3.6: Types

In this module we'll talk about Value Types, DateTimeOffset, and Reference Types.

Value Types Review

• DateTimeOffset is a value type, they can't be null.

• Adding the ? to ModifiedUtc allows a value type to be null.

• It's good to store dates with DateTimeOffset, this way it will account for time zones.

• We will format the date & time in Part 11.

Important:

• Let's say it again: Notice the ? after the DateTimeOffset for the ModifiedUtc. This allows the value type to be null. The ? is referred to as the null-conditional operator. Just making sure you caught that!

Reference Types

Just for the sake of review let's note something important:

• Objects are reference types, they can be null.

• Reference Types point to an address in memory.

Just a little review.