'object' does not contain a definition for 'Name'

I’m trying to convert an old project with RazorEngine to .netcore and RazorLight but with the old working template and code I get always this error: ‘object’ does not contain a definition for ‘Name’

SomeMethod("\r\n<h1>Hello @Model.Name, welcome to RazorEngine!</h1>", new { Name = "pippo" });

.....

public string SomeMethod(string templateText, object model)
{
    var engine = new RazorLightEngineBuilder().UseMemoryCachingProvider().Build();
    Task<string> messageTask = Task.Run(async () => await engine.CompileRenderAsync("TemplateKey", templateText, model));
    var message = messageTask.Result;
    return message;
}

full exception:

"System.AggregateException: One or more errors occurred. ('object' does not contain a definition for 'Name') ---> Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'object' does not contain a definition for 'Name'
   at CallSite.Target(Closure , CallSite , Object )
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at RazorLight.CompiledTemplates.GeneratedTemplate.<ExecuteAsync>d__0.MoveNext() in testtemplate:line 2
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderPageCoreAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderPageAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<RenderTemplateAsync>d__17.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<RenderTemplateAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<CompileRenderAsync>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at TestProject.Mailer.Domain.MailTemplate.<>c__DisplayClass17_0.<<WithParameters>b__1>d.MoveNext() in D:\\Projects\\TestProject.Mailer\\TestProject.Mailer\\Domain\\MailTemplate.cs:line 61
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at TestProject.Mailer.Domain.MailTemplate.WithParameters(Object model) in D:\\Projects\\TestProject.Mailer\\TestProject.Mailer\\Domain\\MailTemplate.cs:line 62
   at TestProject.Mailer.CoreConsole.Program.Main(String[] args) in D:\\Projects\\TestProject.Mailer\\TestProject.Mailer.CoreConsole\\Program.cs:line 21
---> (Inner Exception #0) Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'object' does not contain a definition for 'Name'
   at CallSite.Target(Closure , CallSite , Object )
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at RazorLight.CompiledTemplates.GeneratedTemplate.<ExecuteAsync>d__0.MoveNext() in testtemplate:line 2
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderPageCoreAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderPageAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.TemplateRenderer.<RenderAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<RenderTemplateAsync>d__17.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<RenderTemplateAsync>d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at RazorLight.RazorLightEngine.<CompileRenderAsync>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at TestProject.Mailer.Domain.MailTemplate.<>c__DisplayClass17_0.<<WithParameters>b__1>d.MoveNext() in D:\\Projects\\TestProject.Mailer\\TestProject.Mailer\\Domain\\MailTemplate.cs:line 61<---

[toddams]

You are casting anonymous object to system.object. Exception message is self explanatory. Don’t generics instead of object in your method. Closing

[rbnswartz]

@MarcoNicolodi if the class ViewModel isn’t public it breaks. If it is public then everything in the sample works just fine.