We have a large number of reports with dynamically generated columns. We cannot create static reports since the columns to be displayed varies from user to user (and no, column groups are not an option since this reduces the performances too much).

The current solution is to design the report in VS with all the static info and grouping. We clear the data source in the report constructor. Then in the "NeedDataSource" event for the report (or table) we open the SQL query, examine the fields returned and create additional columns for the existing table based on the variable columns.

This works fine.

However, if we drill through to another report and navigate back, the table is recreated as it was at design time (without the extra columns). Furthermore there is no way to access the data source instance any more. The report and table data source reflect as NULL in the itemdatabound/binding events. It also seems as if a new instance of the report is created since all the other user added properties are gone / reset to NULL.

This effectively means we cannot use drill through and this is one feature we really need in our application.

<Cache provider="File">
      <Providers>
        <Provider name="File">
          <Parameters>
            <Parameter name="BasePath" value="C:\Temp\ReportingCache" />
          </Parameters>
        </Provider>
      </Providers>
    </Cache>

With the FileCache and FileCacheProvider how can you purge the file cache when the browser closes.

I'm attempting to purge reports from the cache when the browser is closed from a window.onbeforeunload event that triggers the purge with a fallback periodic trigger that delete any orphaned cache folders older then twice the SESSION TIMEOUT.

The {InstanceID}RenderingContext and {InstanceID}ProcessingReport exist in the System.Web.Caching.Cache and the WebForm.WebCacheManager adds an OnCacheItemRemovedCallback that calls Dispose which invokes a deletion of the rendering cache folder but does not pass the recursive as its secondary parameter.

When I manually remove the {InstanceId}RenderingContext and {InstanceId}ProcessingReport from Cache, the folders do not get automatically deleted.

I can manually delete the folders within my Purge trigger, but there is no correlation between the RenderID and the InstanceID and verifying the Folder CreationTimeUtc some times throws and Access Violation Error when from the ReportViewer under load when it attempts to Read {RenderId}/Page1.


Any suggestions would be greatly appreciated.

I have a report with a Cross tab which has check Boxes for individual employees for each date. I would like to insert a single row which holds employee information beneath the columns which have the check Boxes, but which ignores those columns for each record.

For Example:

Employee   9/1/2014  9/2/2014 9/3/2014

john doe         X             O                X
                           EMPLOYEE ID 1

jane doe        O              X               X
                           EMPLOYEE ID 2

Is this possible?

Hi,
I have created Telerik report as Report1.vb, I want to call this report in my webform. Is there any code to call report in webform on button click. If any idea please help me to resolve this issue.

Thanks
Syam Anil.

Hello everyone,

I want to export report object to database. 

The idea is to convert the object to byte array and then write to database.

But the problem is that the Telerik.Reporting.Report object cannot be converted to byte array because [Serializeable] attribute is not defined in the class.

My question is that, is there any solution to this. Can anyone give other solutions to export object to database or any workaround?

Thank you.

I'm just evaluating Reports.  The first question that comes to mind is: Can reports created in VS Designer be opened and modified in Standalone Designer, and/or Can reports created in be opened and modified in  Standalone Designer be opened and modified in VS Designer?  is any functionality lost?

Hi there 

Try to make it work the HTML5 Telerik report and I have not managed to get it, they can appreciate please attach a demonstration of this. Currently I have the latest version of Telerik Reporting Q2 2014 SP1 (Version: 8.1.14.804) and Visual Studio 2013. 

Thanks a lot 

I'm getting having a few issues with the MVC reporting implementation. I followed every step in this link here: http://www.telerik.com/help/reporting/mvc-report-viewer-extension-embedding.html, but I can't even display the product catalog report from adventure works. Initially, i was getting a JSON.Parse error in this function: On line 4, line 743 in the telerikReportViewer-8.1.14.804.js file included in my project.


After I stepped through the javascript, I found that the STATUS being passed into the function was a "parser error" and the ERROR was "unable to get report parameters". Initially, I was using the adventure works database and product catalog report, but I just decided to design my own from my own database. I used the report wizard inside Visual Studio 2012 and the preview worked great. However, as soon as I added it to the report viewer on my page, I get stuck here again.... Not sure what to do, because none of my reports take parameters. The report viewer shows up on my page no problem, but nothing is displayed.

My Razor page I'm displaying the report viewer on.

You can tell I tried just messing with adding paramters, but no luck.

Hello,

We need a reporting tool with the ability to report across multiple distinct cube data sources into a single cumulative report.  Our current tools can only target a single cube at a time.  They are the premade cubes from TFS and we don't want to create any new data structures.  Is this possible with Telerik reporting?

Thanks!

Hello,

I'm trying to print a report directly to a Epson TM-C3500 label printer. My report has a size of 50mm (width) x 100mm (height) in portrait orientation. 
On the paper-roll the label is 106mm (width) x 51mm (height). So the report has to be printed in landscape mode.

But this seems not to work. The report is always printed in portrait orientation and so it does not fit on the physical label. In the properties of the printer the landscape orientation is selected.

When I first export the report to PDF and print it via the PDF reader, it works perfectly. But the label printing takes place at a point of sale, so it has to work automatically and the way via pdf is not an option.

Any ideas where I can tweak the direct printing process? I wish to use ReportProcessor.PrintReport in the end.

Thanks
Erik