我在Web应用程序上有SSRS报告runnig。我想直接在客户端的打印机上打印SSRS报告数据。该应用程序在我的电脑上运行良好，但是当我在IIS Web服务器上发布应用程序时，应用程序正在尝试查找安装在服务器计算机中的打印机，而不是检索客户端电脑的打印机设置。
我正在使用System.Drawing.Printing，有没有办法在客户端计算机上获取已安装打印机的设置，或者我们是否可以使用C＃从Web打印SSRS报告？
我正在使用以下代码。
using System;
using System.IO;
using System.Text;
using System.Globalization;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.Collections.Specialized;
using System.Collections.Generic;
using Microsoft.Reporting.WebForms;
using SeaWorld.Common.Helper;
namespace SeaWorld.BusinessObjects.BAL.Generated
{
public class ReportPrintDocument : PrintDocument
{
private PageSettings m_pageSettings;
private int m_currentPage;
private List<Stream> m_pages = new List<Stream>();
public ReportPrintDocument(ServerReport serverReport): this((Report)serverReport)
{
RenderAllServerReportPages(serverReport);
}
//public ReportPrintDocument(LocalReport localReport): this((Report)localReport)
//{
// RenderAllLocalReportPages(localReport);
//}
private ReportPrintDocument(Report report)
{
// Set the page settings to the default defined in the report
ReportPageSettings reportPageSettings = report.GetDefaultPageSettings();
// The page settings object will use the default printer unless
// PageSettings.PrinterSettings is changed. This assumes there
// is a default printer.
m_pageSettings = new PageSettings();
m_pageSettings.PaperSize = reportPageSettings.PaperSize;
m_pageSettings.Margins = reportPageSettings.Margins;
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (disposing)
{
foreach (Stream s in m_pages)
{
s.Dispose();
}
m_pages.Clear();
}
}
protected override void OnBeginPrint(PrintEventArgs e)
{
base.OnBeginPrint(e);
m_currentPage = 0;
}
protected override void OnPrintPage(PrintPageEventArgs e)
{
base.OnPrintPage(e);
Stream pageToPrint = m_pages[m_currentPage];
pageToPrint.Position = 0;
// Load each page into a Metafile to draw it.
using (Metafile pageMetaFile = new Metafile(pageToPrint))
{
Rectangle adjustedRect = new Rectangle(
e.PageBounds.Left - (int)e.PageSettings.HardMarginX,
e.PageBounds.Top - (int)e.PageSettings.HardMarginY,
e.PageBounds.Width,
e.PageBounds.Height);
// Draw a white background for the report
e.Graphics.FillRectangle(Brushes.White, adjustedRect);
// Draw the report content
e.Graphics.DrawImage(pageMetaFile, adjustedRect);
// Prepare for next page. Make sure we haven't hit the end.
m_currentPage++;
e.HasMorePages = m_currentPage < m_pages.Count;
}
}
protected override void OnQueryPageSettings(QueryPageSettingsEventArgs e)
{
e.PageSettings = (PageSettings)m_pageSettings.Clone();
}
private void RenderAllServerReportPages(ServerReport serverReport)
{
string deviceInfo = CreateEMFDeviceInfo();
// Generating Image renderer pages one at a time can be expensive. In order
// to generate page 2, the server would need to recalculate page 1 and throw it
// away. Using PersistStreams causes the server to generate all the pages in
// the background but return as soon as page 1 is complete.
NameValueCollection firstPageParameters = new NameValueCollection();
firstPageParameters.Add("rs:PersistStreams", "True");
// GetNextStream returns the next page in the sequence from the background process
// started by PersistStreams.
NameValueCollection nonFirstPageParameters = new NameValueCollection();
nonFirstPageParameters.Add("rs:GetNextStream", "True");
string mimeType;
string fileExtension;
Stream pageStream = serverReport.Render("IMAGE", deviceInfo, firstPageParameters, out mimeType, out fileExtension);
// The server returns an empty stream when moving beyond the last page.
while (pageStream.Length > 0)
{
m_pages.Add(pageStream);
pageStream = serverReport.Render("IMAGE", deviceInfo, nonFirstPageParameters, out mimeType, out fileExtension);
}
}
private void RenderAllLocalReportPages(LocalReport localReport)
{
string deviceInfo = CreateEMFDeviceInfo();
Warning[] warnings;
localReport.Render("IMAGE", deviceInfo, LocalReportCreateStreamCallback, out warnings);
}
private Stream LocalReportCreateStreamCallback(
string name,
string extension,
Encoding encoding,
string mimeType,
bool willSeek)
{
MemoryStream stream = new MemoryStream();
m_pages.Add(stream);
return stream;
}
private string CreateEMFDeviceInfo()
{
PaperSize paperSize = m_pageSettings.PaperSize;
Margins margins = m_pageSettings.Margins;
// The device info string defines the page range to print as well as the size of the page.
// A start and end page of 0 means generate all pages.
return string.Format(
CultureInfo.InvariantCulture,
"<DeviceInfo><OutputFormat>emf</OutputFormat><StartPage>0</StartPage><EndPage>0</EndPage><MarginTop>{0}</MarginTop><MarginLeft>{1}</MarginLeft><MarginRight>{2}</MarginRight><MarginBottom>{3}</MarginBottom><PageHeight>{4}</PageHeight><PageWidth>{5}</PageWidth></DeviceInfo>",
ToInches(margins.Top),
ToInches(margins.Left),
ToInches(margins.Right),
ToInches(margins.Bottom),
ToInches(paperSize.Height),
ToInches(paperSize.Width));
}
private static string ToInches(int hundrethsOfInch)
{
double inches = hundrethsOfInch / 100.0;
return inches.ToString(CultureInfo.InvariantCulture) + "in";
}
}
}
On print button click
void ctrlSettingToolbar_btnPrintPressed(object sender, EventArgs e)
{
try
{
ReportPrintDocument rp = new ReportPrintDocument(rptBillOfLoadings.ServerReport);
rp.Print();
}
catch (Exception ex)
{
LogHelper.PrintError("Error:", ex);
}
}
答案 0 :(得分：0)
你可以使用javascript函数window.Print（） 这将列出客户端机器打印机并打印页面。
希望下面的代码可以帮助..
<html>
<head>
<script>
function page()
{
window.print()
}
</script>
</head>
<body>
<input type="button" value="Print page" onclick="page()">
</body>
</html>
但这将打印整个页面..在您的情况下，它是一个打印报告
希望此链接可以指导您