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.
Currently, any custom implementations of the IResourceResolver and ISharedDataSourceResolver require using a parameterless constructor because the types are initialized via Reflection at runtime.
We would like to be able to dependency inject services into the custom resolver implementations through the constructors.
<Telerik.ReportViewer.BlazorNative.ReportViewer
@ref="reportViewer"
ServiceType="ReportViewerServiceType.REST"
PageMode="PageMode.SinglePage"
ServiceUrl="@(ServiceUrl)"
@bind-ReportSource="@ReportSource"
AuthenticationToken="@(AuthToken)"
ScaleMode="(ScaleMode)ReportSetItem.Report.ScaleMode"
@bind-ParametersAreaVisible="@ParametersAreaVisible"
Scale="1.5">
</Telerik.ReportViewer.BlazorNative.ReportViewer>The variable, ParametersAreaVisible, is set to false. The report viewer is still showing the parameters area. I went back to the designer and set all parameters to Visible = false. When I did this, the parameters area is not displayed.
The report viewer should respect what is bound to ParametersAreaVisible.
Using the MySQL Connector/NET data provider with the latest version of Telerik Reporting - Telerik Reporting - Progress® Telerik® Reporting 2024 Q3 (18.2.24.924), leads to the following error when using Stored Procedures:
System.ArgumentException: Object of type 'MySql.Data.MySqlClient.MySqlCommand' cannot be converted to type 'System.Data.SqlClient.SqlCommand'.
at System.RuntimeType.TryChangeType(Object value, Binder binder, CultureInfo culture, Boolean needsSpecialCast)
at System.Reflection.MethodBase.CheckArguments(Object[] parameters, Binder binder, BindingFlags invokeAttr, CultureInfo culture, Signature sig)
at System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Telerik.Reporting.Processing.Data.SqlProviderFactory.DeriveParameters(IDbCommand command)
at Telerik.Reporting.Processing.Data.SqlCommandProvider.ResolveProcedure(IDbCommand command, SqlDataSourceParameterCollection parameters)
at Telerik.Reporting.Processing.Data.SqlQueryProvider.CreateCommandCore(IDbConnection connection, Boolean evaluateParameters)
at Telerik.Reporting.Processing.Data.SqlQueryProvider.CreateCommand(IDbConnection connection)
at Telerik.Reporting.Processing.Data.SqlDataEnumerable.<GetEnumerator>d__2.MoveNext()
at Telerik.Reporting.Processing.Data.LazyList`1.LazyListEnumerator.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Telerik.Reporting.Processing.Data.SeedDataAdapter.Execute(IEnumerable`1 data)
at Telerik.Reporting.Processing.Data.ResultSetAdapter.Execute(IEnumerable`1 data)
at Telerik.Reporting.Processing.Data.MultidimentionalDataProvider.Execute(MultidimensionalQuery query)
at Telerik.Reporting.Processing.DataItemResolveDataAlgorithm.GetDataCore(IDataSource dataSource, MultidimensionalQuery query, IServiceProvider serviceProvider, EvalObject expressionContext, IProcessingContext processingContext)
at Telerik.Reporting.Processing.Report.GetDataCore(IDataSource dataSource, MultidimensionalQuery query)
at Telerik.Reporting.Processing.DataItemResolveDataAlgorithm.ResolveData(String processingId, InMemoryState inMemoryState, MultidimensionalQuery query, Func`1 getDataCore, EvalObject expressionContext)
at Telerik.Reporting.Processing.Report.ResolveData()
at Telerik.Reporting.Processing.Report.ProcessItemCore()
at Telerik.Reporting.Processing.Report.ProcessItem()
at Telerik.Reporting.Processing.ReportItemBase.ProcessElement()
at Telerik.Reporting.Processing.ProcessingElement.Process(IDataMember dataContext)The previous version - Telerik Reporting - Progress® Telerik® Reporting 2024 Q3 (18.2.24.806), is working fine.
If I render a report that includes a HtmlTextBox item with line breaks in its value(<br />) to PDF with the Skia graphics engine and a font such as DejaVu Sans, the <br /> tags are rendered as squares.
Sample HTML:
<p>line1<br />line2<br /><i>line3</i></p>Using a font such as Arial, there are no such issues. However, before 2024 Q4, it wasn't a problem when using the DejaVu Sans font as well.
I have a use case which requires me to record data whenever a report is printed. In pursuit of this, I am trying to replace the build in Print() tool and replace it with my own.
I have read this documentation which shows how to remove and reorder the buttons well enough, but it does not support adding a new tool all-together. Javascript event listeners will not work for me because ultimately what I want to do is accomplish a database write, which would be insecure through javascript.
I have been able to establish a workaround by following this documentation and creating a button *outside* of the ReportViewer, however, I would still like to find a way to put the button inside of the ReportViewer toolbar if possible.
The above image is from testing in HTML5Interactive rendering with Skia on Windows.
I have updated to version 19.2.25.813 of Reporting, and when I try to build a project that has Reporting references, I get the following warnings:
Telerik and Kendo UI Licensing warning TKL102: Your current license has expired and is not valid for Telerik Document Processing Libraries version 2025.2.807.20.
There are no Telerik Document Processing dependencies in my project, but I still get the warning.
If I try to drag & drop fields in the Standalone Report Designer for .NET, it does not allow me to paste the field, and the icon changes, indicating that the action is not allowed.
On the other hand, I can drag & drop the fields as expected when using the Standalone Report Designer for .NET Framework.
This bug has been reintroduced in 2025 Q3: https://feedback.telerik.com/reporting/1671864-2024-q4-pdf-rendering-made-text-extraction-impossible
I use the kendovalidator before rendering the report to check the correct parameter of initial and final date.
However, the validation fails because additional inputs (for the "Send Email" functionality) are included in the HTML output of the viewer even though I have disabled it.
I believe that if the "Send Email" option is disabled the mail data panel should not be created.
I cannot localize the messages of the Angular and React report viewers using the suggested approaches:
- Angular Report Viewer Localization - Telerik Reporting
- Localizing the React Report Viewer - Telerik Reporting
The only alternative is to use the approach from the Localization of the HTML5 ReportViewer Explained - Telerik Reporting article, which I can do only by loading the string resources script in index.html of the SPA.
When adding an embedded image to a coded report in the Standalone Designer .NET, the original RESX file is not modified.
Only the original DESIGNER.CS file is modified. This leads to the new PictureBox being present but empty after deleting the dedicated folder named after the report (beside the designer EXE).
When using screen reader applications like JAWS or Narrator, those tools read accessible reporting PDFs in an incorrect order. For example, if I have two items in the report, the reader will read the second item first.
Additionally, images whose AccessibleDescription I have set may be read multiple times..