Syntax
| Visual Basic (Declaration) | |
|---|---|
Protected Overridable Sub OnError( _ ByVal e As ComponentErrorEventArgs _ ) | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As ComponentBase Dim e As ComponentErrorEventArgs instance.OnError(e) | |
| C# | |
|---|---|
protected virtual void OnError( ComponentErrorEventArgs e ) | |
| Managed Extensions for C++ | |
|---|---|
protected: virtual void OnError( ComponentErrorEventArgs* e ) | |
| C++/CLI | |
|---|---|
protected: virtual void OnError( ComponentErrorEventArgs^ e ) | |
Parameters
- e
- A ComponentErrorEventArgs object that contains the exception.
Remarks
Raising an event invokes the event handler through a delegate. The Synchronizing property must be set.
The OnError method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Note to Inheritors: When overriding OnError in a derived class, be sure to call the base class OnError method, so that registered delegates receive the event.
See the SynchronizingObject property for important information on updating UI controls from within derived classes and events.
Requirements
Target Platforms: Microsoft .NET Framework 2.0