Cannot create an instance of......because Type.ContainsGenericParameters is true

[vawwyakr]

I am trying to use the Roslyn compiler but if I use any anonymous objects (eg: "var t = new { test = ""test"" }") I get the below error. Is there a work around for this? This script compiles with Mono but I have other issues with Mono and would prefer not to have to switch compilers based on script all over the place.

Error:
Cannot create an instance of <>f__AnonymousType0#1`1[j__TPar] because Type.ContainsGenericParameters is true.

StackTrace:
at System.RuntimeType.CreateInstanceCheckThis()
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Reflection.Assembly.CreateInstance(String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at CSScriptLibraryExtensionMethods.CreateInstance(Assembly assembly, String typeName, Object[] args)
at CSScriptLibrary.AsmBrowser.createInstance(Assembly asm, String typeName, Object[] args)
at CSScriptLibrary.AsmBrowser.CreateInstance(String typeName, Object[] args)
at CSScriptLibraryExtensionMethods.CreateObject(Assembly obj, String typeName, Object[] args)
at CSScriptLibrary.RoslynEvaluator.LoadCode(String scriptText, Object[] args)

[oleg-shilo]

This is a compiler (e.g. Roslyn) specific issue that is unfortunately impossible to address by scripting infrastructure (CS-Script).

This is not that surprising considering that quite a few normal syntax concepts are illegal in Roslyn scripting implementation. IE "error CS7021: Cannot declare namespace in script code"

It also looks like it is something that is under consideration by the Roslyn team: [Proposal] Allow explicit declaration of anonymous types (in local collections) #3304

[vawwyakr]

Wow ok darn I was hoping there might be some parameter being passed into the compiler that caused this. So Roslyn can't do anonymous types, interesting. Thank you!

[oleg-shilo]

So Roslyn can't do anonymous types, interesting.

I know. Hard to believe, right!?