Hello Supports,

I want to try and install Nuget packages Telerik.Reporting.Services.AspNetCore for my Asp.net Core project but it isn't found.

when I go to the option "Manage Nuget packages", these are no available the packages to download (see the attached file).
Is it missing from the private nuget feed ?

Thank You.

Hello Telerik Reporting Community,

We have released a new version of Telerik Reporting today, 2024 Q1 (18.0.24.130). Please update your existing installation at your earliest convenience.

You can review the Legacy Installer Vulnerability - Telerik Reporting article to learn more details about why we are recommending customers to update.

To get the new version, take the following steps:

1. Go to Downloads | Your Account. 
2. Select Telerik Reporting.
3. Download the msi installer file, run it, and follow the steps to completion.

Notes

As the KB article explains, the issue pertained only to the old installer component, and not Telerik Reporting contained within the installation package. It does not affect any applications you’re using Telerik Reporting with.

If you have a rare situation where you cannot update the PC installed version, there are various ways to keep a project using an older version of reporting even though the PC has a newer version installed.

• NuGet Option: Update your projects to use the Telerik Reporting NuGet packages, instead of local DLLs (see https://docs.telerik.com/reporting/getting-started/installation/installation-approaches#using-nuget-packages).

• Copied Assemblies Option: Copy the older version’s DLLs to the project directory, then update the project references to use the copied assemblies (instead of the assemblies in C:/Program files (x86)/Progress/Telerik Reporting [older version]/)

We highly recommend you open a Technical Support Ticket if you have a complex situation and would like to ask questions before updating the PC’s installed version. You can open a Support Ticket here => https://prgress.co/DevToolsSupport.

The Native Blazor Report Viewer uses Blazor Multiselect by default for multiselect parameters. This becomes very cluttered when many items are selected.

I want to display parameters in a multi-select dropdown list with check boxes, exactly like this: https://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/checkboxes/defaultcs.aspx

The equivalent Blazor demo is more cluttered as selections showing in the select box: https://www.telerik.com/blazor-ui/documentation/knowledge-base/multiselect-checkbox-in-dropdown 

The article here https://docs.telerik.com/reporting/embedding-reports/display-reports-in-applications/web-application/native-blazor-report-viewer/customizing/how-to-create-custom-parameter-editors has an example on how to customize the parameter widget in Native Blazor Report Viewer.

Can anyone here share the code to create a nice clean multi-select dropdown list with check boxes for a parameter in the Native Blazor Report Viewer? 

We just updated Telerik Reporting to 19.1.25.521.

Our application uses WPF but because of historical reasons, we use the WinForms ReportViewer hosted in a WindowsFormsHost control.

Since the latest update (coming from Telerik Reporting Q1 2025), we get a NullReferenceException when the ReportViewer is about to display the report after loading it.

System.NullReferenceException
  HResult=0x80004003
  Message=Object reference not set to an instance of an object.
  Source=Telerik.ReportViewer.WinForms
  StackTrace:
   at Telerik.ReportViewer.WinForms.Licensing.UiLicensePresenter.ShowWatermark(Action showWatermarkCallback)

It seems to have something to do with Licensing? We have manually placed the [assembly: global::Telerik.Licensing.EvidenceAttribute... declarations for Telerik UI for WPF and Telerik Reporting in the project, as it is instructed in your documentation. The regular Telerik WPF controls work fine in our application.

I'm trying to generate a report in my Blazor application.

What I’ve done so far:

• I used the Standalone Report Designer to create a sample report based on JSON data.
• I saved the report as a .trdp file and embedded it into my Blazor project.
• Using the Telerik Report Viewer, I was able to display the report successfully in the app.

Now here's what I want to do:

• I have dynamic JSON data generated within my Blazor application at runtime.
• I want to use this runtime JSON data to populate the existing .trdp report.

Currently we're using a pictureBox as a Watermark, but this only shows on the first page of the record.

