2");

        // add types
        engine .Types.Add(typeof(MyLib.MyClass));
        engine .Types.Add(typeof(MyLib2.MyClass2));

        // then call evaluator

var result = eingine.ScriptEvaluate(engine.RemoveComments(expression));

after doing this, > 500ms total time reduced to 31ms

Hope this helps!