1 代码
2 #region public static
3 /// <summary>
4 /// 获取指定ReportViewer总物理页数
5 /// guog2009-05-06新增
6 /// </summary>
7 /// <param name="reportViewer"> ReportViewer控件 </param>
8 /// <returns> 总物理页数，默认值为0 </returns>
9 public static int GetTotalPage(ReportViewer reportViewer)
10 {
11 int result = 0;
12 // 设置为打印预览模式
13 reportViewer.SetDisplayMode(DisplayMode.PrintLayout);
14
15 // 记录当前页
16 int currentPage = reportViewer.CurrentPage;
17 if (reportViewer.LocalReport.GetTotalPages() > 0)
18 { // 自带的GetTotalPages()方法返回的是逻辑页面总数，所以这里重新处理
19
20 while ( true)
21 {
22 try
23 {
24 reportViewer.CurrentPage += 1;
25 }
26 catch
27 {
28 reportViewer.CurrentPage -= 1;
29 result = reportViewer.CurrentPage;
30 break;
31 }
32 finally
33 {
34 // 指定到原始位置
35 reportViewer.CurrentPage = currentPage;
36 }
37 }
38 }
39
40 return result;
41 }
42
43
44 #endregion public static

View Code

代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using yxsoft.emcms.cs.ReportPrintBaseLib;
using yxsoft.emcms.common;
using System.Reflection;
using Microsoft.Reporting.WinForms;
using Guog.Emcms.Win.Business.GeneralDataQuery.VerifyPrintView;
using System.Drawing.Printing;
using System.IO;
using System.Drawing.Imaging;
using System.Xml;

namespace Guog.Emcms.Win.YXEmcms.Forms
{
public partial class FrmMeterVerifyPrintView : Form
{

#region 成员变量
/// <summary>
/// 打印的对象
/// </summary>
private PrintDocument m_printDocument = new PrintDocument();
/// <summary>
/// 页面设置
/// </summary>
private PageSettings m_pageSettings = new PageSettings();
/// <summary>
/// 打印文件流列表
/// </summary>
private IList<Stream> m_streams = new List<Stream>();
/// <summary>
/// 当前呈现的页
/// </summary>
private int m_currentPageIndex = 0;
/// <summary>
/// 是否横向打印,true表示横向,false表示纵向
/// </summary>
private bool m_isLandSapce = false;
/// <summary>
/// 打印输出的对象
/// </summary>
private ReportPrintBase m_reportPrintBase = null;
/// <summary>
/// 要打印输出的记录总数
/// </summary>
private int m_chkedCount = 0;
/// <summary>
/// 空白页
/// </summary>
private bool m_isBlank = true;
/// <summary>
/// 双面打印
/// </summary>
private bool m_duplex = false;
#endregion 成员变量

#region 窗体事件
public FrmMeterVerifyPrintView(ReportPrintBase reportPrintBase, int chkedCount)
{
InitializeComponent();
this.m_chkedCount = chkedCount;
this.m_reportPrintBase = reportPrintBase;
this.m_isLandSapce= this.IsLandSapces( this.m_reportPrintBase.MainReport.ReportFileStream);
this.DoubleBuffered = true;
}

private void FrmMeterVerifyPrintView_Load( object sender, EventArgs e)
{
BindPrinters();
}

private void FrmMeterVerifyPrintView_Shown( object sender, EventArgs e)
{
if (m_reportPrintBase != null && m_reportPrintBase.MainReport != null &&
m_reportPrintBase.MainReport.Validate)
{
BindReportData( this.m_reportPrintBase);
}
this.rptView.SetDisplayMode(DisplayMode.PrintLayout);
this.rptView.ZoomMode = ZoomMode.PageWidth;
// this.rptView.ZoomPercent = 100;
}

#region 加载报表数据

private void BindReportData(ReportPrintBase reportPrintBase)
{
// 报表信息有效
if (reportPrintBase != null && reportPrintBase.MainReport != null && reportPrintBase.MainReport.Validate)
{ // 支持的打印类型
#region 添加子报表加载事件,向子报表提供数据源支持
if (reportPrintBase.subreportProcessingEventHandler != null)
{
// 加载子报表指定的事件,每个子报表加载时通过此事件指向的方法添加对应的数据源
this.rptView.LocalReport.SubreportProcessing += reportPrintBase.subreportProcessingEventHandler;
}
#endregion 加载子报表事件
#region 添加报表

// 加载主报表文件流
this.rptView.LocalReport.LoadReportDefinition(reportPrintBase.MainReport.ReportFileStream);
// 添加主报表数据源
this.rptView.LocalReport.DataSources.Add(reportPrintBase.MainReport.DataSource);
if (reportPrintBase.SubReports != null && reportPrintBase.SubReports.Count > 0)
{
foreach (ReportBaseInfo rpt in reportPrintBase.SubReports)
{
// 加载子报表文件流
this.rptView.LocalReport.LoadSubreportDefinition(rpt.Name, rpt.ReportFileStream);
}
}

#endregion 添加报表
// 重新呈现(刷新)ReportViewer
this.rptView.RefreshReport();
} // 报表信息有效

}

#endregion 加载报表数据

private void FrmMeterVerifyPrintView_FormClosing( object sender, FormClosingEventArgs e)
{
this.rptView.Reset();
CloseStreams();
Application.DoEvents();
}

/// <summary>
/// 关闭当前所有文件流
/// </summary>
private void CloseStreams()
{
if ( this.m_streams != null && this.m_streams.Count > 0)
{
foreach (Stream s in this.m_streams)
{
s.SetLength( 0);
s.Flush();
s.Close();
}
this.m_streams.Clear();
}
}

#endregion

#region 获取所有打印机
/// <summary>
/// 获取当前安装在计算机上的所有打印机名称
/// </summary>
/// <returns></returns>
public static PrinterSettings.StringCollection GetAllPrintNames()
{
return System.Drawing.Printing.PrinterSettings.InstalledPrinters;
}
#endregion 获取所有打印机

#region 绑定打印机列表
private void BindPrinters()
{
cmbSelectPrinter.Items.Clear();
cmbSelectPrinter.DropDownStyle = ComboBoxStyle.DropDownList;
string printerName;
// 获取默认打印机
string defaultPrinterName = this.m_printDocument.PrinterSettings.PrinterName;
for ( int i = 0; i < PrinterSettings.InstalledPrinters.Count; i++)
{
printerName = PrinterSettings.InstalledPrinters[i];
cmbSelectPrinter.Items.Add(printerName);
if (printerName == defaultPrinterName)
{
cmbSelectPrinter.SelectedIndex = i;
}
}
}
#endregion 绑定打印机列表

View Code

代码
#region 打印

#region 判断是否为横向
/// <summary>
/// 判断是否为横向
/// </summary>
/// <param name="stm"> Rdlc文件流 </param>
/// <returns></returns>
private bool IsLandSapces(Stream stm)
{
string strPageWidth = "";
string strPageHeight = "";
XmlReader xmlReader = XmlReader.Create(stm);

if (xmlReader.ReadToFollowing( " PageWidth "))
{
strPageWidth = xmlReader.ReadElementString( " PageWidth ");
}

xmlReader.Close();

return strPageWidth == " 29.7cm ";
}

#endregion 读取XML文件

/// <summary>
/// 提供 Stream 对象以进行呈现的 CreateStreamCallback 委托指向的方法
/// 这里为将报表的每一个页面作为一个EMF图片存放，通常用于报表呈现
/// </summary>
/// <param name="name"> 流的名称 </param>
/// <param name="fileNameExtension"> 创建文件流时要使用的文件扩展名 </param>
/// <param name="encoding"> 指定流的字符编码的 Encoding 枚举器值。如果流不包含字符，则此值可能为 null。 </param>
/// <param name="mimeType"> 一个包含流的 MIME 类型的 string </param>
/// <param name="willSeek"> 指示流是否需要支持查找的 Boolean 值。如果值为 false，则流将为只前推，并将按其创建顺序发送到块区中的客户端。如果值为 true，则流可以任何顺序写入。 </param>
/// <returns> ReportViewer 控件可以写入数据的 Stream 对象 </returns>
private Stream CreateStream( string name, string fileNameExtension, Encoding encoding,
string mimeType, bool willSeek)
{
Stream stream = new FileStream(Path.GetTempPath() + name + " . " + fileNameExtension, FileMode.Create,FileAccess.ReadWrite,FileShare.ReadWrite);
// Stream stream = new FileStream(Path.GetTempFileName(), FileMode.Create,FileAccess.ReadWrite,FileShare.ReadWrite,8000,true);
m_streams.Add(stream);
return stream;
}

