EventInfo Class
Discovers the attributes of an event and provides access to event metadata.
Namespace: System.Reflection
Assembly: mscorlib (in mscorlib.dll)
The EventInfo type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Attributes | Gets the attributes for this event. |
![]() ![]() ![]() | DeclaringType | Gets the class that declares this member. (Inherited from MemberInfo.) |
![]() ![]() ![]() | EventHandlerType | Gets the Type object of the underlying event-handler delegate associated with this event. |
![]() ![]() ![]() | IsMulticast | Gets a value that indicates whether the event is multicast. |
![]() ![]() ![]() | IsSpecialName | Gets a value that indicates whether the EventInfo has a name with a special meaning. |
![]() ![]() ![]() | MemberType | Gets a MemberTypes value indicating that this member is an event. (Overrides MemberInfo.MemberType.) |
![]() ![]() ![]() | MetadataToken | Gets a value that identifies a metadata element. (Inherited from MemberInfo.) |
![]() ![]() ![]() | Module | Gets the module in which the type that declares the member represented by the current MemberInfo is defined. (Inherited from MemberInfo.) |
![]() ![]() ![]() | Name | Gets the name of the current member. (Inherited from MemberInfo.) |
![]() ![]() ![]() | ReflectedType | Gets the class object that was used to obtain this instance of MemberInfo. (Inherited from MemberInfo.) |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | AddEventHandler | Adds an event handler to an event source. |
![]() ![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() ![]() | 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.) |
![]() ![]() ![]() | GetAddMethod | Returns the method that is used to add an event-handler delegate to the event source. |
![]() ![]() ![]() | GetAddMethod(Boolean) | When overridden in a derived class, returns the method that is used to add an event-handler delegate to the event source, specifying whether to return the method if the current event is non-public. |
![]() ![]() ![]() | GetCustomAttributes(Boolean) | When overridden in a derived class, returns an array of all custom attributes applied to this member. (Inherited from MemberInfo.) |
![]() ![]() ![]() | GetCustomAttributes(Type, Boolean) | When overridden in a derived class, returns an array of custom attributes applied to this member and identified by Type. (Inherited from MemberInfo.) |
![]() ![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() ![]() | GetRaiseMethod | Returns the method that is called when the event is raised. |
![]() ![]() ![]() | GetRaiseMethod(Boolean) | When overridden in a derived class, returns the method that is called when the event is raised, specifying whether to return non-public methods. |
![]() ![]() ![]() | GetRemoveMethod | Returns the method that is used to remove an event-handler delegate from the event source. |
![]() ![]() ![]() | GetRemoveMethod(Boolean) | When overridden in a derived class, retrieves the MethodInfo object for removing a method of the event, specifying whether to return non-public methods. |
![]() ![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() ![]() | IsDefined | When overridden in a derived class, indicates whether one or more attributes of the specified type or of its derived types is applied to this member. (Inherited from MemberInfo.) |
![]() ![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() ![]() | RemoveEventHandler | Removes an event handler from an event source. |
![]() ![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
Use the EventInfo class to inspect events and to hook up event handlers, as shown in the example code for the AddEventHandler method.
Note: |
|---|
EventInfo is not intended to be used to raise events. An object raises events as dictated by its internal state. |
Calling ICustomAttributeProvider.GetCustomAttributes on EventInfo when the inherit parameter of GetCustomAttributes is true does not walk the type hierarchy. You can use System.Attribute to walk the type hierarchy for custom attributes, but only if all the attributes derive from System.Attribute.
In Silverlight, you cannot inherit from EventInfo.
The following code gets an EventInfo object for the MouseLeftButtonUp event of a TextBlock control.
Note: |
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To run this example, see Building Examples That Use a Demo Method and a TextBlock Control. |
Imports System.Reflection Class Example Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) Dim myType As Type = outputBlock.GetType() Dim myEvent As EventInfo = myType.GetEvent("MouseLeftButtonUp", _ BindingFlags.Instance Or BindingFlags.Public) If Not (myEvent Is Nothing) Then outputBlock.Text &= "Looking for the MouseLeftButtonUp event in the " & _ myType.FullName & " class." & vbCrLf outputBlock.Text &= myEvent.ToString() & vbCrLf Else outputBlock.Text &= "The MouseLeftButtonUp event is not found in the " & _ myType.FullName & " class." & vbCrLf End If End Sub End Class ' This example produces the following output: ' 'Looking for the MouseLeftButtonUp event in the System.Windows.Controls.TextBlock class. 'System.Windows.Input.MouseButtonEventHandler MouseLeftButtonUp
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.





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