I have created an abstract class in my report library that inherits from Telerik.Reporting.Report. When I try to load the project's assembly in the Standalone Report Designer to import those reports as TRDP, an exception is thrown while the application tries to load the assembly that there are report types that do not have a parameterless constructor.

To resolve the issue, I had to remove the 'abstract' modifier. However, that should not be necessary. The wizard should ignore abstract classes or at the very least, let me import the other report types while displaying a message that there are report types with parameterless constructors.

When trying to open reports from an assembly in the Standalone Report Designer so that they can be imported, if there are types that inherit from Telerik.Reporting.Report that do not have a parameterless constructor, this will cause an exception as it is required for the report types to have such a constructor, otherwise, the wizard cannot import them into TRDP.

In this scenario, the report types that do not have a parameterless constructor should be written to the trace or in the exception message dialog so that the user can see which are the problematic types and correct them.

We have reports that contain a table of images. This seems to work great in the designer and when generated to a PDF without accessibility turned on. However, with accessibility turned on and rendering to a PDF, it throws an exception:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.TryAttachToParentNode(ProcessingInstanceIdentifier id, PdfOrderedReference element, Int32 rowIndex, Int32 columnIndex)
   at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.TryAttachToParentNode(IProcessingElement processingElement, IProcessingElement parentProcessingElement, PdfOrderedReference taggedElementReference)
   at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.AttachNonLeafNode(LayoutElement element, PdfOrderedReference taggedElementReference)
   at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.InitTaggedElement(AccessibilityPdfElement pdfElementType)
   at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.AddFigureElement(ITableCell element)
   at Telerik.Reporting.Processing.ProcessingElementVisitor.Visit(LayoutElement element)
   at Telerik.Reporting.Writing.AccessibilityElementWriter.StartWrite(ReportItemBase element, Int32& index)
   at Telerik.Reporting.Writing.VisualElementWriter`1.StartWriteAccessibilityItem(ReportItemBase item, ElementPageInfo pageInfo, DocumentWriter writer)
   at Telerik.Reporting.Writing.VisualElementWriter`1.WriteClientFocusableItems(T element, ElementPageInfo pageInfo, DocumentWriter writer)
   at Telerik.Reporting.Writing.ReportItemBaseWriter`1.StartWrite(T element, ElementPageInfo pageInfo, DocumentWriter writer)
   at Telerik.Reporting.Writing.ElementWriter`1.Telerik.Reporting.Writing.IElementWriter.StartWrite(LayoutElement element, ElementPageInfo pageInfo, DocumentWriter writer)
   at Telerik.Reporting.Writing.WriteOperationsDispatcher.Visit(PictureBox pictureBox)
   at Telerik.Reporting.Processing.ProcessingElementVisitor.Visit(LayoutElement element)
   at Telerik.Reporting.Writing.DocumentWriter.Telerik.Reporting.BaseRendering.IWriter.WriteStartElement(LayoutElement element, ElementPageInfo pageInfo)
   at Telerik.Reporting.Paging.PageElementsLayer.OutputToPage(IPageHandler handler)
   at Telerik.Reporting.Paging.PageContent.Output(IPageHandler handler)
   at Telerik.Reporting.Paging.PageCompositionBase.OutputPageContent(Stopwatch stopwatchOutputContent, PageContent pageContent)
   at Telerik.Reporting.Paging.PageCompositionBase.<>c__DisplayClass124_0.<CreatePageContentOutputTask>b__0()

In the attached report, all items in the detail section have Docking set to Top.

In the Interactive view of the report designer, the report looks fine.

In PrintPreview mode though, some items overlap.

There is an issue in .NET 9 when using a mounted network drive. When resolving reports, I get the following exception:

The issue seems to be related to a regression introduced in .NET 9:

• For a network drive, System.Windows.Forms.Application.StartupPath returns a path with \?UNC\ prefix
• Work with 'Mounted Network Drive' in .NET 9.0

Consider finding a way to work around this issue.

I pass the value of an Integer Report Parameter as '11000000000000003' from the viewer's setup. In the viewer though it appears as 11000000000000004. The wrong value 11000000000000004 is seen also in the 'parameters' request passed from the viewer to the service.

The issue is reproducible in the HTML5 Report Viewers and in the Blazor Native Report Viewer.

Currently, TIF images cannot be selected as pictureBox values from the file dialog of the Standalone Report Designer. However, the documentation states that it is a supported image format:

• PictureBox Report Item Overview

I have a .NET Framework 4.7.2 ASP.NET MVC project.

I am currently on Telerik.Reporting 19.0.25.211. I also have Telerik.Licensing package 1.4.10 installed on the project.

After upgrading my project to Telerik.Reporting 19.0.25.313, without touching the licensing package, in my .csproj file I'm seeing Telerik.Licensing.Runtime reference is set to 1.4.6.0, although the nuget package manager says that I have 1.4.10 installed.

In the project References also appeared a reference to the old Telerik.Licensing version after the update.

The property UserIdentity.Current is decorated with a [ThreadStatic] attribute, that guarantees a new instance will be created per each thread, when used in a synchronous context.

In asynchronous context, e.g. when an await operation is performed, the current thread is released, and another thread from the thread pool may take over. This can lead to the UserIdentity being overridden or conflicting with another request.

If I render a report that produces zero pages in the Native Angular Report Viewer, the rendering will fail with an exception in the browser console but it won't be caught by the viewer's error event.

This exception breaks the report document generation and it should be caught by this event according to the Handle errors in Telerik Reporting - Telerik Reporting article.

Sometimes I need to be able to allow the users to choose not only the date but the time as well when displaying DateTime report parameters in my reports. There is no out-of-the-box functionality to achieve this and I am forced to implement custom parameter editors -  Creating and Using Custom Parameter Editors in HTML5 ReportViewer - Telerik Reporting.

I should be able to set whether a DatePicker or DateTimePicker widget should be used for DateTime parameters from the report viewer's initialization options, such as how I can change the editor for single/multi-value parameters in the HTML5 report viewers - HTML5 Report Viewer Options Overview - Telerik Reporting.

Hi,

I've attached the following abstraction that I made which renders pdfs using a TRDP file.

In an environment where we're bulk generating documents, this falls over as the returning code can return documents from other threads.

This solution is fixable by adding in a lock (commented out in the example), but it degrades the performance quite a bit and users wouldn't expect this behaviour.

This has been reported previously: https://www.telerik.com/forums/is-the-reportprocessor-renderreport-function-thread-safe

I'm using the 2025.1.205 NuGet Packages.

Regards,

Hayden

If I have set up cascading report parameters, the dependant parameter's value is evaluated before the data source is updated.

This can cause issues when complex expressions are used to set the value since the values of the fields won't be accurate.

For example, if I use a DateTime parameter and need to add minutes to the date based on a field from the data source, and the data is filtered based on the value of another report parameter, I have to use the IsNull() function to avoid providing a null value(because the field will be null before the data source is re-evaluated):

= AddMinutes(Today(), IsNull(First(Fields.IntervalMinute), 0))

I followed the instructions from the Loading .NET 9 assemblies in the Standalone Report Designer for .NET - Telerik Reporting article to use the Standalone Report Designer for .NET with the .NET 9 runtime so that I can load .NET 9 assemblies in it but it crashes on startup:

After updating to Telerik Reporting v19.0.25.211, the relative path provided to the UriReportSourceResolver is no longer working.

For example, I used to provide only the name of the directory with the reports(e.g. "Reports") to the UriReportSourceResolver, and if there was such a subdirectory inside the project's base directory, the reports were successfully resolved.

This is no longer the case with v19.0.25.211. With this version, I have to provide the absolute path to the "Reports" directory for it to work.