c# dynamic variable with ?? and ? operator

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65834123/c-sharp-dynamic-variable-with-and-operator

Answer 1

It essentially means

if name is not null
  set name to name
else
  if data is null
    set name to null
  else
    set name to data.name

The second operator (?.) avoids a NullReferenceException by returning null instead of trying to use the access modifier. The first (??) returns the first operand if the value is not null, otherwise it returns the second.

Note that neither of these are specific to dynamic or Azure.

It could also have been written as

if ((name == null) && (data != null))
{
   name = data.name;
}