InvokeMemberBinder.FallbackInvoke(DynamicMetaObject, DynamicMetaObject[], DynamicMetaObject) 方法

定义

在派生类中重写时,如果无法绑定目标动态对象,则执行动态调用操作的绑定。When overridden in the derived class, performs the binding of the dynamic invoke operation if the target dynamic object cannot bind.

public:
 abstract System::Dynamic::DynamicMetaObject ^ FallbackInvoke(System::Dynamic::DynamicMetaObject ^ target, cli::array <System::Dynamic::DynamicMetaObject ^> ^ args, System::Dynamic::DynamicMetaObject ^ errorSuggestion);
public abstract System.Dynamic.DynamicMetaObject FallbackInvoke (System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args, System.Dynamic.DynamicMetaObject errorSuggestion);
public abstract System.Dynamic.DynamicMetaObject FallbackInvoke (System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args, System.Dynamic.DynamicMetaObject? errorSuggestion);
abstract member FallbackInvoke : System.Dynamic.DynamicMetaObject * System.Dynamic.DynamicMetaObject[] * System.Dynamic.DynamicMetaObject -> System.Dynamic.DynamicMetaObject
Public MustOverride Function FallbackInvoke (target As DynamicMetaObject, args As DynamicMetaObject(), errorSuggestion As DynamicMetaObject) As DynamicMetaObject

参数

target
DynamicMetaObject

动态调用操作的目标。The target of the dynamic invoke operation.

args
DynamicMetaObject[]

动态调用操作的参数。The arguments of the dynamic invoke operation.

errorSuggestion
DynamicMetaObject

如果绑定失败,则为要使用的绑定结果;否则为 null。The binding result to use if binding fails, or null.

返回

DynamicMetaObject

表示绑定结果的 DynamicMetaObjectThe DynamicMetaObject representing the result of the binding.

注解

当目标以 get 成员序列的形式实现调用成员操作,并调用以使 DynamicMetaObject 请求仅绑定调用操作时,目标将调用此方法。This method is called by the target when the target implements the invoke member operation as a sequence of get member, and invoke, to let the DynamicMetaObject request the binding of the invoke operation only.

适用于