We also created a binding to show/hide the image.

When using a real Watermark it is correctly displayed on every page, but we cannot add a binding to conditionally show/hide it.

How can we implement a Watermark that both is displayed on every page, but also is only shown on a specific condition?

Kind regards.

I created a report using the Standalone Designer (in .trdp format). In the data connection, I configured it to use a shared connection. From within the Designer, everything works fine — I can preview and export to PDF without any issues.

I then created a console project (code shown below) to try exporting the report to PDF.

In the project's configuration file, I added a connection string to use.

However, when executing the following line:

RenderingResult result = reportProcessor.RenderReport("PDF", sourceReportSource, deviceInfo);

I get an error in the Inner Exception:
Keyword not supported: 'host'.

My PostgreSQL connection string is:
"Host=localhost;Port=5432;Database=crp;Username=postgres;Password=****"

But the connection string is correct — it’s exactly the same one I use in the Standalone Designer, where it works without any problem.

If I embed the connection string directly in the report instead of using a shared connection, everything works fine.

Any idea what could be causing this?

        static void Main(string[] args)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);

            IConfiguration config = builder.Build();

            string connectionString = config.GetConnectionString("crp");

            string reportName = @"D:\dev\telerik-reporting\reports\report.trdp";

            var reportProcessor = new Telerik.Reporting.Processing.ReportProcessor();

            // set any deviceInfo settings if necessary
            var deviceInfo = new System.Collections.Hashtable();
            var sourceReportSource = new Telerik.Reporting.UriReportSource();
            sourceReportSource.Uri = reportName;
          
            sourceReportSource.Parameters.Add("procedure_id", 6);

            RenderingResult result = reportProcessor.RenderReport("PDF", sourceReportSource, deviceInfo);

            if (!result.HasErrors)
            {
                //string fileName = result.DocumentName + "." + result.Extension;
                string fileName = "file.pdf";
                string path = @"D:\";
                //string path = System.IO.Path.GetTempPath();
                string filePath = System.IO.Path.Combine(path, fileName);

                using (System.IO.FileStream fs = new System.IO.FileStream(filePath, System.IO.FileMode.Create))
                {
                    fs.Write(result.DocumentBytes, 0, result.DocumentBytes.Length);
                }
            }

        }

Hi All : 

I am working with Crystal Report to Telerik Report conversion. After I have generated a target trdp file, I found that the parameters in crystal report is not installed to the target report.

I have to manually install the parameters back to the

Here is the original Crystal Report with a parameter. 

The target report :  (No parameter can be found in Report Explorer, I have to install the parameter to make the start the preview(

My Question is : Do I have to manually install the parameter to the target Telerik report after running the conversion tools? 

Thank you in advance.

I'm having issues with hiding or disabling the Search button on the Report Viewer. 

I found the attribute here for the Search Dialog:

https://docs.telerik.com/reporting/embedding-reports/display-reports-in-applications/web-application/html5-report-viewer/api-reference/data-attributes

I found this link on how to disable a button in the Viewer:

https://docs.telerik.com/reporting/knowledge-base/hide-or-change-html5-report-viewer-toolbar-buttons

But when I try it, the Search button continues to be active.

This is the code I have below. I would also point out that the reason I am trying to hide the Search is because when I do try to a search, I get a bunch of gobbly-gook that appears in the results. See attached. I'm not sure what that is all about. So I am willing to keep the Search button active as an alternative if there is a way to return clean results.

    <script type="text/javascript">

Problem's Summary : 

Section Formula information lost after Crystal report to Telerik report conversion

What has been done :

I have converted a Crystal report having multiple sections , each section has its own background color controlled by Formula :Also I have used formula to control data formatting (color) in the original Crystal Report.

After I have used the convert it to Telerik Report.

I found that the formula is missing in the converted Telerik Report, there is no any coloring effect in new report. 

My Question is : does the Telerik Crystal Report Converison tools support Formula conversion ?

Thank you