Getting Images to render in HTML using Web Service (SOAP)

I have created a web app that uses the reporting services Web Service to
pull reports from the SQL Server.
The web server is on one machine, SQL Server on another and I use the web
service to get the reports. I do not use URLs in any way in order to keep as
much information hidden as possible.
I have been able to list all reports, select a report, get back the
parameters required, set the parameter values and render reports using
ReportingService.Render
HOWEVER...
The reports that work do not include charts (graphics). When I render a
report using my app, if it has no chart I can view it in HTML, PDF, TIF,
Excel and MHTML. If it has a chart then for PDF, Excel and TIF all is fine.
If I try to use HTML or MHTML I get a big empty space where my charts should
be.
In reading the BOL under ReportingService.Render Method
I found this: "StreamIds
[out] The stream identifiers. These IDs are passed to the RenderStream
method. You can use them to render the external resources (images, etc.)
that are associated with a given report. "
I have found this topic:
ms-help://MS.RSBOL80.1033/RSPROG/htm/rsp_ref_soapapi_service_lz_49f6.htm
ReportingService.RenderStream Method
I read the code, and I have tried to implement it as in the BOL. I am able
to write the images onto the web-server hard-drive, and the image place
holder properties no longer point to my SQL server (which they did at first)
but I still don't get an image.
For example, my image is actually at:
http://sandy.murdocks.on.ca/1/reports/temp/C_79_S
It is there and it works. Now my report opens in a new window since I do the
final call to open it like this:
Response.AddHeader("Content-Disposition", "attachment; filename=" &
fileName)
Response.BinaryWrite(data)
When I right click on the image place holder I get this:
file:///C:/Documents%20and%20Settings/Administrator/Local%20Settings/Temporary%20Internet%20Files/Content.IE5/QPIH2VE9/1/Reports/Temp/C_79_S
The images don't seem to get from being written on the drive, to being
picked up for display.
My code for writing the images looks like this:
If format = "HTML4.0" Then
For Each streamid In streamIDs
image = rs.RenderStream(strpath, "HTML4.0", streamid,
Nothing, Nothing, parameters, Nothing, Nothing)
Dim stream As System.IO.FileStream = _
System.IO.File.OpenWrite(Application("TempReports") &
streamid)
stream.Write(image, 0, CInt(image.Length))
stream.Close()
Next
End If
Sandy Murdock MCPlook at my previuos post:
http://www.microsoft.com/sql/community/newsgroups/dgbrowser/en-us/default.mspx?&query=rome&lang=en&cr=US&guid=&dg=microsoft.public.sqlserver.reportingsvcs&p=1&tid=a830cc14-9b06-496b-b1f4-e55ab3611f0b
Antonio
"Roger Twomey" wrote:
> I have created a web app that uses the reporting services Web Service to
> pull reports from the SQL Server.
> The web server is on one machine, SQL Server on another and I use the web
> service to get the reports. I do not use URLs in any way in order to keep as
> much information hidden as possible.
> I have been able to list all reports, select a report, get back the
> parameters required, set the parameter values and render reports using
> ReportingService.Render
> HOWEVER...
> The reports that work do not include charts (graphics). When I render a
> report using my app, if it has no chart I can view it in HTML, PDF, TIF,
> Excel and MHTML. If it has a chart then for PDF, Excel and TIF all is fine.
> If I try to use HTML or MHTML I get a big empty space where my charts should
> be.
> In reading the BOL under ReportingService.Render Method
> I found this: "StreamIds
> [out] The stream identifiers. These IDs are passed to the RenderStream
> method. You can use them to render the external resources (images, etc.)
> that are associated with a given report. "
> I have found this topic:
> ms-help://MS.RSBOL80.1033/RSPROG/htm/rsp_ref_soapapi_service_lz_49f6.htm
> ReportingService.RenderStream Method
> I read the code, and I have tried to implement it as in the BOL. I am able
> to write the images onto the web-server hard-drive, and the image place
> holder properties no longer point to my SQL server (which they did at first)
> but I still don't get an image.
> For example, my image is actually at:
> http://sandy.murdocks.on.ca/1/reports/temp/C_79_S
> It is there and it works. Now my report opens in a new window since I do the
> final call to open it like this:
> Response.AddHeader("Content-Disposition", "attachment; filename=" &
> fileName)
> Response.BinaryWrite(data)
> When I right click on the image place holder I get this:
> file:///C:/Documents%20and%20Settings/Administrator/Local%20Settings/Temporary%20Internet%20Files/Content.IE5/QPIH2VE9/1/Reports/Temp/C_79_S
> The images don't seem to get from being written on the drive, to being
> picked up for display.
