Contextual Keywords (C# Reference)
A contextual keyword is used to provide a specific meaning in the code, but it is not a reserved word in C#. The following contextual keywords are introduced in this section:
Keyword |
Description |
|---|---|
Defines a custom event accessor that is invoked when client code subscribes to the event. |
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Indicates that the modified method, lambda expression, or anonymous method is asynchronous. |
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Suspends an async method until an awaited task is completed. |
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Defines a reference type that enables operations in which it occurs to bypass compile-time type checking. |
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Defines an accessor method for a property or an indexer. |
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Specifies the default global namespace, which is otherwise unnamed. |
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Defines partial classes, structs, and interfaces throughout the same compilation unit. |
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Defines a custom event accessor that is invoked when client code unsubscribes from the event. |
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Defines an accessor method for a property or an indexer. |
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Used to set accessors and to add or remove event handlers. |
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Enables the type of a variable declared at method scope to be determined by the compiler. |
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Adds constraints to a generic declaration. (See also where). |
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Used in an iterator block to return a value to the enumerator object or to signal the end of iteration. |
All query keywords introduced in C# 3.0 are also contextual. For more information, see Query Keywords (C# Reference).