重金悬赏：在Web Form 中如何使用Crystal Report 打印报表。

[inca]

如何使用Crystal Report 打印报表？包含自定义的页眉页脚，自动分页，总的来说就像Web Form viewer中看到的一样。

是打印，不是预览。

好了，不罗嗦了，如果那位帮我解决了这个问题，感谢万分。

[w18ily]

NOTE
For information about how to edit the registry, view the "Changing Keys
and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and
Delete Information in the Registry" and "Edit Registry Data" Help topics in
Regedt32.exe. Note that you should back up the registry before you edit it.
If you are running Windows NT or Windows 2000, you should also update
your Emergency Repair Disk (ERD).
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Once these changes have been made, it will be necessary to stop and start IIS to
apply the permissions changes made to the ASPNET worker process.
When would I want to use this method for Printing?
Server side printing is most useful in an Intranet environment where the printers
installed to the server are connected to and accessible over the network. Clients
can be given the option to select a printer that is near their location and allow the
printing to be handled by the server. The requirements here are that the printers
be installed to the Web server, the local SYSTEM account is given access to the
printers and the Machine.config file holding configuration settings for the .NET
framework is edited to give the ASPNET worker process access to the system
settings on the server. Keep in mind that using this method involves changing
the default permissions on the server and is not recommended for applications
that are exposed to the Internet.
Printing the report on the client side via Internet
Explorer
This method of printing a report is useful in environments where client
computers do not have the ability to print using client side controls such as the
Adobe Acrobat reader or Microsoft Word.
This method displays an entire report in the Web Forms viewer control as one
continuous page such that using the printing capabilities of the browser can be
used. A button can be provided on the main page displaying the report in the
Web forms viewer that will redirect the client to a new Web form that displays
the entire report as one continuous page in the browser. The Viewer on the
second form can be formatted such that the group tree and toolbar are disabled
and the SeparatePages property of the viewer is set to False. A sample of how
to set these properties is below:
crReportDocument = New Income_Statement()
CrystalReportViewer1.ReportSource = crReportDocument
CrystalReportViewer1.SeparatePages = False
CrystalReportViewer1.DisplayGroupTree = False
CrystalReportViewer1.DisplayToolbar = False
Limitations using this method include the possibility of page breaks not
occurring in the desired locations
When would I want to use this method for Printing?
This method of printing a Web based report would be useful in an environment
where the client does not have access to the applications required to one of the
exported document formats (i.e. Adobe Acrobat Reader, Microsoft Word, MS
Excel). The main limitation of this method is that the positioning of page
headers, footers and page breaks cannot be controlled.
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Contacting Crystal Decisions for Technical Support
We recommend that you refer to the product documentation and that you visit
our Technical Support web site for more resources.
Self-serve Support:
http://support.crystaldecisions.com/
Email Support:
http://support.crystaldecisions.com/support/answers.asp
Telephone Support:
http://www.crystaldecisions.com/contact/support.asp

[w18ily]

Dim Fname as String
‘ The following code can be placed directly after the call to
‘ InitializeComponent() in the form’s constructor, or inside of
‘ a Button_Click event where the button is used by the client to
‘ get a printable copy of the report.
CrReportDocument = New ReportDocument()
‘ The following line of code loads the sample report “Chart.rpt” that installs
‘ with Visual Studio .NET
CrReportDocument.Load (“C:\Program Files\Microsoft Visual Studio .NET\Crystal
Reports\Samples\Reports\Feature Examples\Chart.rpt”)
Fname = “c:\exports\” & Session.SessionID.ToString & “.pdf”
CrDiskFileDestinationOptions = New DiskFileDestinationOptions()
CrDiskFileDestinationOptions.DiskFileName = Fname
CrExportOptions = crReportDocument.ExportOptions
With crExportOptions
.DestinationOptions = crDiskFileDestinationOptions
.ExportDestinationType = ExportDestinationType.DiskFile
.ExportFormatType = ExportFormatType.PortableDocFormat
End With
CrReportDocument.Export()
‘ The following code writes the pdf file to the Client’s browser.
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.WriteFile(Fname)
Response.Flush()
Response.Close()
‘delete the exported file from disk
System.IO.File.Delete(Fname)
When would I want to use this method for Printing?
Exporting a report to a printer-friendly format is useful to Web users who need
the ability to print multiple page reports.
You may wish to use the Web Forms viewer control to display the report on the
client and provide a button on the form that will perform the export. This will
give the user the ability to utilize the interactivity (Drill-Down, etc.) of the
Crystal report format within the viewer control and export the report to the more
printer-friendly format at will.
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Printing the report on the server side
(PrintToPrinter method)
Server side printing results in the report being generated on the Web Server and
being printed to a printer that is installed to the Web server.
Printing to a printer installed to the Web server requires that the process under
which ASP.NET is running have sufficient permissions to access Network
printers. In order to provide these permissions, changes to the account that the
ASPNET worker process runs under are necessary as well as changes to the
registry on the Web server.
By default, ASP.NET runs with the permissions of the local “machine”
(ASPNET account for the ASPNET worker process) account. In order to
achieve network printing through IIS (Internet Information Services), the
Framework should be run under the local SYSTEM account. To make this
change, it is necessary to edit the default configuration settings in the
Machine.config file. This file is located by default at:
C:\WINNT\Microsoft.NET\Framework\<VersionNumber>\CONFIG\
Where <VersionNumber> is the version of the .NET Framework installed to the
computer. The account setting is contained within the <ProcessModel> tag of
this file. The default setting for the account is:
userName="machine" password="AutoGenerate"
This can be changed to:
userName="SYSTEM" password="AutoGenerate"
Then save the file.
It is now possible to give the local SYSTEM account on the server permissions
to print. If the printer is a network printer, we must expose the network printer
to the local SYSTEM account. The reason behind this is that when a printer is
installed to a computer, the settings for this printer are stored in the registry
under the HKEY_CURRENT_USER registry hive (Registry file). The IIS
process will never use this registry hive since it always runs under the context of
the local SYSTEM account and cannot be logged onto a server as a “Current
User”. By default, the SYSTEM account does not have any printers set up in
the registry. There are two Microsoft knowledge base articles, Q152451 and
Q184291 that explain how to expose the printer settings to the System account.
Both of these articles require editing the registry on the Web server and copying
the printer settings from the HKEY_CURRENT_USER hive to the
HKEY_USERS/.DEFAULT hive.

