StateMachineAttribute Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Allows you to determine whether a method is a state machine method.
System::Attribute
System.Runtime.CompilerServices::StateMachineAttribute
System.Runtime.CompilerServices::AsyncStateMachineAttribute
System.Runtime.CompilerServices::IteratorStateMachineAttribute
Assembly: mscorlib (in mscorlib.dll)
The StateMachineAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
 | StateMachineAttribute | Initializes a new instance of the StateMachineAttribute class. |
| Name | Description | |
|---|---|---|
 | StateMachineType | Returns the type object for the underlying state machine type that was generated by the compiler to implement the state machine method. |
| Name | Description | |
|---|---|---|
| Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
You should not apply the StateMachine attribute to methods in your code. For methods that are state machine methods, the compiler will apply the AsyncStateMachineAttribute or IteratorStateMachineAttribute in the emitted IL.
When checking whether a method is a state machine method, it is preferable to instead check for following attributes, which are derived from StateMachineAttribute:
 Note: |
|---|
StateMachineAttribute cannot be used to check whether a method is a state machine method if the method is an iterator method in C#. |