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I'm trying to configure Postal in class library project. To do this I need to configure custom EmailService. On Postal webpage there's a snippet for doing this:

// Get the path to the directory containing views
var viewsPath = Path.GetFullPath(@"..\..\Views");

var engines = new ViewEngineCollection();
engines.Add(new FileSystemRazorViewEngine(viewsPath));

var service = new EmailService(engines);

(See here: http://aboutcode.net/postal/outside-aspnet.html)

Surprisingly, following error is thrown:

System.ArrayTypeMismatchException occurred HResult=-2146233085
Message=Attempted to access an element as a type incompatible with the array. Source=mscorlib StackTrace: at System.Collections.Generic.List`1.Insert(Int32 index, T item) InnerException:

To be precise - it's thrown during adding FileSystemRazorViewEngine to ViewEngineCollection. FileSystemRazorViewEngine derives from IViewEngine and ViewEngineCollection derives from Collection<IViewEngine>.

And here's stacktrace:

mscorlib.dll!System.Collections.Generic.List.Insert(int index, System.__Canon item) + 0x3e bytes

System.Web.Mvc.dll!System.Web.Mvc.ViewEngineCollection.InsertItem(int index, System.Web.Mvc.IViewEngine item) + 0x89 bytes

I can't figure out what causes the exception.

Arkadiusz Kałkus
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1 Answers1

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I am getting same error. I suspect that Postal is built with slightly different version of System.Web.Mvc that the main project that causing ViewEngine incompatibility... But I only have production binaries of the postal...

Max Chernyshov
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