InstanceStore.TryCommand 方法

定义

命名空间:

System.Runtime.DurableInstancing

程序集:

System.Runtime.DurableInstancing.dll

永久性提供程序可实现此方法，这可确定是否可执行特定的永久性命令和是否可异步执行此命令。

protected public:
 virtual bool TryCommand(System::Runtime::DurableInstancing::InstancePersistenceContext ^ context, System::Runtime::DurableInstancing::InstancePersistenceCommand ^ command, TimeSpan timeout);

protected internal virtual bool TryCommand (System.Runtime.DurableInstancing.InstancePersistenceContext context, System.Runtime.DurableInstancing.InstancePersistenceCommand command, TimeSpan timeout);

abstract member TryCommand : System.Runtime.DurableInstancing.InstancePersistenceContext * System.Runtime.DurableInstancing.InstancePersistenceCommand * TimeSpan -> bool
override this.TryCommand : System.Runtime.DurableInstancing.InstancePersistenceContext * System.Runtime.DurableInstancing.InstancePersistenceCommand * TimeSpan -> bool

Protected Friend Overridable Function TryCommand (context As InstancePersistenceContext, command As InstancePersistenceCommand, timeout As TimeSpan) As Boolean

参数

context

InstancePersistenceContext

实例上下文。

command

InstancePersistenceCommand

要执行的命令。

timeout

TimeSpan

此操作的超时值。

返回

Boolean

如果永久性提供程序实现不支持作为参数传递的命令，则它应返回 false；否则，它应返回 true 或引发一个异常。

注解

如果可执行此命令，永久性提供程序会对 InstancePersistenceContext 调用相关方法，以提供此命令的结果。