SSRS RDL file - command Text - RAISE ERROR - reporting-services

Can we add RAISE ERROR in the command text of the RDL file for an SSRS Report?
My report is creating a blank PDF file due to missing data in the DB. I want to check the data, and if no data is found I need to raise the error. Is that possible?
Or after render call, how can we check the content data for the file? Is there any way to do that?
We are using SSRS-2008-R2 version.
and we are running thereports through a C#.net Application, so, i invoke the report through a Reporting Services's WebServices, and it return a byte array that represent the result of the reports, but the array byte always bring byte because, the reports has a header, hence occurs bytes.
i need to check the byte array to decide whether to generate the pdf or not.
How can i do that .?

There is a built-in function in SSRS that allows you to check if a DataSet has any rows.
=CountRows(“DataSet1”)
You can always check that and take appropriate action(s).
I like to use this in the Hidden property for a Tablix/Matrix, and hide it when the row count is 0.
=IIf(CountRows(“DataSet1”) = 0, True, False)
Also, I like to add a text box to the report that simply contains the words No data to report. Then I show that when the dataset is empty via it’s Hidden property.
=IIf(CountRows(“DataSet1”) <> 0, True, False)
No need to do a raise error, handle the problem with a little finesse. This works with all versions of SSRS.
EDIT:
Another way to do that is use a stored procedure for the dataset source. Handle all that logic there. Select the data into a temp/working table, check if the row count is 0, take whatever action you need to (send email, return data, or both).
Another way could be a data driven subscription; that is available if you are running SSRS enterprise edition. Then you could get a report that would alert you to any data anomalies you want to monitor for.

Related

Howto filter in Report Builder using IN or OR

I am trying to filter a series in a Reporting Services Report Chart using Report Builder (started directly from Reporting Server default Webinterface).
What I want is to filter a series on different values, originally by using an OR clause. Because this is not possible in the dialogue, I guess it was a too complicated task for the develoers to create the required logic implementing brackeds etc) I try to use the operator "IN".
I want to filter the values in my dataset like this:
IN('% Processor Time','Buffer cache hit ratio')
Several attempts to enter the strings into the one(!) textbox avaiable for this filter failed. Sometimes I get just NO DATA. If I just enter the strings like this:
% Processor Time, Buffer cache hit ratio
and confirm this, reopen the dialogue, the value is automatically changed to sth. like that:
"""% Processor Time, Buffer cache hit ratio"""
and after confirming this again, I get this unhandeled exception:
System.ArgumentNullException: Value cannot be null.
Parameter name: items2
at Microsoft.ReportingServices.Common.CollectionUtil.ElementsEqual[T](ICollection`1 items1, ICollection`1 items2, IEqualityComparer`1 comparer)
at Microsoft.ReportDesigner.Dialogs.Controls.FilterItemControl.SaveData()
at Microsoft.ReportDesigner.Controls.ListControlBinding.SaveData()
at Microsoft.ReportDesigner.Controls.PropertyControl.SaveData()
at Microsoft.ReportDesigner.Controls.PropertyDialog.OnClosing(CancelEventArgs e)
at System.Windows.Forms.Form.CheckCloseDialog(Boolean closingOnly)
After that I just tried to use ONE argument with the IN operator, but this also does not work because it delivers just NO DATA.
enter code hereSo my question is, does anyone know a solution for filtering a dataset using OR or IN clause in Microsoft Report Builder?

Getting a "one or more parameters required to run the report have not been specified" error

