Sometimes the following unexpected behavior can be observed with the WinForms report viewer.

Steps to reproduce:

1. Run the WinForms application;

2. Select a value for the parameter and click on Preview.

The window's size is decreased.

For conditional sorting I use a formula like this:

=IIF(Parameters.SortBy.Value = 1, Fields.id,
 IIF(Parameters.SortBy.Value = 2, Fields.name, Fields.value))

This works perfect.

Now I would like to do the same with the sortings direction! Something like:

=IIF(Parameters.SortOrder.Value = NULL, ASC, IIF(Parameters.SortOrder.Value >= 0, ASC, DESC))

Sadly, the Direction-Field/Dropdown does not support formulas.

If the HTML5 Report Viewer gets hidden on renderingBegin(e, args) event and shown on renderingEnd(e, args) event, its toolbar is shown, but the contents are still invisible.

Code snippet that demonstrates the issue:

$("#reportViewer1")
    .telerik_ReportViewer({
		... initialization script goes here
        renderingBegin: function (e, args) {
           $("#reportViewer1").hide();
        },
        renderingEnd: function (e, args) {
           $("#reportViewer1").show();
        }
    });

The built-in MultiSelect ComboBox offers the "autowidth: true" option. So we need the same for the SingleSelect ComboBox.

The popup element for both of these editors is the same. So please add this option because the lack of it is making us create a custom editor only for this reason.

When an HTML content is placed in nested block elements, it is displayed differently from the way the browser displays it.

For example, the following HTML:

<div><p>htmlTextBox1</p></div>

is vertically displaced compared to the same content when not wrapped in another block element:

<p>htmlTextBox1</p>

This image demonstrates the difference.

If there is a pageMode option, An error event is fired at initialization, even if no error occurred.

The problem can be reproduced with the HTML5 demo:

$("#reportViewer1")
                .telerik_ReportViewer({
                    serviceUrl: "api/reports",
                    reportSource: {
                        report: "Telerik.Reporting.Examples.CSharp.ReportCatalog, CSharp.ReportLibrary",
                        parameters: {}
                    },
                    viewMode: telerikReportViewer.ViewModes.INTERACTIVE,
                    pageMode: telerikReportViewer.PageModes.SINGLE_PAGE,
                    scaleMode: telerikReportViewer.ScaleModes.SPECIFIC,
                    scale: 1.0,
                    enableAccessibility: false,
					sendEmail: { enabled: true },
					ready: function () { debugger; },
					error: function (e, args) { debugger; }
                });

Steps to reproduce:

1. Add a ConditionalFormatting to one report item (for example crosstab).

2. Select the first existing rule.

3. Click "Copy Selected Rule"

4.  Click "Paste Rules" - nothing happens.

You can also see the attached video which demonstrates the problem.

Hi there,

Adding an external style sheet to a report in a report-book triggers an error when previewing the report book, "Object reference not set to an instance of an object" 

I've attached the bare minimum project to reproduce the error.

I've also tried upgrading to R3 2020

Cheers

I have a Custom Csv Export class that implements IRenderingExtension. This works fine when the ReportServiceConfiguration.Storage is set to an instance of FileStorage or MsSqlServerStorage.

When using RedisStorage, after clicking on the CSV option from the Html5 Viewer's menu, the browser redirects to a new url to display the following error message:

{"message":"An error has occurred.","exceptionMessage":"Buffer cannot be null.\r\nParameter name: buffer","exceptionType":"System.ArgumentNullException","stackTrace":"   at System.IO.MemoryStream..ctor(Byte[] buffer, Boolean writable)\r\n   at System.IO.MemoryStream..ctor(Byte[] buffer)\r\n   at Telerik.Reporting.Services.WebApi.ReportsControllerBase.GetDocument(String clientID, String instanceID, String documentID) in C:\\DeveloperTooling_Reporting_Agent1\\_work\\17\\s\\Source\\Code\\Telerik.Reporting.Services.WebApi\\ReportsControllerBase.cs:line 305\r\n   at lambda_method(Closure , Object , Object[] )\r\n   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass13.<GetExecutor>b__c(Object instance, Object[] methodParameters)\r\n   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)\r\n   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.<>c__DisplayClass5.<ExecuteAsync>b__4()\r\n   at System.Threading.Tasks.TaskHelpers.RunSynchronously[TResult](Func`1 func, CancellationToken cancellationToken)"}

The debug console in Visual Studio shows this error:

Failed to load resource: the server responded with a status of 500 () [https://localhost:44350/api/reports/clients/9bbda764fa6/instances/722eb62b3a9/documents/969b05177e4f00b24938d1?response-content-disposition=attachment]

Normally table's of context are formatted with roman numerals.  Based on the responses in the forum, only Arabic numbers are allowed.  Request the ability to change the formatting of the rule numbers and restart the page numbering after the TOC.