C# PrintDocument.Print方法代码示例

//引入命名空间
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();
     }
 }

//引入命名空间
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Printing;

public class PrintDocumentSubClass : Form
{
    public PrintDocumentSubClass()
    {
        this.cmdPrint = new System.Windows.Forms.Button();
        this.SuspendLayout();
        // 
        this.cmdPrint.Location = new System.Drawing.Point(109, 122);
        this.cmdPrint.Size = new System.Drawing.Size(75, 23);
        this.cmdPrint.Text = "Print";
        this.cmdPrint.UseVisualStyleBackColor = true;
        this.cmdPrint.Click += new System.EventHandler(this.cmdPrint_Click);
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(278, 259);
        this.Controls.Add(this.cmdPrint);
        this.Text = "Multi Page Print";
        this.ResumeLayout(false);
    }

    private void cmdPrint_Click(object sender, EventArgs e)
    {
        PrintDocument doc = new TextDocument();
        doc.PrintPage += this.Doc_PrintPage;

        PrintDialog dlgSettings = new PrintDialog();
        dlgSettings.Document = doc;

        if (dlgSettings.ShowDialog() == DialogResult.OK)
        {
            doc.Print();
        }
    }

    private void Doc_PrintPage(object sender, PrintPageEventArgs e)
    {
        TextDocument doc = (TextDocument)sender;

        Font font = new Font("Arial", 10);
        
        float lineHeight = font.GetHeight(e.Graphics);

        float x = e.MarginBounds.Left;
        float y = e.MarginBounds.Top;

        doc.PageNumber += 1;

        while ((y + lineHeight) < e.MarginBounds.Bottom && doc.Offset <= doc.Text.GetUpperBound(0))
        {
            e.Graphics.DrawString(doc.Text[doc.Offset], font,Brushes.Black, x, y);
            doc.Offset += 1;
            y += lineHeight;
        }

        if (doc.Offset < doc.Text.GetUpperBound(0))
        {
            e.HasMorePages = true;
        } else {
            doc.Offset = 0;
        }
        
    }
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new PrintDocumentSubClass());
    }
    private System.Windows.Forms.Button cmdPrint;
}

class TextDocument : PrintDocument{
    private string[] text;

    public string[] Text;

    public int PageNumber;

    public int Offset;
    

    public TextDocument()
    {
        this.Text = new string[100];
        for (int i = 0; i < 100; i++)
        {
            this.Text[i] += "string Text ";
        }
    }
}