StackTrace of the error:

 System.NullReferenceException: Object reference not set to an instance of an object.
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at Telerik.Reporting.Interfaces.LocalizationContext.GetString(String resx, String key)
   at Telerik.Reporting.SRDescriptionAttribute.get_Description()
   at Telerik.Reporting.Expressions.EnumContextManager.GetItem(Type enumType)
   at Telerik.Reporting.Processing.ReportExpressionContext.RegisterAllReportingEnums()
   at Telerik.Reporting.Processing.ReportExpressionContext..ctor(Type reportType, AssemblyRefManager assemblyRefManager)   at Telerik.Reporting.Processing.ReportParametersManager`1.CreateExpressionContext(Report report, IList`1 runtimeParameters, AssemblyRefManager references)
   at Telerik.Reporting.Processing.ReportParametersManager`1..ctor(Report definitionReport, IEnumerable`1 definitionParameters, IDictionary`2 reportSourceParameters, IDataProviderContext dataProviderContext, AssemblyRefManager references)
   at Telerik.Reporting.Processing.DocumentParametersManager`1.CreateManager(Report definition, IDataProviderContext dataProviderContext, IParameterValueParser parameterValueParser, IDictionary`2 rsParameters, AssemblyRefManager references)   at Telerik.Reporting.Processing.DocumentParametersManager`1.CreateManagers(IProcessingContext context, IParameterValueParser parameterValueParser)
   at Telerik.Reporting.Processing.DocumentParametersManager`1..ctor(ResolvedReportDocument resolvedReports, IProcessingContext processingContext, IParameterValueParser parameterValueParser)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReportSource(ReportSource reportSource, IRenderingContext context)
   --- End of inner exception stack trace ---
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReportSource(ReportSource reportSource, IRenderingContext context)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReportSource(ReportSource reportSource, Hashtable deviceInfo, IRenderingContext context)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessAndRender(String format, ReportSource reportSource, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessAndRenderStateless(String format, ReportSource reportSource, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback)
   at Telerik.Reporting.Processing.ReportProcessor.RenderReport(String format, ReportSource reportSource, Hashtable deviceInfo, CreateStream createStreamCallback, String& documentName)

It would be extremely useful to have a Crosstab export the entire hierarchy as groups in Excel. SQL Reporting Services does this when exporting a report created there. I realize that this would mean generating the entire dataset prior to the export in order to expand all the data, but as I said, SSRS does this without a noticeable performance delay.

I am using the standalone report designer with an ObjectDataSource that returns ExpandoObject. I did create some new ExpandoObject objects and set property values as suggested in https://www.telerik.com/support/kb/reporting/details/how-to-use-objectdatasource-with-expandoobject. The problem I have that the dynamic properties of ExpandoObject are now showing in the data explorer.

If during the report rendering stage, one or more of the required entities in the File storage were removed/deleted by third-party software, it will prevent the report from finishing the rendering and throws a NullRefereceException:

Hi,

There is an issue where the search window that opens from the Report Viewer tool bar does not allow for deleting text from the search string input box using backspace.

The keyboard command provider seems to have many other keys covered for the intended behavior, but backspace does not seem to be handled appropriately.

Telerik saving to PDF issue intermittently.  The issue is that the graph gets skewed and then won’t open in Acrobat once the report is exported.

Go to page https://demos.telerik.com/reporting/product-catalog?&skinName=default

Open search dialog.

Try to move search dialog pressing left mouse button on search dialog title.

Incorrect behavior: search dialog disappears and appears again only when you finish pressing left mouse button.

I put a ReportViewer in an application and VisualStudio inserted the required MergedDictionaries.  I updated them to the Green theme and added the Green reference, now I get a XAML error stating Cannot find resource named 'RepeatButtonStyle.'  I comment out this line in my App.xaml file:

<!--<ResourceDictionary Source="/Telerik.ReportViewer.Wpf.Themes;component/Themes/Green/Telerik.Windows.Controls.Navigation.xaml" />-->

the error goes away and my XAML designer works again, but the navigation section of the report viewer has the incorrect theme applied.

I looked in the copy of the file that is on my computer located at:

   C:\Program Files (x86)\Progress\Telerik Reporting R2 2019\Wpf\Themes\Green\Telerik.Windows.Controls.Navigation.xaml

On line 8831 there is a reference to a Static Resource named RepeatButtonStyle.

<Style x:Key="TabbedWindowScrollButtonStyle" TargetType="RepeatButton" BasedOn="{StaticResource RepeatButtonStyle}">

I assume this the culprit?

There was a similar issue in February.

https://feedback.telerik.com/wpf/1384801-pdfviewer-cannot-find-resource-named-repeatbuttonstyle-design-time-exception-in-fluent-theme-noxaml

Go to page https://demos.telerik.com/reporting/product-catalog?&skinName=default

Open Search dialog.

Type "Accessories" in search field. Wait for results.

Pick last result (Accessories - page 2) from results list. (page 2 will be opened - correct)

Close search dialog and open it again (or just clear search field).

Type "Accessories" in search field again. Wait for results.

Pick last result (Accessories - page 2) from results list again.

Incorrect behavior: page 1 will be opened instead of page 2; and first result item will be highlighted as selected instead of last result item.

Also I met situation when long results list was scrolled up to top but it was unclear how to reproduce it stable.

When dynamically create a new tab which contains a report viewer, only the first report is rendered correctly. The subsequent tabs with report viewers are empty.

Using the following code for updating the ReportSource of the viewer:

ngOnInit() {
  this.setParameters();
}

setParameters(): void {
  this.reportViewer.setReportSource({
    report: 'SampleReport.trdp',
    parameters: {}
  });
}

comes up with the error 

Argument of type '{ report: string; }' is not assignable to parameter of type 'JSON'.
  Type '{ report: string; }' is missing the following properties from type 'JSON': parse, stringify, [Symbol.toStringTag]

Currently, the workaround is to cast the reportSource object as follows: