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EnableEvents Method
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Leadtools Namespace > RasterImage Class : EnableEvents Method




Enables raising the Changed event.

Syntax

Visual Basic (Declaration) 
Public Sub EnableEvents()
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
 
instance.EnableEvents()
C# 
public void EnableEvents()
Managed Extensions for C++ 
public: void EnableEvents();
C++/CLI 
public:
void EnableEvents();

Example

For an example, refer to Changed.

Remarks

Calling DisableEvents will increment an internal counter. When the internal counter is 0, the Changed events will be raised for changes to the RasterImage.

When the internal counter is != 0, Changed will not be raised. Therefore, for each call to DisableEvents, there should be a corresponding call to EnableEvents in order to restore the raising of events.

You can temporary disable the Changed event when performing multiple operations on a RasterImage object then re-enabling it once the operations are done. This way, any listeners to the Changed event will be notified only once thus optimizing the performance.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also