I have a local report for which i am binding the Dataset dynamically. I am trying to print this report using a seperate button on the page. I saw in the forums saying that the reportviewer can be converted to an EMF file, bind this to an image control and can Print this image using Javascript.
Can anyone help me with the sample code to print local report from the reportviewer (it may be in any approach.)
Thanks in advance.
Sekhar TThis thread should help.
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=790287&SiteID=1&mode=1&PageID=0
or at least get you on the right path.|||
Am sorry, my app is not windows, it is web based
I tried it but didn't help me a lot. My requirement is to allow clients to print reports from their browsers. I am using a single reportviewer control to display reports by dynamically binding different business objects and reports. One important thing to notice is that my connection string changes on user selection.
I am not really sure if there is another way using server mode to do this. I don't want to create reports to each database on the server. I am looking for a solution where i can use the same report for different databases.
|||When you say "One important thing to notice is that my connection string changes on user selection." you mean you're connecting to different reporting servers?
Here's my class. at the moment i'm confused as to why the 2nd device info has a start page of + 1 where the 1st one is set to 0. But it should work for you, assuming you know how to change the properties on each report server, aka changing the reportview.serverreport.reportpath, and the reportview.serverreport.reportserverurl. (these contain the same info as the connection string)
Hope this helps.
using System;
using System.IO;
using System.Data;
using System.Text;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.Collections.Generic;
using System.Collections.Specialized;
using Microsoft.Reporting.WebForms;
using Microsoft.Reporting;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Demo demo = new Demo();
demo.Run();
}
}
public class Demo : IDisposable
{
private int m_currentPageIndex;
private IList<Stream> m_streams;
private void Export(ServerReport report)
{
string deviceInfo =
"<DeviceInfo>" +
"<OutputFormat>EMF</OutputFormat>" +
" <MarginTop>0.25in</MarginTop>" +
" <MarginLeft>0.25in</MarginLeft>" +
" <MarginRight>0.25in</MarginRight>" +
" <MarginBottom>0.25in</MarginBottom>" +
" <StartPage>0</StartPage>" +
"</DeviceInfo>";
m_streams = new List<Stream>();
string encoding;
string mimeType;
string extension;
Warning[] warnings;
string[] streamIDs = null;
Byte[][] pages = null;
//Create Byte array containing the rendered image. of the 1st page.
Byte[] firstPage = report.Render("Image", deviceInfo, out mimeType, out encoding, out extension, out streamIDs, out warnings);
m_streams.Add(new MemoryStream(firstPage));
// The total number of pages of the report is 1 + the streamIDs
int m_numberOfPages = streamIDs.Length + 1;
pages = new Byte[m_numberOfPages][];
// The first page was already rendered
pages[0] = firstPage;
for (int pageIndex = 1; pageIndex < m_numberOfPages; pageIndex++)
{
// Build device info based on start page
deviceInfo = String.Format(
"<DeviceInfo>" +
"<OutputFormat>EMF</OutputFormat>" +
" <MarginTop>0.25in</MarginTop>" +
" <MarginLeft>0.25in</MarginLeft>" +
" <MarginRight>0.25in</MarginRight>" +
" <MarginBottom>0.25in</MarginBottom>" +
" <StartPage>{0}</StartPage>" +
"</DeviceInfo>", pageIndex+1);
//Render the page to a byte array.
pages[pageIndex] = report.Render("Image", deviceInfo, out mimeType, out encoding, out extension, out streamIDs, out warnings);
//create a stream of the page's byte array
m_streams.Add(new MemoryStream(pages[pageIndex]));
//set the position of the stream to 0 to make sure when the stream is read
//it starts from the beginning.
m_streams[m_streams.Count-1].Position = 0;
}
m_currentPageIndex = 0;
}
private void PrintPage(object sender, PrintPageEventArgs ev)
{
//create a new metafile based on the page that we're trying to print.
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
//draw the an image deciding what to draw, and where to place it on the page.
ev.Graphics.DrawImage(pageImage, 0, 0);
//increment to the next page.
m_currentPageIndex++;
//decide if we've read our last stream.
ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
}
private void Print()
{
//the name of the printer.
const string printerName = "Microsoft Office Document Image Writer";//;"\\\\NPSERVER\\MAIN"
//if there's nothing to print return
if (m_streams == null || m_streams.Count == 0)
return;
//create the printdocument object
PrintDocument printDoc = new PrintDocument();
//set the printername, deal w/ the printer being invalid
printDoc.PrinterSettings.PrinterName = printerName;
if (!printDoc.PrinterSettings.IsValid)
{
string msg = String.Format("Can't find printer \"{0}\".", printerName);
System.Diagnostics.Debug.WriteLine(msg);
return;
}
//attatch an event handler that will fire for each page that is printed.
printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
//call print method, which get's the process going and ultimately calls the printpage method via the eventhandler.
printDoc.Print();
}
public void Run()
{
//create a new reportviewer object
ReportViewer rv = new ReportViewer();
//set the serverreport properties
rv.ServerReport.ReportPath = "/CRAMReports/ConcentrationReport";
rv.ServerReport.ReportServerUrl = new System.Uri("http://localhost/reportserver");
//configure params
List<ReportParameter> myParams = new List<ReportParameter>();
ReportParameter param = new ReportParameter("NAV", "0", false);
myParams.Add(param);
//set the params based on the param list.
rv.ServerReport.SetParameters(myParams);
//call the export method that builds the stream list.
