Questions on UI for ASP.NET Core Forum

5 answers

510 views

Telerik UI for ASP.NET Core versioning feedback

We need your feedback, because we are considering changes in the release approach for Telerik UI for ASP.NET Core. Please provide your feedback in the comments section below:

1. Is it hard to understand the version numbers of our releases? If yes, what makes them hard to understand them?

2. Would semantic versioning (SemVer) of our releases make it easier to understand our version numbers and what's behind them?

3. If we go with SemVer, we might need to start with version 3000.0.0 as we currently use 2022.x.x. Please share your thoughts about this approach and ideas for what number versioning would work best for you.

General Discussions

answered on 05 Feb 2024

1 answer

110 views

License Key Question

I have some quick questions around the new license key requirements for the UI for ASP.NET MVC, UI for ASP.NET Core and Reporting modules.

I understand from the FAQ that each licensed developer will have their own separate license key. We build the project on a separate build server, and package it into an installer, and then customers who self host run our installer to deploy the application. Is there a license key that needs to be part of the deployment package, and if so, what key is that, when does it expire, and what happens when it expires?

What I want to ensure 100% is that we don't have a situation where a customer *has* to deploy or upgrade their version of our software, even if we ever discontinue our subscription. I'm fine with developers needing to update license keys on development environments, and I'm fine with customer production environments needing a new license key *if* they are deploying a new version of our software that includes an updated version of Telerik. But it is not OK for my use case if there's a situation where customer production environments that are on an old version of our software with no plans to upgrade will stop working or show watermarks and require an update to fix.

I appreciate any clarification around this topic, or a shove in the right direction to any documentation that makes this clear.

General Discussions

answered on 06 May 2025

0 answers

42 views

Loader Components as a Loading/Processing Container

How do use the Loader as a Loading Container so it covers the whole UI with a transparent overlay

@(Html.Kendo().Loader()
    .Name("loader")
    .Size(LoaderSize.Large)
    .Type(LoaderType.ConvergingSpinner)
    )

General Discussions

Loader

updated question on 28 Mar 2025

1 answer

76 views

Telerik UI for ASP.NET Core 2025.1.227 Will Work under .Net 6.0 Application

We are currently using telerik.ui.for.aspnet.core.2020.1.406 where the application is using .Net 6.0, we are planning to upgrade to latest supported version of Telerik UI for ASP.NET Core for that application. Will latest Telerik UI for ASP.NET Core 2025.1.227 work with no isseus under .Net 6.0 Application

General Discussions

answered on 27 Mar 2025

2 answers

48 views

Image carousel for asp.net core?

Hello,

I can't seem to find a component for asp.net core that will just rotate images on a home page for example. Am I missing something? What component will do this?

Thanks

General Discussions

answered on 05 Mar 2025

0 answers

49 views

Telerik UI for ASP.NET Core packages not available in trial

Closed

General Discussions

updated question on 27 Sep 2024

1 answer

73 views

HTML5 Viewer With Custom Parameter Editors using ASP.NET Core 8 Not Displaying

I was tasked at my company with implementing custom parameter editors in order to dynamically hide parameter depending on whether they should be available for use or not. I first followed this tutorial to create the custom parameter editors and the corresponding HTML5 Widget. Once I did that, I tried integrating the custom parameter edtiors into a HMTL5 Report Viewer using the ASP.NET Core 8 tutorial (links here, here, here) but after building both the REST service project and the HTML5 viewer, whenever I run the app, I simply land on a blank localhost page leading to Microsoft Tutorials on building NET Core apps. I have tried all available troubleshooting & looked at documentation but I have no idea how to move forward. I have double checked that I followed the tutorials correctly and still no progress. I am using Telerik Report Desginer R3 2020, Visual Studio 2022, .Net 8. Attached below is the code for the program.cs, appsettings.json, reportscontroller.cs, and index.html

AppSettings.json (Rest Project)

{
    "Logging": {
        "LogLevel": {
            "Default": "Information",
            "Microsoft.AspNetCore": "Warning"
        }
    },
    "AllowedHosts": "*",
    "ConnectionStrings": {
        "Telerik.Reporting.Examples.CSharp.Properties.Settings.TelerikConnectionString": "Data Source =.\\SQLEXPRESS; Initial Catalog=AdventureWorks; Intgrated Security = true"
    }
    
}

namespace TopLevelStatements.Controllers
{
    using System.Net;
    using System.Net.Mail;
    using Microsoft.AspNetCore.Mvc;
    using Telerik.Reporting.Services;
    using Telerik.Reporting.Services.AspNetCore;

    [Route("api/[controller]")]
    [ApiController]
    public class ReportsController : ReportsControllerBase
    {
        public ReportsController(IReportServiceConfiguration reportServiceConfiguration)
        : base(reportServiceConfiguration)
        {
        }

        protected override HttpStatusCode SendMailMessage(MailMessage mailMessage)
        {
            throw new System.NotImplementedException("This method should be implemented in order to send mail messages");

