Cannot execute sub-report in list or table

I have a report that needs to invoke a sub-report for each row in a dataset.
I can execute the sub-report manually without problems. I can place the
sub-report on the main report and set the parameter to the first ID in my
recordset, and the report executes. If I place the sub-report in a list or
table, I get the following error:
An error has occurred while processing a sub-report. Details: Object
reference not set to an instance of an object
For both the table and list, I just added the container control to the main
report and just set the data source. I then add the subreport to the
container and hook up the parameters. I don't modify any other attributes
on the container. To experiment, I added a list to my main report and then
dragged the single-instance sub-report control that was working into the
container but I recieved the same error (I then drag the sub-report to
outside of the container and it renders just fine). I tried hard-coding the
parameters, but I continue to receive the error. I recieve this error in
both VS 2005 and SRS 2005 SP1.
Since the sub-report will execute outside the container, I believe I am
doing something incorrectly with having the sub-report in a container.
1) Does SRS support invoking a sub-report in a container, once per row?
2) If so, what is the recommend container? List, Table, or Matrix?
3) I found the log files to be of little help. I'm including the stack
trace for this error below. Any suggestions on how to troubleshoot this
issue?
Any help would be appreciated
- Chris
==============[ BEGIN STACK TRACE]=============================== w3wp!library!6!09/22/2006-15:50:27:: i INFO: Call to CreateReport( 'Trip',
'/BBSReporting', def)
w3wp!library!6!09/22/2006-15:50:27:: i INFO: Call to SetReportDefinition(
'/BBSReporting/Trip', def )
w3wp!library!7!09/22/2006-15:51:35:: i INFO: Call to GetPermissions:/
w3wp!library!7!09/22/2006-15:51:35:: i INFO: Call to GetSystemPermissions
w3wp!library!e!09/22/2006-15:51:40:: i INFO: Call to
GetPermissions:/BBSReporting
w3wp!library!e!09/22/2006-15:51:40:: i INFO: Call to GetSystemPermissions
w3wp!library!1!09/22/2006-15:51:43:: i INFO: Call to
GetPermissions:/BBSReporting/Trip
w3wp!library!1!09/22/2006-15:51:43:: i INFO: Call to GetSystemPermissions
w3wp!library!7!09/22/2006-15:51:50:: i INFO: Call to
GetPermissions:/BBSReporting/Trip
w3wp!library!1!09/22/2006-15:51:50:: i INFO: Call to GetSystemPermissions
w3wp!library!7!09/22/2006-15:51:52:: i INFO: Call to RenderFirst(
'/BBSReporting/Trip' )
w3wp!processing!7!9/22/2006-15:51:56:: e ERROR: An error has occurred while
processing a sub-report. Details: Object reference not set to an instance of
an object. Stack trace:
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.ProcessingContext.GetScopeValues(GroupingList
containingScopes, IScope containingScope)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateSubReportInstance(SubReport
subReport, ProcessingContext processingContext, Int32 index, IScope
containingScope, String& label)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateInstance(ReportItem
reportItem, Boolean setupEnvironment, Int32 index)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateInstances(ReportItemColInstance
collectionInstance, ReportItemCollection reportItemsDef)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.Merge.CreateInstances(ParameterInfoCollection
parameters, Boolean noRows)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.Merge.Process(ParameterInfoCollection
parameters, Boolean mergeTran)
at
Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateSubReportInstance(SubReport
subReport, ProcessingContext processingContext, Int32 index, IScope
containingScope, String& label)
w3wp!webserver!7!09/22/2006-15:51:57:: i INFO: Processed report.
Report='/BBSReporting/Trip', Stream=''Hello Chris,
Based on my research, the sub report could be in the data region such as
table, matrix and list.
The error message showes that the seb report could not render correctly.
Since you could render the sub report correctly out of the data region, it
may be related with your parameter.
Would you please let me know the parameter you use in the sub report?
Thank you!
Sincerely,
Wei Lu
Microsoft Online Community Support
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==================================================(This posting is provided "AS IS", with no warranties, and confers no
rights.)|||Hello Wei,
The sub-report takes a single integer parameter named CompanyID. I have a
recordset that returns a CompanyID. I bound the recordset to the list
control. I have the Parameter Name set to CompanyID and the Paramter Value
set to =Fields!CompanyID.Value. I selected both using the Sub-Report
Properties dialog box, the Parameters tab, using the dropdown arrows.
To continue to troubleshoot the issue, I've done the following:
=========================* Added a textbox to the list that displays the CompanyID value
(=Fields!CompanyID.Value). It displays the expected value.
* I attempted to hard-code the parameter value using the following
syntax:
="100"
=100
100
=CInt(100)
=CInt("100")
* I'm using the following SQL to simplify the main report: SELECT 100 as
CompanyID
* I created a new Main Report that had no controls other than the
sub-report. I used the query above, binding the sub-report parameter to
=First(Fields!CompanyID.Value, "DataSet1"). The sub-report renders. If I
add a list control, bind it to the dataset, drag the sub-report into it, it
will not render. If I drag it out of the list control, it will render. I
didn't change a thing on the sub-report control.
