Exportar (0) Imprimir
Expandir Tudo
Este artigo foi traduzido por máquina. Coloque o ponteiro do mouse sobre as frases do artigo para ver o texto original. Mais informações.
Tradução
Original

PrintDocument Classe

Define um objeto reutilizável que envia as saídas para uma impressora.

Namespace:  System.Drawing.Printing
Assembly:  System.Drawing (em System.Drawing. dll)

public class PrintDocument : Component

Typically, you create an instance of the PrintDocument class, set the properties that describe how to print, and call the Print method to start the printing process.Handle the PrintPage event where you specify the output to print, by using the Graphics included in the PrintPageEventArgs.

For more information about printing, see the System.Drawing.Printing namespace overview.

ObservaçãoObservação:

Os membros contidos esta classe são para usar quando Impressão de um Aplicativo Windows Forms.If you are printing from a Windows Presentation Foundation application, see Visão Geral de Impressão

O exemplo de código a seguir imprime o arquivo denominado Documents\MyFile.txt c:\Meus na impressora padrão.To the exemplo, executar Alterar the caminho to the arquivo you desejar to Imprimir.You can also modify the InitializeComponent procedure through the Windows Forms Designer.

ObservaçãoObservação:

O exemplo requer que cada linha se enquadra dentro de Largura da página.

Use the System.ComponentModel, System.Windows.Forms, System.Drawing, System.Drawing.Printing, and System.IO namespaces for this example.

using System;
using System.IO;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;


 public class PrintingExample : System.Windows.Forms.Form 
 {
     private System.ComponentModel.Container components;
     private System.Windows.Forms.Button printButton;
     private Font printFont;
     private StreamReader streamToPrint;

    public PrintingExample() : base() 
    {
       // The Windows Forms Designer requires the following call.
       InitializeComponent();
    }

    // The Click event is raised when the user clicks the Print button.
    private void printButton_Click(object sender, EventArgs e) 
    {
       try 
       {
           streamToPrint = new StreamReader
              ("C:\\My Documents\\MyFile.txt");
           try 
           {
              printFont = new Font("Arial", 10);
              PrintDocument pd = new PrintDocument();
              pd.PrintPage += new PrintPageEventHandler
                 (this.pd_PrintPage);
              pd.Print();
           }  
           finally 
           {
              streamToPrint.Close();
           }
       }  
       catch(Exception ex) 
       {
           MessageBox.Show(ex.Message);
       }
    }

    // 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);

       // Print each line of the file.
       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;
    }


    // The Windows Forms Designer requires the following procedure.
    private void InitializeComponent() 
    {
       this.components = new System.ComponentModel.Container();
       this.printButton = new System.Windows.Forms.Button();

       this.ClientSize = new System.Drawing.Size(504, 381);
       this.Text = "Print Example";

       printButton.ImageAlign = 
          System.Drawing.ContentAlignment.MiddleLeft;
       printButton.Location = new System.Drawing.Point(32, 110);
       printButton.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
       printButton.TabIndex = 0;
       printButton.Text = "Print the file.";
       printButton.Size = new System.Drawing.Size(136, 40);
       printButton.Click += new System.EventHandler(printButton_Click);

       this.Controls.Add(printButton);
    }

    // This is the main entry point for the application.
    public static void Main(string[] args) 
    {
       Application.Run(new PrintingExample());
    }
 }



import System.*;
import System.IO.*;
import System.Drawing.*;
import System.Drawing.Printing.*;
import System.Windows.Forms.*;


public class PrintingExample extends System.Windows.Forms.Form
{
    private System.ComponentModel.Container components;
    private System.Windows.Forms.Button printButton;
    private Font printFont;
    private StreamReader streamToPrint;

    public PrintingExample()
    {
        // The Windows Forms Designer requires the following call.
        InitializeComponent();
    } //PrintingExample

    // The Click event is raised when the user clicks the Print button.
    private void printButton_Click(Object sender, EventArgs e)
    {
        try {
            streamToPrint = new StreamReader("C:\\My Documents\\MyFile.txt");
            try {
                printFont = new Font("Arial", 10);
                PrintDocument pd = new PrintDocument();
                pd.add_PrintPage(new PrintPageEventHandler(this.pd_PrintPage));
                pd.Print();
            }
            finally {
                streamToPrint.Close();
            }
        }
        catch (System.Exception ex) {
            MessageBox.Show(ex.get_Message());
        }
    } //printButton_Click

    // 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.get_MarginBounds().get_Left();
        float topMargin = ev.get_MarginBounds().get_Top();
        String line = null;

        // Calculate the number of lines per page.
        linesPerPage = ev.get_MarginBounds().get_Height() / 
            printFont.GetHeight(ev.get_Graphics());

        // Print each line of the file.
        while ((count < linesPerPage && 
            (line = streamToPrint.ReadLine()) != null)) {
            yPos = topMargin + count * printFont.GetHeight(ev.get_Graphics());
            ev.get_Graphics().DrawString(line, printFont, Brushes.get_Black(),
                leftMargin, yPos, new StringFormat());
            count++;
        }

        // If more lines exist, print another page.
        if (line != null) {
            ev.set_HasMorePages(true);
        }
        else {
            ev.set_HasMorePages(false);
        }
    } //pd_PrintPage

    // The Windows Forms Designer requires the following procedure.
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.printButton = new System.Windows.Forms.Button();
        this.set_ClientSize(new System.Drawing.Size(504, 381));
        this.set_Text("Print Example");
        printButton.set_ImageAlign(System.Drawing.ContentAlignment.MiddleLeft);
        printButton.set_Location(new System.Drawing.Point(32, 110));
        printButton.set_FlatStyle(System.Windows.Forms.FlatStyle.Flat);
        printButton.set_TabIndex(0);
        printButton.set_Text("Print the file.");
        printButton.set_Size(new System.Drawing.Size(136, 40));
        printButton.add_Click(new System.EventHandler(printButton_Click));
        this.get_Controls().Add(printButton);
    } //InitializeComponent

    // This is the main entry point for the application.
    public static void main(String[] args)
    {
        Application.Run(new PrintingExample());
    } //main
} //PrintingExample


System.Object
  System.MarshalByRefObject
    System.ComponentModel.Component
      System.Drawing.Printing.PrintDocument

Quaisquer membros públicos estático (compartilhados na Visual Basic) desse tipo são Thread seguro. Não há garantia de que qualquer membro de instância seja isento de segmentos.

Contribuições da comunidade

ADICIONAR
Mostrar:
© 2014 Microsoft