CallbackError Method (NotifyingWidget)

Processes an error that has occurred during a callback.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Protected Overridable Sub CallbackError( _
   ByVal name As String, _
   ByVal exception As Exception _
)

'Usage
 
Dim instance As NotifyingWidget
Dim name As String
Dim exception As Exception
 
instance.CallbackError(name, exception)

protected virtual void CallbackError( 
   string name,
   Exception exception
)

protected:
virtual void CallbackError( 
   String^ name,
   Exception^ exception
)

Parameters

name: Name of the callback or event handler.
The value of this parameter cannot be null (Nothing in Visual Basic).
exception: The exception thrown by the handler.
The value of this parameter cannot be null (Nothing in Visual Basic).

Exceptions

Exception Description

Exception	Description
System.ArgumentNullException	A `null` reference (`Nothing` in Visual Basic) is passed to a method that does not accept it as a valid argument. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

System.ArgumentNullException

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

NotifyingWidget Class
NotifyingWidget Members

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