InstanceStore::BeginTryCommand Method (InstancePersistenceContext^, InstancePersistenceCommand^, TimeSpan, AsyncCallback^, Object^)

.NET Framework (current version)
 

A persistence provider implements this method, which determines whether a particular persistence command can be executed. If the command can be executed, executes the command asynchronously.

Namespace:   System.Runtime.DurableInstancing
Assembly:  System.Runtime.DurableInstancing (in System.Runtime.DurableInstancing.dll)

public protected:
virtual IAsyncResult^ BeginTryCommand(
	InstancePersistenceContext^ context,
	InstancePersistenceCommand^ command,
	TimeSpan timeout,
	AsyncCallback^ callback,
	Object^ state
)

Parameters

context
Type: System.Runtime.DurableInstancing::InstancePersistenceContext^

The instance context.

command
Type: System.Runtime.DurableInstancing::InstancePersistenceCommand^

The persistence command to be executed.

timeout
Type: System::TimeSpan

The timeout value for the command execution.

callback
Type: System::AsyncCallback^

The asynchronous callback delegate that receives notification of the completion of the asynchronous operation.

state
Type: System::Object^

The state information.

Return Value

Type: System::IAsyncResult^

The state of the asynchronous operation.

If the command can be executed, the persistence provider calls relevant methods on the InstancePersistenceContext to provide the results of the command.

System_CAPS_warningWarning

Even though this method is declared as virtual rather than abstract, there is no implementation. This method must be overridden in order to provide functionality.

.NET Framework
Available since 4.0
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