PrintDocument.PrintPage Event
Occurs when the output to print for the current page is needed.
[Visual Basic] Public Event PrintPage As PrintPageEventHandler [C#] public event PrintPageEventHandler PrintPage; [C++] public: __event PrintPageEventHandler* PrintPage;
[JScript] In JScript, you can handle the events defined by a class, but you cannot define your own.
Event Data
The event handler receives an argument of type PrintPageEventArgs containing data related to this event. The following PrintPageEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Cancel | Gets or sets a value indicating whether the print job should be canceled. |
| Graphics | Gets the Graphics used to paint the page. |
| HasMorePages | Gets or sets a value indicating whether an additional page should be printed. |
| MarginBounds | Gets the rectangular area that represents the portion of the page inside the margins. |
| PageBounds | Gets the rectangular area that represents the total area of the page. |
| PageSettings | Gets the page settings for the current page. |
Remarks
To specify the output to print, use the Graphics included in the PrintPageEventArgs. For example, to specify a line of text that should be printed, draw the text using the Graphics.DrawString method.
In addition to specifying the ouput, you can indicate if there are additional pages to print by setting the PrintPageEventArgs.HasMorePages property to true. Individual page settings can also be modified through the PageSettings and the print job can be canceled by setting the PrintPageEventArgs.Cancel property to true. The default is false, which indicates that there are no more pages to print. To print each page of a document using different page settings, handle the QueryPageSettings event.
To associate the event with your event handler, add an instance of the PrintPageEventHandler delegate to the event. The event handler is called whenever the event occurs. For more information about handling events with delegates, see Events and Delegates.
Example
[Visual Basic, C#, C++] The following example prints the file that is specified through the command line to the default printer.
[Visual Basic, C#, C++] Note The example assumes that each line fits within the page width.
[Visual Basic, C#, C++] Use the System.ComponentModel, System.Drawing, System.Drawing.Printing, System.IO, and System.Windows.Forms namespaces for this example.
[Visual Basic] Public Class PrintingExample Private printFont As Font Private streamToPrint As StreamReader Private Shared filePath As String Public Sub New() Printing() End Sub ' The PrintPage event is raised for each page to be printed. Private Sub pd_PrintPage(sender As Object, ev As PrintPageEventArgs) Dim linesPerPage As Single = 0 Dim yPos As Single = 0 Dim count As Integer = 0 Dim leftMargin As Single = ev.MarginBounds.Left Dim topMargin As Single = ev.MarginBounds.Top Dim line As String = Nothing ' Calculate the number of lines per page. linesPerPage = ev.MarginBounds.Height / printFont.GetHeight(ev.Graphics) ' Iterate over the file, printing each line. While count < linesPerPage line = streamToPrint.ReadLine() If line Is Nothing Then Exit While End If yPos = topMargin + count * printFont.GetHeight(ev.Graphics) ev.Graphics.DrawString(line, printFont, Brushes.Black, leftMargin, _ yPos, New StringFormat()) count += 1 End While ' If more lines exist, print another page. If Not (line Is Nothing) Then ev.HasMorePages = True Else ev.HasMorePages = False End If End Sub ' Print the file. Public Sub Printing() Try streamToPrint = New StreamReader(filePath) Try printFont = New Font("Arial", 10) Dim pd As New PrintDocument() AddHandler pd.PrintPage, AddressOf pd_PrintPage ' Print the document. pd.Print() Finally streamToPrint.Close() End Try Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub 'Printing ' This is the main entry point for the application. Public Shared Sub Main() Dim args() As String = System.Environment.GetCommandLineArgs() Dim sampleName As String = args(0) If args.Length <> 1 Then Console.WriteLine("Usage: " & sampleName & " <file path>") Return End If filePath = args(0) End Sub End Class [C#] public class PrintingExample { private Font printFont; private StreamReader streamToPrint; static string filePath; public PrintingExample() { Printing(); } // The PrintPage event is raised for each page to be printed. private void pd_PrintPage(object sender, PrintPageEventArgs ev) { float linesPerPage = 0; float yPos = 0; int count = 0; float leftMargin = ev.MarginBounds.Left; float topMargin = ev.MarginBounds.Top; String line=null; // Calculate the number of lines per page. linesPerPage = ev.MarginBounds.Height / printFont.GetHeight(ev.Graphics) ; // Iterate over the file, printing each line. while (count < linesPerPage && ((line=streamToPrint.ReadLine()) != null)) { yPos = topMargin + (count * printFont.GetHeight(ev.Graphics)); ev.Graphics.DrawString (line, printFont, Brushes.Black, leftMargin, yPos, new StringFormat()); count++; } // If more lines exist, print another page. if (line != null) ev.HasMorePages = true; else ev.HasMorePages = false; } // Print the file. public void Printing() { try { streamToPrint = new StreamReader (filePath); try { printFont = new Font("Arial", 10); PrintDocument pd = new PrintDocument(); pd.PrintPage += new PrintPageEventHandler(pd_PrintPage); // Print the document. pd.Print(); } finally { streamToPrint.Close() ; } } catch(Exception ex) { MessageBox.Show(ex.Message); } } // This is the main entry point for the application. public static void Main(string[] args) { string sampleName = Environment.GetCommandLineArgs()[0]; if(args.Length != 1) { Console.WriteLine("Usage: " + sampleName +" <file path>"); return; } filePath = args[0]; new PrintingExample(); } } [C++] public __gc class PrintingExample { private: Font* printFont; StreamReader* streamToPrint; static String* filePath; public: PrintingExample() { Printing(); } // The PrintPage event is raised for each page to be printed. private: void pd_PrintPage(Object* /*sender*/, PrintPageEventArgs* ev) { float linesPerPage = 0; float yPos = 0; int count = 0; float leftMargin = (float)ev->MarginBounds.Left; float topMargin = (float)ev->MarginBounds.Top; String* line=0; // Calculate the number of lines per page. linesPerPage = ev->MarginBounds.Height / printFont->GetHeight(ev->Graphics) ; // Iterate over the file, printing each line. while (count < linesPerPage && ((line=streamToPrint->ReadLine()) != 0)) { yPos = topMargin + (count * printFont->GetHeight(ev->Graphics)); ev->Graphics->DrawString (line, printFont, Brushes::Black, leftMargin, yPos, new StringFormat()); count++; } // If more lines exist, print another page. if (line != 0) ev->HasMorePages = true; else ev->HasMorePages = false; } // Print the file. public: void Printing() { try { streamToPrint = new StreamReader (filePath); try { printFont = new Font(S"Arial", 10); PrintDocument* pd = new PrintDocument(); pd->PrintPage += new PrintPageEventHandler(this, &PrintingExample::pd_PrintPage); // Print the document. pd->Print(); } __finally { streamToPrint->Close() ; } } catch(Exception* ex) { MessageBox::Show(ex->Message); } } static void Main() { String* args[] = Environment::GetCommandLineArgs(); String* sampleName = args[0]; if(args->Length != 2) { Console::WriteLine(S"Usage: {0} <file path>", sampleName); return; } filePath = args[1]; new PrintingExample(); } }; int main() { PrintingExample::Main(); }
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Requirements
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
See Also
PrintDocument Class | PrintDocument Members | System.Drawing.Printing Namespace | PrintPageEventHandler | PrintPageEventArgs | BeginPrint | EndPrint | QueryPageSettings | Graphics