PreviewDropFile Event

In This Topic

This event is raised when a file has been dropped in the current GdViewer control using the drag-and-drop feature. The event is explicitly raised when the AllowDropFile property is set to true.

The event makes use of tunel routing strategy. Please check the corresponded GdViewer.DropFileEventArgs for given parameters.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Event PreviewDropFile As GdViewer.PreviewDropFileEventHandler

public event GdViewer.PreviewDropFileEventHandler PreviewDropFile

public event PreviewDropFile: GdViewer.PreviewDropFileEventHandler;

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event GdViewer.PreviewDropFileEventHandler* PreviewDropFile

public:
event GdViewer.PreviewDropFileEventHandler^ PreviewDropFile

Event Data

The event handler receives an argument of type GdViewer.DropFileEventArgs containing data related to this event. The following GdViewer.DropFileEventArgs properties provide information specific to this event.

Property	Description
File	The array of file paths of the files that are dropped in the control.
Handled	(Inherited from System.Windows.RoutedEventArgs)
OriginalSource	(Inherited from System.Windows.RoutedEventArgs)
RoutedEvent	(Inherited from System.Windows.RoutedEventArgs)
Source	(Inherited from System.Windows.RoutedEventArgs)

Remarks

Please ensure that you have enabled the AllowDropFile property to benefit from using this event.

Example

Please follow the example for the DropFile event to motivate yourself on how to utilize this event in your GdViewer control.

Reference

GdViewer Class
GdViewer Members
GdViewer.PreviewDropFileEventHandler Delegate
GdViewer.DropFileEventArgs Class
AllowDropFile Property