EventHandlerExtensionsSafeInvokeTEventHandler, TEventArgs(TEventHandler, ActionException, Object, TEventArgs, Boolean) Method

Safely invokes event propagation with custom exception handler, continuing even if an attached user handler throws an exception.

Definition

Namespace: Gemstone.EventHandlerExtensions
Assembly: Gemstone.Common (in Gemstone.Common.dll) Version: 1.0.110 -- Release Build+3e0464f4461df4d3e1175b13966eb47ff832554d

C#View Source Request Example

public static void SafeInvoke<TEventHandler, TEventArgs>(
	this TEventHandler eventHandler,
	Action<Exception>? exceptionHandler,
	Object? sender,
	TEventArgs args,
	bool parallel = false
)
where TEventHandler : MulticastDelegate
where TEventArgs : EventArgs

VBView Source Request Example

<ExtensionAttribute>
Public Shared Sub SafeInvoke(Of TEventHandler As MulticastDelegate, TEventArgs As EventArgs) ( 
	eventHandler As TEventHandler,
	exceptionHandler As Action(Of Exception),
	sender As Object,
	args As TEventArgs,
	Optional parallel As Boolean = false
)

C++View Source Request Example

public:
[ExtensionAttribute]
generic<typename TEventHandler, typename TEventArgs>
where TEventHandler : MulticastDelegate
where TEventArgs : EventArgs
static void SafeInvoke(
	TEventHandler eventHandler, 
	Action<Exception^>^ exceptionHandler, 
	Object^ sender, 
	TEventArgs args, 
	bool parallel = false
)

JavaScriptView Source Request Example

JavaScript does not support generic types or methods.

Parameters

eventHandler TEventHandler: Source EventHandler to safely invoke.
exceptionHandler ActionException: Custom delegate to handle encountered exceptions; when set to null, exception will be suppressed, see SuppressedException.
sender Object: Event source.
args TEventArgs: Event arguments.
parallel Boolean (Optional): Call event handlers in parallel, when attached handlers are greater than one.

Type Parameters

TEventHandler: MulticastDelegate type commonly derived from EventHandler.
TEventArgs: Type derived from EventArgs.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type TEventHandler. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

Event handler invocation list access will be locked on eventHandler.