I am building a report that I would like to accept two values from the user, feed those into a query, and find the data associated with those entries.
For example, if you had a list of employees, performance measures, and values associated with those; then the user would select an employee name / performance measure, and they would get the scoring information on that employee for that measure.
I have two parameters, each being populated from SQL queries getting a distinct list of employee names and measures, and a table below that just pulls up information based on ~ 'WHERE name = #Name AND measure = #Measure' but when I click 'Preview' to run the report locally I get the error: "one or more parameters required to run the report have not been specified"
I know the parameters are working properly because I can feed their values directly into a textbox and the values populate correctly. Also, if I change the query to just accept one parameter (i.e. WHERE measure = #Measure) the query works.
I'm confused as to why this error is occurring since I know my parameters are functioning and being populated properly.
I experienced this behavior in .NET 4.0 using Local Reports (in .rdlc files), when one of the parameter's values was containing an emtpy string. Although setting the parameter was correct:
report.SetParameters(
new List<ReportParameter> {
new ReportParameter("Title", Messages.Title),
new ReportParameter("SubTitle", Messages.Subtitle))
}
);
It worked only as long as both parameters actually contained some characters, otherwise the mentioned exception was thrown.
This error is caused when you either
A) the parameter is spelled wrong in the actual report. Meaning that the query is expecting #Name but the report is passing #Names (or some other spelling).
or
B) Is it possible you are attempting to run the report with a default value on the parameter of NULL for #Name but the stored procedure requires an actual value?
This might be happening if you are building the report in Visual Studio and gave the #Name parameter a default value of (null).
Try removing the default value or making sure you #Name parameter has an actual value, even if it's just ''.
I had similar issue. Issue happened when you use SharedDataSource with parameters that are to have null value. If you use same query in embeded data source, there is no problem.
Unlike embebed data source, you have to define if parameters used in query of shared data sources are allowed to have null value as highlighted in screenshot here. In my case, there are two parameters in query of shared data source, that can have null value.
So after setting them to allow null, problem fixed!
This caused me many hours of pain. Turns out that it's to do with using a shared dataset.
Embed the dataset within your report instead and it works fine.
For me, setting the value of the parameter makes problem. I don't know why, but the parameter value was not able to accept a string.Empty or null. So i just gave a " " as value solves the error.
Sample
ReportParameter[] parameters = new ReportParameter[4];
parameters[0] = new ReportParameter("Name", EName);
parameters[1] = new ReportParameter("ShiftName", CurrentShift);
parameters[2] = new ReportParameter("Date", LoginDate);
if(ValidateReportData())//some condition
{
parameters[3] = new ReportParameter("Date1", LoginDate);
}
else
{
//parameters[3] = new ReportParameter("Date1", string.Empty);//this makes exception while calling Render function.
parameters[3] = new ReportParameter("Date1", " ");//Solves the issue.
}
I was having the same problem, it is now sorted on sql server 2008 r2.
I know this is now an old question,
but just to help others:
It was very simple really, just making sure the spelling including the case is the same and the use of #.
I have a shared dataset called currentSpaceByDrive with the following code:
SELECT
[DRIVE]
,[Volume_Size_GB]
,[VolumeSpaceAvailable_GB]
,[VolumePercentAvailable]
FROM monitoring.dbo.currentSpaceByDrive(#ServerID)
I add the shared dataset currentSpaceByDrive to my report and I give it the same name.
when I right click on it, the one on my report, dataset properties, the parameter is #ServerID.
#ServerID value comes from another dataset, called the_servers (where the user selects a serverID)
I have a report parameter also called #ServerID that gets its value from the_servers and is used to feed the #ServerID parameter on currentSpaceByDrive.
Too many #ServerID, I understand, but if you do your own test based on this, you will get it done.
See the image attached.
hope this helps
marcelo
check DataSet In Report Server , I had Similar Problem , I was Editing Shared Dataset in Visual Studio , but it didn't work , after an hour of frustration I checked dataset in report server and I found out it Is not updating with changes I made in visual studio , I Delete it and Redeploy Dataset Again from visual studio . it works .
Actually I had to:
Delete the SubReport object from the report.
Drag new object from Toolbox
Setup the SubReport name and report
In Paramateres "Add", and choose each parameter, and related value.
Then is works for me.
I think I have same issue my Parameter Supervisor is blank when I choose "Select All" which causes the error "One or more parameters were not specified for the subreport", but if I select a few supervisor name then the sub-report appears. It is puzzling because the Manager parameter value shows all value when "Select All" is checked, but it is not working on my Supervisor parameter. Note that Supervisor parameter is dependent on manager parameter.
I'm using shared DataSets for several reports, and the root cause of this issue was not mapping the input parameters from the report itself to the parameters of the shared dataset.
To fix, I navigated to the "Report Data" panel, opened the dataset (which is really linking to a shared dataset), clicked the "Parameter" tab, and then mapped the report parameters to the parameters of the shared dataset.

