.NET 4.0 framework dynamic features in VB with Option Strict On?

Question

Is there any way to use the new dynamic features in the 4.0 framework like ExpandoObject in VB.NET without setting Option Strict Off? With C#, you

Answer 1

I haven't tried this, and it wouldn't be pretty, but you ought to be able to use CallByName.

Adapting your example

Partial Public Class ClassX  

   Public Sub TestDynamic()  
      Dim dyn As Object = New System.Dynamic.ExpandoObject()  
      Dim a As String = "1" ''# Option Strict is on  
      Dim obj As Object = "999"  

      ''# dyn.Str = a  
      CallByName(dyn, "Str", CallType.Set, a) 
      Console.WriteLine("dyn.Str = {0} : Type = {1}", 
        CallByName(dyn, "Str", CallType.Get, a), 
        CallByName(dyn, "Str", CallType.Get, a).GetType().ToString()
      )     

      ''# etc etc... I can't face any more of that  

As I said, it's not pretty.