Is there anyway to find out what *exactly* is NULL?
I appreciate your assistance with this.
- Chris
"Wei Lu [MSFT]" <weilu@.online.microsoft.com> wrote in message
news:dtkYvMG4GHA.4280@.TK2MSFTNGXA01.phx.gbl...
> Hello Chris,
> Based on my research, the sub report could be in the data region such as
> table, matrix and list.
> The error message showes that the seb report could not render correctly.
> Since you could render the sub report correctly out of the data region, it
> may be related with your parameter.
> Would you please let me know the parameter you use in the sub report?
> Thank you!
> Sincerely,
> Wei Lu
> Microsoft Online Community Support
> ==================================================> Get notification to my posts through email? Please refer to
> http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
> ications.
> Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
> where an initial response from the community or a Microsoft Support
> Engineer within 1 business day is acceptable. Please note that each follow
> up response may take approximately 2 business days as the support
> professional working with you may need further investigation to reach the
> most efficient resolution. The offering is not appropriate for situations
> that require urgent, real-time or phone-based interactions or complex
> project analysis and dump analysis issues. Issues of this nature are best
> handled working with a dedicated Microsoft Support Engineer by contacting
> Microsoft Customer Support Services (CSS) at
> http://msdn.microsoft.com/subscriptions/support/default.aspx.
> ==================================================> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>|||Hello Chris,
Based on my test, I put the sub-report into the List control successfully.
I would like to send the sample to you. To get the sample, could you send
me a email to me? Please remove the ONLINE in my email address. I will keep
the information secure.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.|||Wei,
I sent my email address yesterday morning.
This afternoon I was able to recreate the problem with simple reports. If
necessary, I can send this to you.
Create three (3) reports, each with a single textbox with their name. I
named them "Report A", "Report B", and "Report C".
I add "C" to "B" as a sub-report. B renders fine - I see B and C.
I add "B" to "A" as a sub-report. A renders fine - I see A, B, and C.
I then added a dataset to A.
Declare @.Report table ( ID int )
INSERT INTO @.Report values (1);
INSERT INTO @.Report values (2);
SELECT * FROM @.Report
I added a List control and bound it to the dataset.
I then added a second instance of report B to the list.
At this point I get: Warning 1 [rsErrorExecutingSubreport] An error occurred
while executing the subreport 'subreport1': Object reference not set to an
instance of an object. [Path]\ReportA.rdl 0 0
I'm not accessing the database.
I'm not passing parameters.
If I add Report C to the list, it renders correctly, but B still does not.
This leads me to believe that there may be an issue with multiple levels of
nested reports within a list. This should be very easy to recreate. I can
zip my samples and send them to you if need be.
Visual Studio 2005
SQL Server Reporting Services 2005 SP1
Thanks,
Chris
"Wei Lu [MSFT]" <weilu@.online.microsoft.com> wrote in message
news:tFEApXf4GHA.4344@.TK2MSFTNGXA01.phx.gbl...
> Hello Chris,
> Based on my test, I put the sub-report into the List control successfully.
> I would like to send the sample to you. To get the sample, could you send
> me a email to me? Please remove the ONLINE in my email address. I will
> keep
> the information secure.
> Sincerely,
> Wei Lu
> Microsoft Online Community Support
> ==================================================> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> ==================================================> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>|||Hello Chris,
Thanks for the example of your issue.
I have reproduced it on my side.
I checked our internal database and found a workaround:
In "ReportB", you could add a List control and bound to a dataset which
have only one record. Then put the subreport for "ReportC" in the list
control.
Then in the "ReportA", you could add the subreport and put it in to the
list control without any error.
Please try this workaround on your side and let me know the result. Thank
you!
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.|||Wei,
I was able to resolve this as you suggested, but I ended up having to modify
other reports as once I added the report in question to the "dummy" list
control, any subsequent sub-reports resulted in the same error.
Any ideas when this will be fixed? A hot fix, SP2, etc?
Thanks for your help with this.
- Chris
"Wei Lu [MSFT]" <weilu@.online.microsoft.com> wrote in message
news:jceAud54GHA.2336@.TK2MSFTNGXA01.phx.gbl...
> Hello Chris,
> Thanks for the example of your issue.
> I have reproduced it on my side.
> I checked our internal database and found a workaround:
> In "ReportB", you could add a List control and bound to a dataset which
> have only one record. Then put the subreport for "ReportC" in the list
> control.
> Then in the "ReportA", you could add the subreport and put it in to the
> list control without any error.
> Please try this workaround on your side and let me know the result. Thank
> you!
> Sincerely,
> Wei Lu
> Microsoft Online Community Support
> ==================================================> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> ==================================================> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>|||Hello Chris,
Thanks for the update.
The workaround need to be done on all the sub-reports.
After contact with the product team, this issue will be fixed in SQL 2005
SP2.
If you have any questions, or concerns, please feel free to let me know.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.|||Hello Chris,
If you have any question or concerns, please feel free to let me know.
Sincerely,
Wei Lu
Microsoft Online Community Support
==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================This posting is provided "AS IS" with no warranties, and confers no rights.sql