equals (C# Reference)

Use the equals contextual keyword in a join clause of a query expression to compare the elements of two sequences. For more information, see join clause.

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.

The following example shows how to use the equals keyword in a join clause.

var innerJoinQuery =
    from category in categories
    join prod in products on category.ID equals prod.CategoryID
    select new { ProductName = prod.Name, Category = category.Name };

See also

• Language Integrated Query (LINQ)