Declaring a `dynamic` variable results in no new output

[BillWagner]

Describe the bug

Start with the following program at https://try.dot.net:

using System;

public class Program
{
  public static void Main()
  {
    Console.WriteLine(DateTime.Now);
    object obj = 1;
    Console.WriteLine(obj.GetType());
    Console.WriteLine(obj);
  }
}

That works fine. Now, make the following change to the line where obj is declared:

    dynamic obj = "hi";

Click the "Run" button again. The displayed output does not change. You'll still see the type as System.Int32, the value as 1, and the previous timestamp.

Did this error occur while using dotnet try or online?

• [ ] dotnet-try
• [x] online

What kind of error was it?

• [ ] User Interface (UI): For example the output never displayed
• [ ] Service Error: For example "The service is temporarily unavailable. We are working on it"
• [x] Other:

Screenshots

If applicable, add screenshots to help explain your problem.

Please complete the following:

• OS
  • [X] Windows 10
  • [ ] macOS
  • [ ] Linux (Please specify distro)
  • [ ] iOS
  • [ ] Android
• Browser
  • [ ] Chrome
  • [X] Edge
  • [ ] Safari

[LadyNaggaga]

Adding @rchande , @jonsequitur @colombod

[rchande]

@BillWagner Thanks for filing. This appears to be a specific issue with dynamic--we'll follow up with mono team.