RDLC 报表打印

报表rdlc怎样直接打印？ 原帖地址：

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报表rdlc怎样直接打印？ [问题点数：100分，结帖人zhao_zps]

 using System; using System.Collections.Generic; using System.Data; using System.Drawing.Imaging; using System.Drawing.Printing; using System.IO; using System.Runtime.InteropServices; using System.Text; using Microsoft.Reporting.WinForms; namespace RDLCPrinter { /// 
 /// 通过RDLC向默认打印机输出打印报表 ///  public class BillPrint:IDisposable { /// 
 /// 当前打印页号 ///  static int m_currentPageIndex; /// 
 /// RDCL转换stream一页对应一个stream ///  static List 
  
    m_streams; 
   /// 
 
   /// 把report输出成stream 
   ///  
   /// 传入需要Export的report 
   private 
   void 
   Export(LocalReport report) { 
   string deviceInfo = 
   " 
    
      " 
     + 
   " 
    
      EMF 
    " + 
   //" 
    
      2in 
    " + 
   //" 
    
      20in 
    " + 
   " 
    
      0in 
    " + 
   " 
    
      0in 
    " + 
   " 
    
      0in 
    " + 
   " 
    
      0in 
    " + 
   ""; Warning[] warnings; m_streams = 
   new List 
   
     (); report.Render( 
    "Image", deviceInfo, CreateStream, 
    out warnings); 
    foreach (Stream stream 
    in m_streams) stream.Position = 
    0; } 
    /// 
 
    /// 创建具有指定的名称和格式的流。 
    ///  
    private Stream 
    CreateStream( 
    string name, 
    string fileNameExtension, Encoding encoding, 
    string mimeType, 
    bool willSeek) { Stream stream = 
    new FileStream(name + 
    "." + fileNameExtension, FileMode.Create); m_streams.Add(stream); 
    return stream; } 
    /// 
 
    /// 打印输出 
    ///  
    private 
    void 
    PrintPage( 
    object sender, PrintPageEventArgs ev) { Metafile pageImage = 
    new Metafile(m_streams[m_currentPageIndex]); ev.Graphics.DrawImage(pageImage, ev.PageBounds); m_currentPageIndex++; ev.HasMorePages = (m_currentPageIndex < m_streams.Count); } 
    /// 
 
    /// 打印预处理 
    ///  
    private 
    void 
    Print() { PrintDocument printDoc = 
    new PrintDocument(); 
    string printerName = printDoc.PrinterSettings.PrinterName; 
    if (m_streams == 
    null || m_streams.Count == 
    0) 
    return; printDoc.PrinterSettings.PrinterName = printerName; 
    if (!printDoc.PrinterSettings.IsValid) { 
    string msg = String.Format( 
    "Can't find printer \"{0}\".", printerName); 
    throw 
    new Exception(msg); } printDoc.PrintPage += 
    new PrintPageEventHandler(PrintPage); StandardPrintController spc = 
    new StandardPrintController(); printDoc.PrintController = spc; printDoc.Print(); } 
    public 
    void 
    Dispose() { 
    if (m_streams != 
    null) { 
    foreach (Stream stream 
    in m_streams) stream.Close(); m_streams = 
    null; } } 
    /// 
 
    /// 对外接口,启动打印 
    ///  
    /// 打印报表对应的数据源 
    /// 打印报表名称 
    public 
    static 
    void 
    Run(LocalReport report) { 
    //LocalReport report = new LocalReport(); 
    //report.ReportPath = @"..\..\" + sReport; 
    //ReportDataSource dataset = new ReportDataSource("DataSet1", dtSource); 
    //report.DataSources.Add(dataset); m_currentPageIndex = 
    0; BillPrint billPrint = 
    new BillPrint(); billPrint.Export(report); billPrint.Print(); billPrint.Dispose(); } 
    /// 
 
    /// 获取打印机状态 
    ///  
    /// 打印机名称 
    /// 输出打印机状态 
    private 
    static 
    void 
    GetPrinterStatus2( 
    string printerName, 
    ref 
    uint status) { 
    try { 
    string lcPrinterName = printerName; IntPtr liHandle = IntPtr.Zero; 
    if (!Win32.OpenPrinter(lcPrinterName, 
    out liHandle, IntPtr.Zero)) { Console.WriteLine( 
    "print is close"); 
    return; } UInt32 level = 
    2; UInt32 sizeNeeded = 
    0; IntPtr buffer = IntPtr.Zero; Win32.GetPrinter(liHandle, level, buffer, 
    0, 
    out sizeNeeded); buffer = Marshal.AllocHGlobal(( 
    int)sizeNeeded); 
    if (!Win32.GetPrinter(liHandle, level, buffer, sizeNeeded, 
    out sizeNeeded)) { Console.WriteLine(Environment.NewLine + 
    "Fail GetPrinter:" + Marshal.GetLastWin32Error()); 
    return; } Win32.PRINTER_INFO_2 info = (Win32.PRINTER_INFO_2)Marshal.PtrToStructure(buffer, 
    typeof(Win32.PRINTER_INFO_2)); status = info.Status; Marshal.FreeHGlobal(buffer); Win32.ClosePrinter(liHandle); } 
    catch (Exception ex) { 
    throw ex; } } 
    /// 
 
