After upgrading Telerik Reports from version 14.2.20.1021 to 17.0.23.118 we experience Visual Studio crashes when opening the "Expression..." 

editor after the first time.

Steps to reproduce:

* Open the report.

* Open the "Expression....". Loads correctly (as above)

* Close the report

* Reopen the same report

* Open the "Expression....". Visual Studio Crashes while showing the editor and shows the following:

Event Viewer shows the following:

OS and Visual Studio Versions

Microsoft Visual Studio Professional 2019 Version 16.11.27

OS : Windows 11 

Please advice on how to proceed.

Thanks in advance.

I want to pass parameters tho the report using  Blazor native viewer. I found some samples with HTML viewer but the code doesn't work for the native viewer. Do you have a sample of how to implement it?

I try implementing a custom resolver but until now it is not working.

Hi:

In blazor I have a list of dtos, I want to assing it to a report similar to the process in wpf. How can i Accomplish it? is posible?

I Try with a custom resolver in the server side, but I have to send the thada from the balzor layer to the custom resolver and im not sure if is a good idea.

Thanks in advance.

HI,
I have a problem with Telerik Web Report Designer (17.0.23.515) as explained in the documentation I proceeded to create api service controller and the view to host the application but when I run it I get an error poup with the following message :

Could not retrieve information for folder . Warning, model validation error detected!

Do you have any suggestions/info to solve the problem?

P.S: I've verified that the app can read and write to the report folder.

Thank You

Good afternoon, 

I'm trying to generate a barcode with GS and RS characters inside a barcode with no success (those are mandatory for GTL labels in VDA standard).

I've been trying to do Char(29), Chr(29), ChrW(29), (char)29, Convert.ToChar(29), ... but nothing worked me.

Best regards

Hello,

I am getting the following error when trying to print a report from my website:

But when in my local machine, it displays correctly. The database is the same, no changes between then.

Regards,

Alexandre

My report viewer was working without issue for some time until caching with DistributedSqlServerCache was implemented. It is configured as follows.

services.TryAddSingleton<IReportServiceConfiguration>(configuration =>
    new ReportServiceConfiguration {
        HostAppId = "Reports",
        ReportingEngineConfiguration = new ConfigurationBuilder().AddJsonFile(Path.Combine(configuration.GetService<IWebHostEnvironment>().ContentRootPath, "appsettings.json"), true).Build(),
        ReportSourceResolver = new UriReportSourceResolver(Path.Combine(configuration.GetService<IWebHostEnvironment>().ContentRootPath, "App_Data")).AddFallbackResolver(new TypeReportSourceResolver()),
        Storage = new MsSqlServerStorage("connection-string")
    }
);

public class ReportsController : ReportsControllerBase {
    public ReportsController(IReportServiceConfiguration reportServiceConfiguration) : base(reportServiceConfiguration) {
        reportServiceConfiguration.Storage.AcquireLock(string.Format("Lock-{0}", new Random().Next()));
    }
}

Note that the AcquireLock() method mentioned above was added in response to this comment from Telerik:

The interface also exposes a method called AcquireLock which is used from the service to enforce serialized access to all stored resources from each thread of the application and between the instances of the application in case of multi-instance environment (i.e., Web Farm)

Which I suspect may apply here, but unfortunately I can only hazard guess in light of its appalling lack of documentation.

A typical error message reported by the viewer is:

Error creating report document (Report = 'XXXXX, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'; Format = 'HTML5'). An error has occurred. Object reference not set to an instance of an object.

function registerDocumentAsync(format, deviceInfo, useCache, baseDocumentId, actionId) {
    throwIfNotInitialized();
    throwIfNoReportInstance();

    return client.createReportDocument(clientId, reportInstanceId, format, deviceInfo, useCache, baseDocumentId, actionId).catch(function(xhrErrorData) {
        handleRequestError(xhrErrorData, utils.stringFormat(sr.errorCreatingReportDocument, [ utils.escapeHtml(report), utils.escapeHtml(format) ]));
    });
}

to this:

function registerDocumentAsync(format, deviceInfo, useCache, baseDocumentId, actionId) {
    throwIfNotInitialized();
    throwIfNoReportInstance();

    return client.createReportDocument(clientId, reportInstanceId, format, deviceInfo, useCache, baseDocumentId, actionId).catch(function () {
        console.log("Failed to create report document. A retry has been attempted.");

        return client.createReportDocument(clientId, reportInstanceId, format, deviceInfo, useCache, baseDocumentId, actionId).catch(function (xhrErrorData) {
            handleRequestError(xhrErrorData, utils.stringFormat(sr.errorCreatingReportDocument, [utils.escapeHtml(report), utils.escapeHtml(format)]));
        });
    });
}

Hello,

I have a report wich has one parameter. When I try to pass a new value in javascript it does not accept it, and uses the sample parameter that is inside the report.

Parameter in the Report:

Passing Parameter in Javascript:

Where 'noFichaVistoria' is the variable containing the new parameter value.

Has anyone faced this before?

Alexandre

Hi i'm davide, in these days i'm working for a project that requires telerik on windows form c# desktop application.        So i'm trying to figure out what i need to do it but i don't find pretty much anything online, i can't find a solution please help me.

My little exercise consist in asking a year of school (1 to 5) to print only the ones students in that year, cvyear is a int from 0 to 5, I'M ITALIAN SO 1) ANNO = YEAR, classes is a type class, stu is a list of student. CODE:

This is my scenerio.
i have report in xml stored in database, report has subreports as uri            
<UriReportSource Uri="sub_report1.trdx">

i have rest api service that consume xml , render it as pdf and returns it as byte[].
And everything works fine but my custom resolver dosnt fire.

It seems to be that when I DO NOT use telerik_ReportViewer,  resolve event doesnt invoke, am i right? My rest api service does not even inherits from Telerik ReportsControllerBase

my desire is when i call renderReport customResolver is invoked, i download xml for subreport (based on uri trdx) and i put them together with main report and return "As complete"

Can i configure it to achieve what i want ?

my server side code

//xDoc represents report in xml

using var tr = new StringReader(xDoc.Root.ToString());
var xmlSerializer = new Telerik.Reporting.XmlSerialization.ReportXmlSerializer();
var report = (Telerik.Reporting.Report)xmlSerializer.Deserialize(tr);

ReportProcessor reportProcessor = new ReportProcessor();
Telerik.Reporting.InstanceReportSource instanceReportSource = new Telerik.Reporting.InstanceReportSource();
instanceReportSource.ReportDocument = report;

RenderingResult result = reportProcessor.RenderReport("PDF", instanceReportSource, null);

return result.DocumentBytes;