I am using Telerik report in my c# project using their REST service, I am using the R1 2017 version, the parameters are all loading and their respective data from the database is also loading but I am getting this error when I click on preview,

When I analyzed the Telerik DLL with the error it meant that the parameters values list is null, but it can't be because I checked the network log, all the parameters are being passed to the REST API. This is the payload I'm sending

{"report":"Activity/Registered Users Report.trdp/VisionReport","parameterValues":{"CPR":"353464654","EMAIL":"","MOBILE":"","FromDate":"2023-12-31T00:00:00.000Z","ToDate":"2024-01-01T00:00:00.000Z","ChannelId":["006","002","005"]}}

to this telerik URL :

https://localhost:44302/api/reports/clients/aaf42228070/instances

When I run the same code and report in my local environment it runs properly. Still, when I deploy the code to the server, I receive this error, I ran the report on Telerik Designer on the server, there also it loads fine, it only causes issues when I am loading it in the browser on the server. Following is the complete error I'm receiving from Telerik.

 {message: "An error has occurred.", exceptionMessage: "Value cannot be null. ↵Parameter name: source",…}
    exceptionMessage
    : 
    "Value cannot be null.\r\nParameter name: source"
    exceptionType
    : 

"System.ArgumentNullException"
message
: 
"An error has occurred."
stackTrace
: 
"   at System.Linq.Enumerable.Select[TSource,TResult](IEnumerable`1 source, Func`2 selector)\r\n   
at Telerik.Reporting.Services.Engine.PersistableCollection`1.GetEnumerator()\r\n   
at Telerik.Reporting.Services.Engine.KeyItemPersistableCollection`2.ResolveItem(K referredInstanceKey, Boolean& newItem)\r\n   
at Telerik.Reporting.Services.Engine.ReportEngine.CreateReportInstance(String clientID, String report, Dictionary`2 parameterValues)\r\n   
at Telerik.Reporting.Services.WebApi.ReportsControllerBase.CreateInstance(String clientID, ClientReportSource reportSource)\r\n   
at lambda_method(Closure , Object , Object[] )\r\n   
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass6_1.<GetExecutor>b__3(Object instance, Object[] methodParameters)\r\n  
 at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   
 
 
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   
 at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   
 
 
 
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   
 at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   
 at System.Web.Http.Filters.AuthorizationFilterAttribute.<ExecuteAuthorizationFilterAsyncCore>d__3.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   
 
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n  
 at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__6.MoveNext()

Hi,

We are implementing Telerik Reporting in our ASP.NET hosted Blazor WASM application (using .NET 6).
So far we based our implementation on the following sample: https://github.com/telerik/reporting-samples/tree/master/BlazorViewerAndDesignerExample.

We are looking for a way to pass the User from HttpContext of the ReportsController (for viewer and designer controller) to the WebService datasource, so we can authorize the datasource request based on the user ClaimsPrincipal. The webservice datasource is an api controller that is part of the same ASP.NET project.

Is this possible?

Alternatively, if we could pass a certain cookie from the request to the ReportsController to the webservice datasource request, we could make the authorization work with that.

Kind regards,

Lennert

Hi Team,

I've dabbled with this a little bit, but I've got a parameter in a report that's set to take an array of images. I've inserted a list and set the datasource to the value of the parameter.

The value of this parameter will be something like:

[ "www.images.com/cat.jpg", "www.images.com/dog.jpg", "www.images.com/goldfish.jpg"]

How can I use this structure to assign these values to a Picture Box? I know ReportItem.DataObject exists, but I'm never quite sure how to use it, or if that's even the right approach. Guidance is much appreciated!

Thanks,
J.T.

Hello,

I am having an issue with creating a new style sheet in the web report designer. I would like to use a "StyleSelector" selector type, but when adding a new selector to the style rule, it defaults to "TypeSelector". How do I change this to be a "StyleSelector"?

Thanks,

Dan

Hello.

I need you help please. I make report by Telerik Report Designer. i can make report is normal table but i need merge cell multiple column follow "Case_Problem.png". i need result follow "Nedd_Result.png".

I have Report.trdx in Report.zip, inside report have mock data source.

Hello, I'm using Telerik Reporting R3 2023 to produce reports in PDF format. I use the stand alone report designer to design the report definition and our application uses Telerik Reporting to generate the report. I have a text box with a "Toggle Visibility" Action that works correctly when I preview the report in the stand alone report designer. When I click the "+" button, it toggles the visibility of another text box:

However, when I use our application to generate the report to a PDF or HTML5 format, the "+" button isn't there:

Any help is appreciated

Currently, we use SSRS in our ASP.NET MVC apps to automatically generate tabular, in-memory reports based on RDLC templates against SQL Server data. The PDF produced by SSRS are downloaded to the user's browser. We don't provide any report viewer components on the page. How do you do this using Telerik Reporting?

Also, do you have beginner training videos for Telerik Reporting?

Thank you.

Hi All,

I want to pass few additional parameters from the report designer to the report service each and every request.

Following is my current code.

<script type="text/javascript">
        $(document).ready(function () {

            // For a complete overview over all the options used to initialize Web Report Designer, check:
            // https://docs.telerik.com/reporting/designing-reports/report-designer-tools/web-report-designer/web-report-designer-initialization
        $("#webReportDesigner").telerik_WebReportDesigner({
                toolboxArea: {
                    layout: "list" //Change to "grid" to display the contents of the Components area in a flow grid layout.
            },

            blpermision: {
                isJson: 'Nom'
            },

                serviceUrl: "@(basePath)reportdesigner/",
                report: "",
                skipOnboarding: true,

                // Example of passing parameters to the embedded Report Viewer used when previewing documents.
                // The example below demonstrates the currently available options.
                // reportViewerOptions: {
                //    scaleMode: telerikReportViewer.ScaleModes.SPECIFIC,
                //    scale: 1.0,
                //    templateUrl: "https://bluelotus360.co/ReportsAPI/api/reportdesginer/resources/templates/telerikReportViewerTemplate.html/",
                //    viewMode: telerikReportViewer.ViewModes.INTERACTIVE,
                //    pageMode: telerikReportViewer.PageModes.CONTINUOUS_SCROLL
                //    // Further explanation about how these options effect the Report Viewer can be found at:
                //    // https://docs.telerik.com/reporting/embedding-reports/display-reports-in-applications/web-application/html5-report-viewer/api-reference/report-viewer-initialization
                // }
        }).data("telerik_WebDesigner");
        
        });
</script>

Is there a way to tap each and every request to designer services .

Additionally i cannot over ride certain actions in report designer services. cannot override  SaveResource endpoint. any idea ?

  [Route("api/reportdesigner")]
  public class ReportDesignerController : ReportDesignerControllerBase
  {
      public ReportDesignerController(IReportDesignerServiceConfiguration reportDesignerServiceConfiguration, IReportServiceConfiguration reportServiceConfiguration)
          : base(reportDesignerServiceConfiguration, reportServiceConfiguration)
      {
          var m = reportDesignerServiceConfiguration;
       //  m.DefinitionStorage = new FileDefinitionStorage("~/CSR/");


      }


      public override IActionResult CreateDocument(string clientID, string instanceID, [FromBody] CreateDocumentArgs args)
      {
          return base.CreateDocument(clientID, instanceID, args);
      }

      [HttpPost("definitionresources/save")]
  
      public override Task<IActionResult> SaveResource([FromQuery] SaveResourceModel model)
      {
          return base.SaveResource(model);
      }


  }