    /// 对外接口,调去打印机信息 
    ///  
    /// 打印机名称 
    ///  
      返回打印机当前状态 
    public 
    static 
    string 
    GetPrinterStatus( 
    string printerName) { 
    uint intValue = 
    0; PrintDocument pd = 
    new PrintDocument(); printerName = printerName == 
    "" ? pd.PrinterSettings.PrinterName : printerName; GetPrinterStatus2(printerName, 
    ref intValue); 
    string strRet = 
    string.Empty; 
    switch (intValue) { 
    case 
    0: strRet = 
    "准备就绪（Ready）"; 
    break; 
    case 
    : strRet = 
    "被打开（Lid Open）"; 
    break; 
    case 
    144: strRet = 
    "打印纸用完（Out of Paper）"; 
    break; 
    case 
    : strRet = 
    "被打开并且打印纸用完（Out of Paper && Lid Open）"; 
    break; 
    case 
    1024: strRet = 
    "打印中（Printing）"; 
    break; 
    case 
    32768: strRet = 
    "初始化（Initializing）"; 
    break; 
    case 
    160: strRet = 
    "手工送纸(Manual Feed in Progress)"; 
    break; 
    case 
    4096: strRet = 
    "脱机(Offline)"; 
    break; 
    default: strRet = 
    "未知状态（unknown state）"; 
    break; } 
    return strRet; } } 
    public 
    class Win32 { [DllImport( 
    "winspool.drv", CharSet = CharSet.Auto, SetLastError = 
    true)] 
    public 
    static 
    extern 
    bool 
    OpenPrinter( 
    string printer, 
    out IntPtr handle, IntPtr printerDefaults); [DllImport( 
    "winspool.drv")] 
    public 
    static 
    extern 
    bool 
    ClosePrinter(IntPtr handle); [DllImport( 
    "winspool.drv", CharSet = CharSet.Auto, SetLastError = 
    true)] 
    public 
    static 
    extern 
    bool 
    GetPrinter(IntPtr handle, UInt32 level, IntPtr buffer, UInt32 size, 
    out UInt32 sizeNeeded); [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] 
    public 
    struct PRINTER_INFO_2 { 
    public 
    string pServerName; 
    public 
    string pPrinterName; 
    public 
    string pShareName; 
    public 
    string pPortName; 
    public 
    string pDriverName; 
    public 
    string pComment; 
    public 
    string pLocation; 
    public IntPtr pDevMode; 
    public 
    string pSepFile; 
    public 
    string pPrintProcessor; 
    public 
    string pDatatype; 
    public 
    string pParameters; 
    public IntPtr pSecurityDescriptor; 
    public UInt32 Attributes; 
    public UInt32 Priority; 
    public UInt32 DefaultPriority; 
    public UInt32 StartTime; 
    public UInt32 UntilTime; 
    public UInt32 Status; 
    public UInt32 cJobs; 
    public UInt32 AveragePPM; } } } 
    
  

之后调用Run（localReport）就能执行了

以上是原帖，

以下是我补充的几点:

1.打印的时候其实下面留的位置是很小的：

修改代码：

 private void Export(LocalReport report) { ··· " 
    
      1in 
    " + " 
    
      0in 
    " + " 
    
      0in 
    " + " 
    
      1in 
    " + ··· }

2.在button click按下去之后打印

 private void cmdPrint_Click(object sender, EventArgs e) { ReportViewer rvDoc = new ReportViewer(); rvDoc = this.reportViewer1; rvDoc.LocalReport.DataSources.Add(rds); rvDoc.LocalReport.ReportPath = @"..\..\Report1.rdlc"; //rvDoc.RefreshReport(); /* 也可以不refresh啦 */ /*自动打印*/ RDLCPrinter.BillPrint.Run(rvDoc.LocalReport);  }

这句话挺关键的：

rvDoc = this.reportViewer1;

3.补充一下上面说的调用那个类

2)在要用这个类的时候，先using RDLCPrinter；
然后调用函数的时候就可以写成：

RDLCPrinter.BillPrint.Run(rvDoc.LocalReport); 

恩 就可以用了！