The dynamic keyword in C# 4.0 simplifies the interaction with PowerShell variables. C#’s var keyword casts the GetVariable as an object and needs additional code to cajole the object array into a shape that could be worked with.

The embedded PowerShell below creates 4 variables.

• $a – An array of ints piped through a where and foreach
• $b – A hash table
• $c – A simple array
• $d – A string

Printing the string variable results in printing each character.

Next up, using PowerShell’s Add-Member to add a NoteProperty, ScriptProperty and ScriptMethod to a PowerShell object and doing late-bound access in C#. I’ve experimented a bit but no success.

Results

Some References

Using the dynamic keyword is being experimented with other dynamic languages and other ways.

• Debugging Dynamic objects Part 1
• C# 4.0, Dynamic Programming and JSON