> My code for writing the images looks like this:
> If format = "HTML4.0" Then
> For Each streamid In streamIDs
> image = rs.RenderStream(strpath, "HTML4.0", streamid,
> Nothing, Nothing, parameters, Nothing, Nothing)
> Dim stream As System.IO.FileStream = _
> System.IO.File.OpenWrite(Application("TempReports") &
> streamid)
> stream.Write(image, 0, CInt(image.Length))
> stream.Close()
> Next
> End If
>
> Sandy Murdock MCP
>
>|||Thank you!
I was able to take your solution and from it build one that works for me. I
was stuck.
Thanks.
"Antonio Rome" <AntonioRome@.discussions.microsoft.com> wrote in message
news:61BF34C8-98DB-4388-8E06-F5F8C1F22BBE@.microsoft.com...
> look at my previuos post:
>
http://www.microsoft.com/sql/community/newsgroups/dgbrowser/en-us/default.mspx?&query=rome&lang=en&cr=US&guid=&dg=microsoft.public.sqlserver.reportingsvcs&p=1&tid=a830cc14-9b06-496b-b1f4-e55ab3611f0b
> Antonio
>
> "Roger Twomey" wrote:
> > I have created a web app that uses the reporting services Web Service to
> > pull reports from the SQL Server.
> >
> > The web server is on one machine, SQL Server on another and I use the
web
> > service to get the reports. I do not use URLs in any way in order to
keep as
> > much information hidden as possible.
> >
> > I have been able to list all reports, select a report, get back the
> > parameters required, set the parameter values and render reports using
> > ReportingService.Render
> >
> > HOWEVER...
> >
> > The reports that work do not include charts (graphics). When I render a
> > report using my app, if it has no chart I can view it in HTML, PDF, TIF,
> > Excel and MHTML. If it has a chart then for PDF, Excel and TIF all is
fine.
> > If I try to use HTML or MHTML I get a big empty space where my charts
should
> > be.
> >
> > In reading the BOL under ReportingService.Render Method
> > I found this: "StreamIds
> > [out] The stream identifiers. These IDs are passed to the RenderStream
> > method. You can use them to render the external resources (images, etc.)
> > that are associated with a given report. "
> >
> > I have found this topic:
> > ms-help://MS.RSBOL80.1033/RSPROG/htm/rsp_ref_soapapi_service_lz_49f6.htm
> > ReportingService.RenderStream Method
> >
> > I read the code, and I have tried to implement it as in the BOL. I am
able
> > to write the images onto the web-server hard-drive, and the image place
> > holder properties no longer point to my SQL server (which they did at
first)
> > but I still don't get an image.
> >
> > For example, my image is actually at:
> > http://sandy.murdocks.on.ca/1/reports/temp/C_79_S
> >
> > It is there and it works. Now my report opens in a new window since I do
the
> > final call to open it like this:
> > Response.AddHeader("Content-Disposition", "attachment; filename=" &
> > fileName)
> > Response.BinaryWrite(data)
> >
> > When I right click on the image place holder I get this:
> >
file:///C:/Documents%20and%20Settings/Administrator/Local%20Settings/Temporary%20Internet%20Files/Content.IE5/QPIH2VE9/1/Reports/Temp/C_79_S
> >
> > The images don't seem to get from being written on the drive, to being
> > picked up for display.
> >
> > My code for writing the images looks like this:
> >
> > If format = "HTML4.0" Then
> > For Each streamid In streamIDs
> > image = rs.RenderStream(strpath, "HTML4.0", streamid,
> > Nothing, Nothing, parameters, Nothing, Nothing)
> >
> > Dim stream As System.IO.FileStream = _
> > System.IO.File.OpenWrite(Application("TempReports") &
> > streamid)
> >
> > stream.Write(image, 0, CInt(image.Length))
> > stream.Close()
> > Next
> > End If
> >
> >
> > Sandy Murdock MCP
> >
> >
> >|||I've been rendering chart images successfully for a report using the
ReportingService web services for a few weeks now. Today I had to add a
parameter to the report and now after I call my render method and loop
through the returned streamId's to get the images, I get the exception:
"rsStreamNotFound The stream cannot be found. The stream identifier that is
provided to an operation cannot be located in the report server database."
Why would this be happening?! I'm looping through the very streamId's that
the render method just returned to me!
Thanks in advance, Brian Parker