Export(rv.ServerReport);
//call the print funciton
Print();
//call dispose which closes all the streams.
Dispose();
}
public void Dispose()
{
if (m_streams != null)
{
foreach (Stream stream in m_streams)
stream.Close();
}
}
}
|||
I am using reportviewer in local mode, where i am not using sql reporting server.
what i meant saying different connection strings is for different business objects from different databases in sql server 2005. we have different databases in sql server 2005.
Does your solution print from the browser? shall give it a try now
Thnks
|||
Hi, i have add that code
and everything is very good when i run it local through the visual Studio 2005
but when i upload the Application and run it thought the IIS the printing doent work and i dont know why.
Note: i am using local report.
i hope any one help coz i need it so much
|||
Hi, i have add that code
and everything is very good when i run it local through the visual Studio 2005
but when i upload the Application and run it thought the IIS the printing doent work and i dont know why.
Note: i am using local report.
|||What type of printers do you have? What are the print drivers?|||
hi,
i dont know if i understand your question well or not but iam using printer HP DeskJet 1220C from my client PC,
i hope i answer your question ,
i hope you help me soon because i need this part so much.
Maylo
|||
Guys,
There seem to be a couple of confusions here (I may be misreading the messages, but I'm going to give this a try anyway).
1. Sekhar T, even though you are using "local mode", not server mode, it's not like the actual databinding is happening on the client. It's happening on your web server. So to my mind the fact that you are dynamically binding is not all that relevant. You have the same opportunity in a "separate button" as you do when the page is normally posted back, to evaluate the user's needs and re-bind.
2. While it is true that report pages can be rendered to EMF, that doesn't make sense in your case. First, because you would be doing that on the web server (which has nothing to do with printing in the browser, agreed) and second, because I am not sure localmode reports can render to EMFs.
3. *HOWEVER* localmode reports can render to PDFs and of course PDFs can be easily printed by the user. While the user can already export to PDF from the reportviewer interface, you can in fact use a separate button for this purpose on the web page. See code below; I will include some binding code.
Code Snippet
Partial Class pages_Default
Inherits System.Web.UI.Page
' here's a sketch of how to send the PDF
' back from your separate button
Protected Sub Button1_Click( _
ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Button1.Click
Dim buffer As Byte(), f As String, fs As System.IO.FileStream
f = System.IO.Path.GetTempFileName()
System.IO.Path.ChangeExtension(f, "PDF")
' there is probably a better way to set up the rendered PDF
' for redirecting to the Response output, but this one works.
' here is the binding bit. Revise to suit your dynamic situation.
' if you aren't really dynamically binding data against one
' loaded report, but rather changing
' reports to suit the user's needs, that will work too.
Dim ReportDataSourceX = _
New Microsoft.Reporting.WebForms.ReportDataSource()
ReportDataSourceX.Name = "DataSet1_Recipient"
ReportDataSourceX.Value = Me.SqlDataSource1
With Me.ReportViewer1.LocalReport
.DataSources.Clear()
.DataSources.Add(ReportDataSourceX)
buffer = .Render("PDF", Nothing, Nothing, Nothing, _
Nothing, Nothing, Nothing)
End With
fs = New System.IO.FileStream(f, System.IO.FileMode.Create)
fs.Write(buffer, 0, buffer.Length)
fs.Close()
fs.Dispose()
Response.ContentType = "Application/pdf"
Response.WriteFile(f)
Response.End()
System.IO.File.Delete(f)
End Sub
End Class
4. I am not so sure that it makes sense to have the separate button actually do the printing instead of bringing back the PDF and having the user print. If the user has to push a button anyway, shouldn't the user be able to make the normal printing decisions (such as what printer and features to use)? This is kind of the nature of a browser-based application.
5. If you really wanted javascript to print, the code would be a little different than what you see below, but not all that much. Instead of being a server-side control, I would use a "regular" button. The client side script would post to a URL that contained the required information for this user to get the report and data the way the user needed it. The client side script would receive back this data from its post and then probably save the file locally, finally sending the file out to the printer. However I don'tt think this is going to work in a whole bunch of security-limited cases. It requires too much control by script in the browser complex. Try what I"m suggesting in points 3 and 4, please, and think it over...
HTH,
>L<
