PrintDocument.Print Metodo
Importante
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Avvia il processo di stampa del documento.
public:
void Print();C#
public void Print ();member this.Print : unit -> unitPublic Sub Print ()La stampante indicata nella proprietà PrinterName non esiste.
Nell'esempio di codice seguente viene stampato il file specificato tramite la riga di comando nella stampante predefinita.
Nota
L'esempio richiede che ogni riga si adatta alla larghezza della pagina.
Usare gli System.ComponentModelspazi dei nomi , System.DrawingSystem.Drawing.Printing, System.IOe System.Windows.Forms per questo esempio.
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
using namespace System;
using namespace System::IO;
using namespace System::Drawing;
using namespace System::Drawing::Printing;
using namespace System::Windows::Forms;
public ref class PrintingExample
{
private:
Font^ printFont;
StreamReader^ streamToPrint;
static String^ filePath;
public:
PrintingExample()
{
Printing();
}
private:
// The PrintPage event is raised for each page to be printed.
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 = nullptr;
// 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()) != nullptr) )
{
yPos = topMargin + (count * printFont->GetHeight( ev->Graphics ));
ev->Graphics->DrawString( line, printFont, Brushes::Black, leftMargin, yPos, gcnew StringFormat );
count++;
}
// If more lines exist, print another page.
if ( line != nullptr )
ev->HasMorePages = true;
else
ev->HasMorePages = false;
}
public:
// Print the file.
void Printing()
{
try
{
streamToPrint = gcnew StreamReader( filePath );
try
{
printFont = gcnew Font( "Arial",10 );
PrintDocument^ pd = gcnew PrintDocument;
pd->PrintPage += gcnew PrintPageEventHandler( this, &PrintingExample::pd_PrintPage );
// Print the document.
pd->Print();
}
finally
{
streamToPrint->Close();
}
}
catch ( Exception^ ex )
{
MessageBox::Show( ex->Message );
}
}
static void Main()
{
array<String^>^args = Environment::GetCommandLineArgs();
String^ sampleName = args[ 0 ];
if ( args->Length != 2 )
{
Console::WriteLine( "Usage: {0} <file path>", sampleName );
return;
}
filePath = args[ 1 ];
gcnew PrintingExample;
}
};
int main()
{
PrintingExample::Main();
}
C#
using System;
using System.IO;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
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();
}
}
Imports System.IO
Imports System.Drawing
Imports System.Drawing.Printing
Imports System.Windows.Forms
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 (line IsNot 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
' 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
Specificare l'output da stampare gestendo l'evento e usando l'oggetto PrintPageGraphics incluso in PrintPageEventArgs.
Utilizzare la PrinterSettings.PrinterName proprietà per specificare quale stampante deve stampare il documento.
Il Print metodo stampa il documento senza usare una finestra di dialogo di stampa. Usare un oggetto PrintDialog quando si vuole offrire all'utente la possibilità di scegliere le impostazioni di stampa.
Nota
Se viene generata un'eccezione non gestita dal metodo durante la Print stampa, la stampa del documento viene interrotta.
| Prodotto | Versioni |
|---|---|
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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