/// <summary>
/// 导出报表的每一个页面到一个EMF文件
/// </summary>
/// <param name="report"> ReportViewer.LocalReport </param>
/// <param name="pageSettings"> 页面设置 </param>
private void Export(LocalReport report,PageSettings pageSettings)
{
StringBuilder sbDeviceInfo = new StringBuilder();
if (pageSettings != null)
{
sbDeviceInfo.AppendLine( " <DeviceInfo> ");
sbDeviceInfo.AppendLine( " <OutputFormat>EMF</OutputFormat> ");
sbDeviceInfo.AppendLine(String.Format( " <PageWidth>{0}cm</PageWidth> ", FromInchToCM(pageSettings.PaperSize.Width)));
sbDeviceInfo.AppendLine(String.Format( " <PageHeight>{0}cm</PageHeight> ", FromInchToCM(pageSettings.PaperSize.Height)));
sbDeviceInfo.AppendLine(String.Format( " <MarginTop>{0}cm</MarginTop> ", FromInchToCM(pageSettings.Margins.Top)));
sbDeviceInfo.AppendLine(String.Format( " <MarginLeft>{0}cm</MarginLeft> ", FromInchToCM(pageSettings.Margins.Left)));
sbDeviceInfo.AppendLine(String.Format( " <MarginRight>{0}cm</MarginRight> ", FromInchToCM(pageSettings.Margins.Right)));
sbDeviceInfo.AppendLine(String.Format( " <MarginBottom>{0}cm</MarginBottom> ", FromInchToCM(pageSettings.Margins.Bottom)));
sbDeviceInfo.AppendLine( " </DeviceInfo> ");
}
else
{
string deviceInfo =
" <DeviceInfo> " +
" <OutputFormat>EMF</OutputFormat> " +
" <PageWidth>21cm</PageWidth> " +
" <PageHeight>29.7cm</PageHeight> " +
" <MarginTop>2.5cm</MarginTop> " +
" <MarginLeft>2.5cm</MarginLeft> " +
" <MarginRight>2.5cm</MarginRight> " +
" <MarginBottom>2.5cm</MarginBottom> " +
" </DeviceInfo> ";

sbDeviceInfo.AppendLine(deviceInfo);
}
Warning[] warnings;
m_streams = new List<Stream>();
report.Render( " Image ", sbDeviceInfo.ToString(), new CreateStreamCallback(CreateStream), out warnings);
foreach (Stream stream in m_streams)
stream.Position = 0;

}

/// <summary>
/// 当前页打印的输出
/// </summary>
/// <param name="sender"></param>
/// <param name="ev"></param>
private void PrintPage( object sender, PrintPageEventArgs ev)
{
if ( this.m_duplex)
{ // 双面打印
#region 双面打印
// 获取每份页数
int pagePerCopy = GetPageCountPerCopy( this.m_streams.Count, this.m_chkedCount);
if ( this.m_currentPageIndex > 0 && ( this.m_currentPageIndex + 1) % pagePerCopy == 1 && this.m_isBlank && pagePerCopy % 2 != 0)
{ // 输出空白页
// 当前页面不是第一页，且当前页面为此份报表第一页，且每份报表页数为奇数
Bitmap emptyImage = new Bitmap( 10, 10);
if (ev.PageSettings.Landscape)
{
ev.Graphics.DrawImage(emptyImage, new Rectangle( 0, 0, ev.PageBounds.Height, ev.PageBounds.Width));
}
else
{
ev.Graphics.DrawImage(emptyImage, ev.PageBounds);
}
// 标记已经打印空白页
this.m_isBlank = false;
}
else
{
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
if (ev.PageSettings.Landscape)
{
ev.Graphics.DrawImage(pageImage, new Rectangle( 0, 0, ev.PageBounds.Height, ev.PageBounds.Width));
}
else
{
ev.Graphics.DrawImage(pageImage, ev.PageBounds);
}
m_currentPageIndex++;
// 标记等待打印下一个空白页
this.m_isBlank = true;
}
#endregion 双面打印
}
else
{ // 单面打印
#region 单面打印
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
if (ev.PageSettings.Landscape)
{
ev.Graphics.DrawImage(pageImage, new Rectangle( 0, 0, ev.PageBounds.Height, ev.PageBounds.Width));
}
else
{
ev.Graphics.DrawImage(pageImage, ev.PageBounds);
}
m_currentPageIndex++;
#endregion 单面打印
}
ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
}
/// <summary>
/// 打印开始
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BeginPrint( object sender, PrintEventArgs e)
{
this.btnPrint.Enabled = false;
}
/// <summary>
/// 打印结束
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void EndPrint( object sender, PrintEventArgs e)
{
this.btnPrint.Enabled = true;
}

本文转自94cool博客园博客，原文链接：http://www.cnblogs.com/94cool/p/4276956.html，如需转载请自行联系原作者