To clarify our usage scenario: we design reports directly against SQL tables, stored procedures, or views from the start. The report definition is dynamic and often driven by user input, so we rely heavily on runtime evaluation. In our current reporting system, the optimization happens automatically during execution: The engine inspects the report layout and selection formulas, then generates SQL that includes only the fields actually used. This means the designer doesn’t need to manually prune unused fields — the runtime engine handles it intelligently.
In Telerik Reporting, we envision a similar behavior: once the report definition is finalized (whether in the designer or programmatically), the engine could analyze which fields are referenced in expressions, filters, groupings, visibility conditions, etc., and optimize the data retrieval accordingly. This would be especially beneficial for stored procedures or views with wide schemas, where only a subset of fields are relevant to the report logic.
WebReportDesigner (Blazor) - permission to restrict "Build new data connections" and allow to use only "Select from existing data connections".
It isn't required, but would be nice have button "Test connection" in the bottom enabled to verify predefined connection
Use SqlDataSource SelectCommand xml element instead xml attribute - it allows to write complex sql requests in any tool and just put it into xml without changes and have it well-formatted and readable:
So, instead of
save it as
or even
The data source of my report contains grouping string values, among which are the '10000' and '1010Q'. These two values are always treated as the same string, and the corresponding records fall within the same report group, which is unexpected:
Currently, the is permission for disabling saving, but it disables only the "Save" button.
I would like to be able to disable the "Save As" button and keep the "Save" button active, or vice-versa.
The Telerik Web Forms Report Viewer Form VS item template does not install the Telerik.Reporting.Services.WebApi package. However, the controller created with this template has a using statement for it.
Steps To Reproduce
- Create a new Web Forms project.
- Right click on the project name > Add > New Item...
- Choose Telerik Web Forms Report Viewer Form <REPORTING_VERSION>.
- Build the project.
Expected behavior
The build succeeds.
Actual behavior
The build fails due to the missing package.
Screenshots
ADA Accessibility is a priority for our customers, so we are aiming to ensure logical tabbing order for keyboard users.
I've noticed that the RowHeadersPrintOnEveryPage attribute, while very useful for creating more readable PDF exports, seems to result in some strange screen reader behavior when set to True.
The first problem is with the strange tabbing order in the live environment. The second column header is the first to receive focus, followed by the remaining column headers, then the data fields under the first column receive focus in a vertical list, until finally the first column header receives focus. Without the default RowHeadersPrintOnEveryPage setting (False), the first column header is the first to receive focus, which is expected.
In addition to the wrong tabbing order, the RowHeaderPrintOnEveryPage causes the screen reader to announce the incorrect column associated with a particular cell. I use the Windows Narrator. Other screen readers may result in slightly different behavior.
I have a .NET project. I tried to add a CS-based report to it using the Visual Studio item template. However, when I opened it, I encountered an error message, which wasn't helpful.
After reaching out to the technical support, I was told that the Visual Studio Report Designer was not supported in .NET projects, and the alternative was either to open the CS-based report through the Standalone Report Designer or use TRDP reports (recommended for new reports) instead.
It would be nice if there were some warning about this, as it would save me some time and confusion, as at first, when I encountered the error message, I took the assumption that something was corrupted with my project.
I'm using the WinUI Report Viewer in my .NET 8 WinUI3 desktop application. All my reports initially render and display correctly, however, when the user clicks on the Print Preview button to switch to the print preview view, it causes my app to crash. This only occurs when using Versions 19.1.25.521 and above of the Telerik.ReportViewer.WinUI package. If I roll the NuGet back down to versions 19.0.25.313 and below, my application happily switches between interactive and print preview view without error.
Interestingly, if I force the Report Viewer to start in print preview view (with ViewMode="PrintPreview" in the xaml), it displays without error (though the toolbar print preview button is not showing as being toggled). I can then also switch to interactive mode once without error by toggling the print preview button. However, if I then attempt to switch back to the print preview mode, it again crashes.
The Initialize method in ReportViewer.cs is called from both the OnLoaded and OnApplyTemplate methods, which in turn calls the AttachModelEventHandlers method. This leads to it adding the event handlers to the model twice every time it is loaded. The DetachModelEventHandlers is only called once (in the OnUnloaded method), so if you keep unloading and reloading the control, it adds 2 event handler invocations but removes only one. This means each one is called at least twice (if you have only loaded the control once), then 3, 4, 5, etc times if you keep unloading and reloading it.
I've worked around this by adding code to my wrapper class to prune the duplicated handlers for now, but this needs fixing in the base code.
If you add transparency to a Graph line, for example, the Y-axis, with an alpha value: '150, 255, 255, 192', it is respected in the Standalone Report Designer, where the rendering format is Image.
In the Web Report Designer and in the HTML5 Report Viewer preview, the alpha value is ignored, and the color is rendered as '255, 255, 192', which removes the transparency.
In MSSQL, you may use syntax like 'StoredProcedureName;1' to indicate stored procedure versioning, but it is not yet supported by Telerik Reporting.
I use such syntax and need to remove the version to make this work in Telerik Reporting.
It would be great if you also added support for versioning in MSSQL stored procedures.
Using the text-indent CSS setting results in part of the text on the first line being cut off:
