After updating the Telerik Reporting packages to v17.2.23.1010 and opting out to still use the Gdi graphics engine, when I attempt to render a report to PDF on Linux, the rendering fails with the following error:
Error: 0 : An error occurred while rendering the report in separate thread: System.NullReferenceException: Object reference not set to an instance of an object.
at Telerik.Reporting.Paging.PageCompositionBase.<>c__DisplayClass87_0.<CreatePages>b__0()
at Telerik.Reporting.Paging.PageCompositionBase.CreatePages()
at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(LayoutElement root, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback, PageSettings pageSettings)
at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(Report report, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback)
at Telerik.Reporting.Processing.ReportProcessor.RenderCore(ExtensionInfo extensionInfo, IList`1 processingReports, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback)
at Telerik.Reporting.Services.Engine.ReportRenderer.Render(ReportRendererArgs args)
at Telerik.Reporting.Services.Engine.Rendering.RenderWithCulture(ReportRendererArgs args)
at Telerik.Reporting.Services.Engine.Rendering.ThreadFunc(Object o)
In the Desktop Report Designers, you may display the Text of the Tooltips on several lines by adding new lines (\n) inside the text.
In the HTML5 Viewrs, the new lines are ignored and the text is displayed on a single line. You may work around this by replacing the new lines with <br /> elements. It would be much easier for the users if this is done in the code of the viewer instead.
We upgrade to 17.2.23.1010 and after going through the report Upgrade Wizard we are getting this error for the CheckBox item:
Error CS0266 Cannot implicitly convert type 'System.Drawing.ContentAlignment' to 'Telerik.Drawing.ContentAlignment'. An explicit conversion exists (are you missing a cast?)
Conditional formatting property already exists in Telerik.Reporting.LegendItem class however does not exist on Telerik.Reporting.GraphLegend.
Would be great to have a ConditionalFormatting property into the Telerik.Reporting.GraphLegend to allows to perform bindings on this element.
Exemple of use case not possible currently: Bind the GraphLegend.Position property with an expression.
The issue is a known problem for Skia and Skiasharp.
It looks like the function MatchTypeface is deprecated and was removed with this Skiasharp PR.
HTML5 Report Viewer installation resources contain an old version of the Kendo blueopal theme - C:\Program Files (x86)\Progress\Telerik Reporting 2024 Q1\Html5\ReportViewer\styles.
Please update the kendo stylesheets to the Kendo version the report viewer currently uses.
.jpg){kind=avatar}
When the Visual Studio Report Designer is used in VS 2022, Custom User Functions declared in the project containing the reports do not appear inside the designer's expression editor.
The functions do work when previewing the report but this issue forces users to type the function calls manually.
I am using Kendo UI Spreadsheet control in our project to present Tabular contents that end user can easily modify just like a normal spreadsheet operations and I saved it in database using toJSON method provided by kendo spreadsheet.
When I will get the database driven JSON data from kendo spreadsheet as mentioned above, I want to present it in Telerik Reporting using Table (Datasource of that Table will be from JSON data I saved earlier).
Currently there is no such feature available in Telerik Reporting and I would like to request that feature to be included in future release.
Thanks
The RTF rendering automatically switches to the Tables rendering mode whenever a Crosstab/Table/List is detected in a report. This rendering mode throws an exception whenever the report contains PictureBox with one of the following sizing options.
- Center
- Normal
- Stretch
- ScaleProportional
The RTF export should work with all PictureBox sizing options regardless of the rendering mode.
To work around the issue currently, one can either force the rendering engine to use the Frames rendering mode using the RenderingMode device information property or set the Sizing property of all picture boxes in the report to AutoSize.
When I render one of my reports I receive the error message “A generic error occurred in GDI+”.
I figured out that one HtmlTextBox receives quite a long HTML from the data source - exceeds 32 768 characters. In my experiments, the error starts appearing if the text is longer than 32 775 chars.
In this case, the Reporting engine shouldn't throw a misleading GDI+ error but instead throw a more specific exception.
When a report contains multiple DateTime parameters, the viewer assigns the first value to all of them regardless of their default values or the values passed in the viewer's report source.
Additionally, if one clicks the preview button quickly after changing the value of a DateTime parameter, the old value is passed to the service even though the parameter editor is updated. To avoid this, the user needs to wait a second before previewing.
When rendering a report that displays an image through the PictureBox item with binary data in multiple threads within a Docker container, the following error is thrown:
Message=Concurrent operations from multiple threads on this type are not supported.
Source=DockerBlazorApp
StackTrace:
at Test.Reporting.Services.ReportService.<>c.<RenderReport>b__4_0(Object innerSender, ErrorEventArgs eventArgs) in C:\Users\dnikolov\Downloads\dockerblazortestappfortelerik\DockerBlazorTestAppForTelerik\DockerBlazorApp\Services\ReportService.cs:line 49
at Telerik.Reporting.Report.OnError(Object sender, ErrorEventArgs e)
at Telerik.Reporting.Report.RaiseError(Object sender, ErrorEventArgs e)
at Telerik.Reporting.Processing.Report.RaiseReportError(ProcessingElement sender, ErrorEventArgs args)
at Telerik.Reporting.Processing.Report.RaiseError(ProcessingElement sender, Exception exception)
at Telerik.Reporting.Processing.ProcessingElement.Process(IDataMember dataContext)
at Telerik.Reporting.Processing.ReportSectionBase.ProcessItem()
at Telerik.Reporting.Processing.DetailSection.ProcessItem()
at Telerik.Reporting.Processing.ReportItemBase.ProcessElement()
at Telerik.Reporting.Processing.ProcessingElement.Process(IDataMember dataContext)
Hi,
For our product we were looking into adding additional Request headers to the HTTP requests made by the Telerik Reporting library to the webservice data endpoints for our reports.
We tried adding the headers through a custom DelegatingHandler or HttpClientHandler, but found those were not being picked up.
Not when using the Web Report Designer or Blazor Report Viewer.
Any change we could register such a DelegatingHandler or HttpClientHandler?
Or any other suggestion on a how to add additional headers to the outgoing requests?
The following exception is thrown when rendering a report with enabled Accessibility to PDF with Skia if the report has a Table containing an HtmlTextBox:
Telerik.ReportDesigner.Net Error: 0 : 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.AttachNodeToTree(AccessibilityPdfElement pdfElementType, PdfOrderedReference taggedObjectReference)
at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.InitTaggedElement(AccessibilityPdfElement pdfElementType)
at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.AddParagraphElement(ITableCell element)
at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.Visit(HtmlTextBox htmlTextBox)
at Telerik.Reporting.Processing.HtmlTextBox.Accept(ProcessingElementVisitor visitor)
at Telerik.Reporting.Processing.ProcessingElementVisitor.Visit(LayoutElement element)
at Telerik.Reporting.Writing.AccessibilityElementWriter.StartWrite(ReportItemBase element, Int32& index)
at Telerik.Reporting.Pdf.PdfAccessibilityElementWriter.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.VisualElementWriter`1.StartWrite(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.WriteStartOperationsDispatcher.Write(IElementWriter writer, LayoutElement element, ElementPageInfo pageInfo, DocumentWriter documentWriter)
at Telerik.Reporting.Writing.WriteOperationsDispatcher.Write(IElementWriter writer, LayoutElement element)
at Telerik.Reporting.Writing.WriteOperationsDispatcher.Visit(HtmlTextBox htmlTextBox)
at Telerik.Reporting.Processing.HtmlTextBox.Accept(ProcessingElementVisitor visitor)
at Telerik.Reporting.Processing.ProcessingElementVisitor.Visit(LayoutElement element)
at Telerik.Reporting.Writing.WriteOperationsDispatcher.DispatchWriteOperation(LayoutElement element, ElementPageInfo pageInfo)
at Telerik.Reporting.Writing.DocumentWriter.Telerik.Reporting.BaseRendering.IWriter.WriteStartElement(LayoutElement element, ElementPageInfo pageInfo)
at Telerik.Reporting.BaseRendering.PageHandler.Telerik.Reporting.Paging.IPageHandler.StartElement(LayoutElement element, ElementPageInfo info)
at Telerik.Reporting.Paging.PageStartElement.OutputToPage(IPageHandler handler)
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()
Telerik.ReportDesigner.Net Error: 0 : An error has occurred while rendering the report: System.OperationCanceledException: The operation was canceled.
at System.Threading.CancellationToken.ThrowOperationCanceledException()
at System.Threading.ManualResetEventSlim.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.SpinThenBlockingWait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.InternalWaitCore(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait(CancellationToken cancellationToken)
at Telerik.Reporting.Paging.PageCompositionBase.SeparateThreadOutputBehavior.Finish()
at Telerik.Reporting.Paging.PageCompositionBase.CreatePages()
at Telerik.Reporting.Paging.PagerBase.Telerik.Reporting.Paging.IPager.CreatePages(IPageHandler handler, LayoutElement root)
at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(LayoutElement root, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback, PageSettings pageSettings)A similar error is thrown when rendering with GDI+.
I am working on a report in the .NET Report Designer that takes time parameters. I am looking for a way to replace the DatePicker that is used in the Report Designer parameters section with the DateTimePicker, but I've been told by support that there is no way to do that.
At a minimum, I need a way to specify which picker (Date, Time or DateTime) that the Designer should use. Being able to specify a format would be helpful also. Ideally the stand alone designer would provide a way to customize and view a custom template that is developed for the HTML5 Report Viewer.
I'm stilling trying to figure out what I have to do, but it appears every time a modify the report I'm not going to be able to view it in the Designer and instead I'm going to have to view it in the Report Viewer in the main application, which will be a much slower and more cumbersome process.