default (C# reference)

Use the default keyword in the following contexts:

• To specify the default case in the switch statement.
• As the default operator or literal to produce the default value of a type.
• As the default type constraint on a generic method override or explicit interface implementation.

The C# language reference documents the most recently released version of the C# language. It also contains initial documentation for features in public previews for the upcoming language release.

The documentation identifies any feature first introduced in the last three versions of the language or in current public previews.

Tip

To find when a feature was first introduced in C#, consult the article on the C# language version history.

See also

• C# keywords