How to reference in SSRS report (in client mode) objects from application

I have a report created in SSRS in client mode, which is run disconnected: I create the data source in code and pass to the report as a DataView. It works ok.
But I need to be able to reference from the project to some objects (variables, whatever) from my application, as follows:
I need some totals that are not calculated based on data in report. e.g. the reports show total sales in a period, with own total, but I need to display a field in report footer - previous month total (actually they are about 10 other "previous" totals).
I need to have some columns show / hide based on some settings in the application (e.g. I have application option : Show Previous month sales)
Any thoughts on how to do this?
Thank you
Q1-> In order to use data in your reports, you need to specify the data inside of a Datasource object. You cannot simply use the variables if that is what your intentions were. So yes, you are doing this the right way. *** Sorry, you could theoretically used Report Parameters for this.
Q2-> This is the real reason to use Report Parameters. You can pass parameters to the report to do exactly this. If the HideColumn parameter (for example) is set to true, you could hide all the columns that need to be hidden.
http://msdn.microsoft.com/en-us/library/ms251750%28VS.80%29.aspx
For question 1 - the data - the easiest approach would be to create a DataTable in memory and add it as another dataset OR to add fields for your original dataview that contain these values.
Question 2 - To hide or show the columns based on settings make the column visibility an expression based on the value of a parameter, in your code behind set the parameter value to your application setting.

Reporting Services - translating labels into different languages

I'm finishing up my reports in my SQL Server 2008 Reporting Services project, and as one of the last steps, I need to make things translateable.
Since I have a bunch of reports, and they all share some identical labels, I decided to put all those labels I need to show into a SQL Server table, and I am surfacing that contents as a DataSet dsReportLabels in my reports.
This DataSet basically contains two fields: LabelName is the name of the label (e.g. "Count of items"), and Caption contains the text in the chosen language to be shown on the report.
But now here comes my mental block: how do I assign the dsReportLabels.Caption value to a e.g. textbox, based on the dsReportLabels.LabelName ?
So I need something like (pseudo-LINQ statement):
Textbox1.Value = from dsReportLabels
where LabelName = "some value"
select Caption;
but how do I express that in a Reporting Services code snippet?
I know how to reference things like Parameters!MyParameterName.Value and so on - but that doesn't really work here when I'm trying to extract a value from one column of the DataSet, given the value of the other column in that DataSet.
I bet this is totally easy to do in the end.... just can't seem to wrap my head around this right now.... anyone out there know how to do this?
This MSDN blog post describes one way of doing it. Essentially:
Create a lookup table with the LabelID, Language, and Caption.
Create a Stored Proc that gets all of the labelIDs and captions for a specified language.
Store the results of the SP in a dataset.
Store the dataset in a multi-value parameter.
Use the multi-value parameter in a custom lookup function.
So, the expression in your label textbox would call the custom function with the labelID, which would get the appropriate caption for the appropriate language.
Report Server 2008 also has a built-in Lookup function that may allow you to skip steps 4 and 5. If this is the case, your expression would call the built-in lookup function, which would go directly to the dataset. I don't have RS 2008, so I can't test this.

Parameter missing a value

I am new to reporting services and have a reporting services 2005 report that I am working on to use as a base report template for our organization. I am trying to place the date that the report was last modified on the report server into the page header of the report. However, I keep getting a 'ParamX' parameter is missing a value error when I try to This is what I have done:
Set up a Parameter ReportName with a default value of Globals!ReportName. It is also hidden and internal.
Set up a Dataset ReportHeader that calls a stored procedure that returns the date the report was last updated or another date, if the report is not on the report server. It has a parameter #ReportName assigned to the Parameter!ReportName.Value. The Dataset returns values when run on the dataset tab in the BI tool.
Set up a Parameter ReportVersion that has a default value Query From based on the dataset ReportHeader and picking the ModDate column. It is the last parameter in the report parameters list.
I assign a textbox to the parameter.
When I preview, I get "The 'ReportVersion' parameter is missing a value whether I place it in the report body or page header (which is where I want it). I have deleted and added the parameter again, toyed with the hidden and internal settings on it.
What does this error really mean, what I am missing, and can I even do this with parameters?
Thanks In Advance
Jim
If I understand what you're doing, it sounds like you want to be using a field where you're implementing a parameter...
You are returning the ModDate from the data source, correct? If you're doing this, you can simply throw a text box in there, and use something like this: =Fields!modDate.Value to display it.
Parameters are values that go in to the query, fields are what it returns.
Hope this helps...
EDIT:: OK so are you trying to retrieve the mod-date column value from the reportserver db? If that's what we're talking about, you'll need to add a few things to the report. Add a datasource to report db, a dataset containing the date (query below), a list object in the report linked to the dataset, and a textbox in said list object to display the field. If you hit the report server with a query like this:
SELECT MAX(ModifiedDate) AS ModDate FROM catalog WHERE name='myReportName'
That will return your modifieddate from the ReportSErvices Database as a field that you can use.