Aspect that, when applied on a method, intercepts invocations of this method.
Inheritance
Implements
Namespace: PostSharp.Aspects
Assembly: PostSharp.dll
Syntax
[MulticastAttributeUsage(MulticastTargets.Method|MulticastTargets.InstanceConstructor, AllowMultiple = true, AllowExternalAssemblies = true, PersistMetaData = false, TargetMemberAttributes = MulticastAttributes.NonAbstract)]
[HasInheritedAttribute]
[AttributeUsage(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Method|AttributeTargets.Property|AttributeTargets.Event|AttributeTargets.Interface, AllowMultiple = true)]
[AspectConfigurationAttributeType(typeof(MethodInterceptionAspectConfigurationAttribute))]
[Serializer(null)]
public abstract class MethodInterceptionAspect : MethodLevelAspect, IMethodLevelAspectBuildSemantics, IAspectBuildSemantics, IValidableAnnotation, IAsyncMethodInterceptionAspect, IMethodInterceptionAspect, IMethodLevelAspect, IAspectRemarks
Applying a MethodInterceptionAspect to a method results in the body of this method to be replaced by a call to the aspect OnInvoke(MethodInterceptionArgs) method of the current class. The original method body is moved into a new method, which can be called by the aspect by invoking the Proceed() method, or by using the object Binding.
note
PostSharp creates a local copy of all by-reference parameters (in, out, ref) and this local copy is passed to the intercepted method, not the original argument.
This may have unwanted effects on multi-threaded code (because the argument value is not changed at the same moment as before) or when applying the aspect on a P-Invoke method
(because a by-reference parameter could represent the starting address of a larger buffer).
note
All classes implementing IAspect should typically be marked as serializable using the SerializableAttribute or PSerializableAttribute custom attribute . Fields that are only used at runtime (and unknown at compile-time) should be carefully marked with the NonSerializedAttribute or PNonSerializedAttribute custom attribute. When PostSharp is used on a platform that does not support aspect serialization (such as .NET Compact Framework, Silverlight, or Windows Phone), or when another aspect serializer is used, it is not necessary to mark the aspect class as serializable. For more information, see Understanding Aspect Serialization .
Constructors
| Name | Description |
|---|---|
| MethodInterceptionAspect() |
Properties
| Name | Description |
|---|---|
| SemanticallyAdvisedMethodKinds | Determines which target methods will be advised semantically. This affects the behavior of the aspect when it's applied to iterator or async methods, which are compiled into state machines. |
| UnsupportedTargetAction | Specifies the action to take when the aspect is applied to an async method with unsupported return value type. |
Methods
| Name | Description |
|---|---|
| CreateAspectConfiguration() | Method invoked at build time to create a concrete AspectConfiguration instance specifically for the current Aspect type. |
| OnInvoke(MethodInterceptionArgs) | Method invoked instead of the method to which the aspect has been applied. |
| OnInvokeAsync(MethodInterceptionArgs) | Method invoked instead of the method to which the aspect has been applied. |
| SetAspectConfiguration(AspectConfiguration, MethodBase) | Method invoked at build time to set up an AspectConfiguration object according to the current Aspect instance and a specified target element of the current aspect. |