PrintDocument.Print 方法

开始文档的打印进程。

**命名空间:**System.Drawing.Printing
**程序集:**System.Drawing（在 system.drawing.dll 中）

语法

声明
Public Sub Print
用法
Dim instance As PrintDocument

instance.Print

public void Print ()

public:
void Print ()

public void Print ()

public function Print ()

异常

异常类型	条件
InvalidPrinterException	PrinterSettings.PrinterName 属性中命名的打印机不存在。

备注

指定打印输出的方法是处理 PrintPage 事件并使用 PrintPageEventArgs 中包含的 Graphics。

使用 PrinterSettings.PrinterName 属性可指定用哪一台打印机来打印文档。

Print 方法在打印文档时不使用打印对话框。若要为用户提供选择打印设置的能力，则使用 PrintDialog。

提示

若打印时引发了一个不由 Print 方法处理的异常，则中止文档打印。

示例

下面的代码示例将通过命令行指定的文件打印到默认打印机。

提示

此示例要求每一行都适合于页宽。

在此示例中，使用 System.ComponentModel、System.Drawing、System.Drawing.Printing、System.IO 和 System.Windows.Forms 命名空间。

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

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();
    }
}

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();
}

public class PrintingExample
{
    private Font printFont;
    private StreamReader streamToPrint;
    private static String filePath;

    public PrintingExample()
    {
        Printing();
    } //PrintingExample

    // 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());

        // Iterate over the file, printing each line.
        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
    
    // Print the file.
    public void Printing()
    {
        try {
            streamToPrint = new StreamReader(filePath);
            try {
                printFont = new Font("Arial", 10);
                PrintDocument pd = new PrintDocument();
                pd.add_PrintPage(new PrintPageEventHandler(pd_PrintPage));

                // Print the document.
                pd.Print();
            }
            finally {
                streamToPrint.Close();
            }
        }
        catch (System.Exception ex) {
            MessageBox.Show(ex.get_Message());
        }
    } //Printing

    // 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();
    } //main
} //PrintingExample

.NET Framework 安全性

• PrintingPermission  用于安全地从受限制的对话框进行打印。关联的枚举：PrintingPermissionLevel.SafePrinting

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

PrintDocument 类
PrintDocument 成员
System.Drawing.Printing 命名空间