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Interface IEventDispatcher

Dispatches events from within a scope.

Namespace: Umbraco.Core.Events

Assembly: Umbraco.Core.dll

Syntax

public interface IEventDispatcher

Remarks

The name of the event is auto-magically discovered by matching the sender type, args type, and eventHandler type. If the match is not unique, then the name parameter must be used to specify the name in an explicit way.

What happens when an event is dispatched depends on the scope settings. It can be anything from "trigger immediately" to "just ignore". Refer to the scope documentation for more details.

Methods

Dispatch(EventHandler, Object, EventArgs, String)

Dispatches an event.

Declaration

void Dispatch(EventHandler eventHandler, object sender, EventArgs args, string name = null)

Parameters

Type	Name	Description
System.EventHandler	eventHandler	The event handler.
System.Object	sender	The object that raised the event.
System.EventArgs	args	The event data.
System.String	name	The optional name of the event.

Remarks

See general remarks on the interface.

Dispatch<TArgs>(EventHandler<TArgs>, Object, TArgs, String)

Dispatches an event.

Declaration

void Dispatch<TArgs>(EventHandler<TArgs> eventHandler, object sender, TArgs args, string name = null)

Parameters

Type	Name	Description
System.EventHandler<TArgs>	eventHandler	The event handler.
System.Object	sender	The object that raised the event.
TArgs	args	The event data.
System.String	name	The optional name of the event.

Type Parameters

Name	Description
TArgs

Remarks

See general remarks on the interface.

Dispatch<TSender, TArgs>(TypedEventHandler<TSender, TArgs>, TSender, TArgs, String)

Dispatches an event.

Declaration

void Dispatch<TSender, TArgs>(TypedEventHandler<TSender, TArgs> eventHandler, TSender sender, TArgs args, string name = null)

Parameters

Type	Name	Description
TypedEventHandler<TSender, TArgs>	eventHandler	The event handler.
TSender	sender	The object that raised the event.
TArgs	args	The event data.
System.String	name	The optional name of the event.

Type Parameters

Name	Description
TSender
TArgs

Remarks

See general remarks on the interface.

DispatchCancelable(EventHandler, Object, CancellableEventArgs, String)

Dispatches a cancelable event.

Declaration

bool DispatchCancelable(EventHandler eventHandler, object sender, CancellableEventArgs args, string name = null)

Parameters

Type	Name	Description
System.EventHandler	eventHandler	The event handler.
System.Object	sender	The object that raised the event.
CancellableEventArgs	args	The event data.
System.String	name	The optional name of the event.

Returns

Type	Description
System.Boolean	A value indicating whether the cancelable event was cancelled.

Remarks

See general remarks on the interface.

DispatchCancelable<TArgs>(EventHandler<TArgs>, Object, TArgs, String)

Dispatches a cancelable event.

Declaration

bool DispatchCancelable<TArgs>(EventHandler<TArgs> eventHandler, object sender, TArgs args, string name = null)
    where TArgs : CancellableEventArgs

Parameters

Type	Name	Description
System.EventHandler<TArgs>	eventHandler	The event handler.
System.Object	sender	The object that raised the event.
TArgs	args	The event data.
System.String	name	The optional name of the event.

Returns

Type	Description
System.Boolean	A value indicating whether the cancelable event was cancelled.

Type Parameters

Name	Description
TArgs

Remarks

See general remarks on the interface.

DispatchCancelable<TSender, TArgs>(TypedEventHandler<TSender, TArgs>, TSender, TArgs, String)

Dispatches a cancelable event.

Declaration

bool DispatchCancelable<TSender, TArgs>(TypedEventHandler<TSender, TArgs> eventHandler, TSender sender, TArgs args, string name = null)
    where TArgs : CancellableEventArgs

Parameters

Type	Name	Description
TypedEventHandler<TSender, TArgs>	eventHandler	The event handler.
TSender	sender	The object that raised the event.
TArgs	args	The event data.
System.String	name	The optional name of the event.

Returns

Type	Description
System.Boolean	A value indicating whether the cancelable event was cancelled.

Type Parameters

Name	Description
TSender
TArgs

Remarks

See general remarks on the interface.

GetEvents(EventDefinitionFilter)

Gets the collected events.

Declaration

IEnumerable<IEventDefinition> GetEvents(EventDefinitionFilter filter)

Parameters

Type	Name	Description
EventDefinitionFilter	filter

Returns

Type	Description
System.Collections.Generic.IEnumerable<IEventDefinition>	The collected events.

ScopeExit(Boolean)

Notifies the dispatcher that the scope is exiting.

Declaration

void ScopeExit(bool completed)

Parameters

Type	Name	Description
System.Boolean	completed	A value indicating whether the scope completed.