How to render EMF format using ReportViewer Control I am getting Error

Question

Hi ,

I have tried using ReportViewer Control to render it in EMF Format.

using following Code

 

Warning[] warnings;

string[] streamids;

string mimeType;

string encoding;

string extension;

string deviceInfo;

DateTime l_dtmStartDateTime = new DateTime();

l_dtmStartDateTime = DateTime.Now;

deviceInfo = "<DeviceInfo><OutputFormat>emf</OutputFormat><StartPage>1</StartPage></DeviceInfo>";

byte[] bytes = rvwMain.ServerReport.Render(

"emf", deviceInfo, out mimeType, out encoding, out extension,

out streamids, out warnings);

long PageCount = streamids.Length;

long TotPages = rvwMain.ServerReport.GetTotalPages();

long l_lngStmTotPages = streamids.Length;

TimeSpan l_tsDuration = DateTime.Now.Subtract(l_dtmStartDateTime);

string l_strDuration = l_tsDuration.TotalMilliseconds.ToString();

 

I get NO error If I use any of the following Extensions

XML, NULL, CSV (Fastest), IMAGE, PDF, HTML4.0, HTML3.2, MHTML, EXCEL, and HTMLOWC

 

But when I try to render it using EMF I start getting following Error.

 

ERROR MESSAGE

System.Exception: ReportViewer.LoadReport::Microsoft.Reporting.WebForms.ReportServerException: An attempt has been made to use a rendering extension that is not registered for this report server. (rsRenderingExtensionNotFound)

 

I am using web application to run this sample.

 

I have read at following web site that If I render it as EMF then it will only render first page. and then I could use steamid.length to get the total pages.

http://blogs.msdn.com/bryanke/articles/71491.aspx

 

I actually wanted to get the total page count without effecting the application performance.

 

Your feed back in this repect is highly appreciated!

 

Thanks,

 

Anthony Desa