[w18ily]

Crystal Reports for Visual Studio .NET
Printing Web based reports with Crystal Reports for Visual Studio
.NET
Overview
This white paper describes three scenarios available for printing reports that are
displayed over the Web using Crystal Reports for Visual Studio .NET.
Contents
INTRODUCTION ............................................................................................2
PRINTING CRYSTAL REPORTS IN ASP.NET APPLICATIONS...........................2
Exporting the report to a printer-friendly format........................................ 2
When would I want to use this method for Printing? .........................................3
Printing the report on the server side (PrintToPrinter method) ................. 4
When would I want to use this method for Printing? .........................................5
Printing the report on the client side via Internet Explorer ........................ 5
When would I want to use this method for Printing? .........................................5
CONTACTING CRYSTAL DECISIONS FOR TECHNICAL SUPPORT ......................6
Crystal Reports for Visual Studio .NET Printing Web based reports with Crystal Reports for Visual Studio .NET
6/24/2002 3:03 PM Copyright  2002 Crystal Decisions, Inc. All Rights Reserved. Page 2
Introduction
When viewing reports over the Web in the Web Forms viewer, users are not
given the option to print an entire report in the viewer’s toolbar. The reason for
this is that the Web Forms Viewer control emits static HTML3.2 or HTML4.0
script in the client’s browser providing a true Zero Client solution for viewing
reports. A limitation of static HTML is that printing is limited to printing
capabilities of the browser resulting in the ability to print the currently displayed
page only.
It is not uncommon for users to wish to print entire reports to a printer and this
paper offers the following solutions to printing an entire multi-page report
accessed over the Web:
• Exporting the report to a format that can be printed by a client’s
existing application.
• Printing the report on the server side using the “PrintToPrinter”
method.
• Printing the report on the client side via the Internet Explorer browser.
Printing Crystal Reports in ASP.NET Applications
In order to be able to print an entire Crystal report at once to a client’s printer,
client-side code must be executed. For example, Adobe Acrobat and Microsoft
Word print entire documents by supplying a client-side control that can access
the entire document and print it. Crystal Reports offers the ability to export
reports to several different formats that can be read by other applications.
Exporting the report to a printer-friendly format
The most popular method of client-side report printing is method of first
exporting the report to a printer-friendly format (usually Portable Document
Format (PDF) or Microsoft Word/ Rich Text Formats).
Essentially, the report is exported to a format that can be recognized and used by
a control installed on the client. The report is exported on the Web server and
the exported file is then streamed down to the client’s browser. Most clients
will have an application installed on the client computer that can read these
formats and print the report.
The following VB (Visual Basic) code demonstrates exporting a report to PDF
format and streaming it to the client’s browser to be displayed as a PDF
document.
‘ Define Crystal Reports variables
Dim crReportDocument As ReportDocument
Dim crExportOptions As ExportOptions
Dim crDiskFileDestinationOptions As DiskFileDestinationOptions
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注释：上面的顺序是反着的，不支持大文件，太难受了！
实际上只有三种方法：
一、导出为Excel、Word等；
二、局域网内用PrintToOrinter方法；
三、用IE;
浏览器可以在你按打印机图标时（包括选择打印菜单时）在后台从另一个网址打印页面。只要在aspx里写：
<HEAD>
<LINK REL=ALTERNATE MEDIA=PRINT HREF="printReport.aspx?name=haha" TYPE="application/postscript">
</HEAD>

然后，你的"printReport.aspx?name=haha"也用Crystal Report输出报表为Web页面，只是此页面不要花花绿绿，除了报表内容页面上不要有任何其它东西。

当用户按打印图标时，它的浏览页面没有任何变化，打印机从后台自动访问这个报表页面并且自动打印它。

[angel_lee]

关注！

[w18ily]

gz!

[mmkk]

导出Word或者Excel后再打印是比较好的解决方案

[chinaver2002]

本人的做法是，先导出为PDF文件，然后再打印，不是可实现吗

[w18ily]

导出为PDF文件，在打印时的效果是最好的，但是打印所需时间太长！

[w_rose]

你如何付费呢？

[everloveit]

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