BeforePrintPage Event (GdViewer)

In This Topic

This event is raised right before a page is to be printed through the GdViewer control using one of the Print or PrintDialog methods.

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

Syntax

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

'Declaration
 
Public Event BeforePrintPage As GdViewer.BeforePrintPageHandler

public event GdViewer.BeforePrintPageHandler BeforePrintPage

public event BeforePrintPage: GdViewer.BeforePrintPageHandler;

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

public: __event GdViewer.BeforePrintPageHandler* BeforePrintPage

public:
event GdViewer.BeforePrintPageHandler^ BeforePrintPage

Event Data

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

Property	Description
Cancel	Gets or sets a value indicating whether the print job should be canceled. Switching this value to true will subsequently terminate the printing job.
Handled	(Inherited from System.Windows.RoutedEventArgs)
OriginalSource	(Inherited from System.Windows.RoutedEventArgs)
Page	The page number of the page to be printed.
PagesLeft	The number of pages left for printing.
RoutedEvent	(Inherited from System.Windows.RoutedEventArgs)
Source	(Inherited from System.Windows.RoutedEventArgs)

Example

How to utilize this event in your GdViewer control.

VB.NET
C#

'We assume that the GdViewer1 control has been properly integrated
'and the BeforePrintPage event has been properly added.
            
'Define the event.
Sub GdViewer1_BeforePrintPage(ByVal sender As Object, ByVal e As GdPicture14.WPF.GdViewer.BeforePrintPageEventArgs)
    MessageBox.Show("The page to be printed: " + e.Page.ToString(), "GdViewer.BeforePrintPage")
End Sub

//We assume that the GdViewer1 control has been properly integrated
//and the BeforePrintPage event has been properly added.
            
//Define the event.
void GdViewer1_BeforePrintPage(object sender, GdPicture14.WPF.GdViewer.BeforePrintPageEventArgs e)
{
    MessageBox.Show("The page to be printed: " + e.Page.ToString(), "GdViewer.BeforePrintPage");
}

Reference

GdViewer Class
GdViewer Members
GdViewer.BeforePrintPageHandler Delegate
GdViewer.BeforePrintPageEventArgs Class
Print Method
PrintDialog(PrintSizeOption) Method