Type.GetEvents Method (BindingFlags)
When overridden in a derived class, searches for events that are declared or inherited by the current Type, using the specified binding constraints.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public MustOverride Function GetEvents ( _ bindingAttr As BindingFlags _ ) As EventInfo()
Return ValueType: System.Reflection.EventInfo ()
An array of EventInfo objects representing all events which are declared or inherited by the current Type that match the specified binding constraints.
An empty array of type EventInfo, if the current Type does not have events, or if none of the events match the binding constraints.
The GetEvents method does not return events in a particular order, such as alphabetical or declaration order. Your code must not depend on the order in which events are returned, because that order varies.
The following BindingFlags filter flags can be used to define which events to include in the search:
You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.
Specify BindingFlags.Public to include public events in the search.
Specify BindingFlags.NonPublic to include non-public events (that is, private, internal, and protected events) in the search. Only protected and internal events on base classes are returned; private events on base classes are not returned.
Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.
The following BindingFlags modifier flags can be used to change how the search works:
BindingFlags.DeclaredOnly to search only the events declared on the Type, not events that were simply inherited.
See System.Reflection.BindingFlags for more information.
An event is considered public to reflection if it has at least one method or accessor that is public. Otherwise the event is considered private, and you must use BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static (in Visual Basic, combine the values using Or) to get it.
If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the events of the class constraint.
The following example obtains an array of EventInfo objects that match the specified binding flags, gets all the events for a class, and displays the event names.
To run this example, see Building examples that have static TextBlock controls for Windows Phone 8.
Imports System.Reflection Imports System.Collections.Generic Imports System.Collections.ObjectModel Public Class Example Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) ' The parameterless overload of GetEvents returns all the public ' events on the Example class, whether those events are instance ' or static events. outputBlock.Text &= "All Public Events of Example:" & vbLf For Each evi As EventInfo In GetType(Example).GetEvents() outputBlock.Text &= evi.ToString() & vbLf Next evi outputBlock.Text &= vbLf & "All Non-Public Events of Example:" & vbLf Dim allNonPublic As BindingFlags = _ BindingFlags.NonPublic Or BindingFlags.Instance Or BindingFlags.Static For Each evi As EventInfo In GetType(Example).GetEvents(allNonPublic) outputBlock.Text &= evi.ToString() & vbLf Next evi outputBlock.Text &= vbLf & "All Instance Events of Example:" & vbLf Dim allInstance As BindingFlags = _ BindingFlags.Public Or BindingFlags.NonPublic Or BindingFlags.Instance For Each evi As EventInfo In GetType(Example).GetEvents(allInstance) outputBlock.Text &= evi.ToString() & vbLf Next evi End Sub Public Shared Event MyMouseEvent As System.Windows.Input.MouseEventHandler Public Event MyEvent As MyEventHandler Friend Event MyOtherEvent As EventHandler Public Delegate Sub MyEventHandler(ByVal sender As Object, ByVal e As MyEventArgs) Public Class MyEventArgs Inherits EventArgs Private eventData As List(Of String) Private Sub New(ByVal eventData As List(Of String)) Me.eventData = eventData End Sub Public ReadOnly Property Data As ReadOnlyCollection(Of String) Get Return New ReadOnlyCollection(Of String)(eventData) End Get End Property End Class End Class ' This example produces output similar to the following: ' 'All Public Events of Example: 'System.Windows.Input.MouseEventHandler MyMouseEvent 'MyEventHandler MyEvent ' 'All Non-Public Events of Example: 'System.EventHandler MyOtherEvent ' 'All Instance Events of Example: 'MyEventHandler MyEvent 'System.EventHandler MyOtherEvent