            // using (var smtpClient = new SmtpClient("smtp01.mycompany.com", 25))
            // {
            //     smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
            //     smtpClient.EnableSsl = false;
            //     smtpClient.Send(mailMessage);
            // }
            // return HttpStatusCode.OK;
        }
    }
}

using Microsoft.Extensions.DependencyInjection.Extensions;
using Telerik.Reporting.Services;
using Telerik.Reporting.Cache.File;


var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddControllers().AddNewtonsoftJson();

// Configure dependencies for ReportsController.
builder.Services.TryAddSingleton<IReportServiceConfiguration>(sp =>
    new ReportServiceConfiguration
    {
        // The default ReportingEngineConfiguration will be initialized from appsettings.json or appsettings.{EnvironmentName}.json:
        ReportingEngineConfiguration = sp.GetService<IConfiguration>(),
        // In case the ReportingEngineConfiguration needs to be loaded from a specific configuration file, use the approach below:
        //ReportingEngineConfiguration = ResolveSpecificReportingConfiguration(sp.GetService<IWebHostEnvironment>()),
        HostAppId = "ReportingNet6",
        Storage = new FileStorage(),
        ReportSourceResolver = new UriReportSourceResolver(System.IO.Path.Combine(sp.GetService<IWebHostEnvironment>().ContentRootPath, "Reports"))
    });

builder.Services.AddCors(corsOption => corsOption.AddPolicy(
    "ReportingRestPolicy",
    corsBuilder =>
    {
        corsBuilder.AllowAnyOrigin()
            .AllowAnyMethod()
            .AllowAnyHeader();
    }
));


var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

app.UseEndpoints(endpoints =>
{
    endpoints.MapRazorPages();
    endpoints.MapControllers();
    //...
});

app.UseStaticFiles();

app.UseAuthorization();

app.MapRazorPages();

app.UseCors("ReportingRestPolicy");

app.Run();

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Telerik HTML5 Report Viewer Demo in ASP.NET Core in .NET 5</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale-1, maximum-scale=1" />
    <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
    <link href="https://kendo.cdn.telerik.com/2020.3.1118/styles/kendo.common.min.css" rel="stylesheet" />
    <link href="https://kendo.cdn.telerik.com/2020.3.1118/styles/kendo.blueopal.min.css" rel="stylesheet" />
    <script src="https://localhost:44320/api/reports/resources/is/telerikReportViewer"></script>
    <style>
        #reportViewer1 {
            position: absolute;
            left: 5px;
            right: 5px;
            top: 50px;
            bottom: 5px;
            overflow: hidden;
            font-family: verdana, Arial;
    </style>
</head>
<body>
    <div id="reportViewer1">
        loading...
    </div>
    <script>
        $(document).ready(function () {
            $("#reportViewer1")
                .telerik_ReportViewer({
                    serviceurl: "https://localhost:44320/api/reports/", reportSource: {
                    },
                    report: "Barcodes Report.trdp", parameters: {}
viewMode: telerikReportViewer.ViewModes.INTERACTIVE, scaleMode: telerikReportViewer.ScaleModes.SPECIFIC, scale: 1.0,
                    enableAccessibility: false,
                    sendEmail: enabled: true }
});
});</script>
</body>
</html>

General Discussions

VS Code Extension

answered on 21 Aug 2024

1 answer

177 views

Deferred Initialization

I added a content security policy and wanted to remove unsafe-inline so I'm deferring components globally.

@Html.Kendo().DeferredScripts()

The problem is that I have other JavaScript code which references components in the jQuery document ready function which now don't work. I think it's because the components haven't been initialized yet.

When deferring components globally how do you execute JavaScript code after the components have been initialized?

Thank you

General Discussions

Security

answered on 16 Aug 2024

1 answer

136 views

CS0012 error trying to run or compile a project

Hi,

I'm developing an ASP.NET Core MVC app targeting .NET 8 with VS2022 on a x64 Windows 10 Professional.

The app has one grid using a custom popup editing template with some editing Kendo widgets in it.
I've found that, if I omit to call ".Deferred()" on the Grid or ".ToClientTemplate()" on every widgets inside the custom template, I got the following error trying to run or compile my app from Visual Studio:

Error CS0012 The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'

The very same happens if I try to run or compile the example project found in the UI for ASP.NET Core MSI installer package!

I'm using a trial version of Telerik.UI.for.AspNet.Core 2024.2.514.

Can you help me, please?

General Discussions

answered on 29 Jul 2024

0 answers

108 views

Kendo is not defined in Mvc Area

I am working on a Net Core Mvc application for which I succesfully used Telerik UI. Everything was working fine, but after I added Mvc Areas and moved the views and controllers etc, the Telerik components stopped working.

I have found similar problems searching Google and the Telerik forum. For example:
https://www.telerik.com/forums/cannot-use-kendo-within-areas

However, that solution it not for ASP.NET Core. I was wondering what I have to do to make sure Telerik will work again in my Mvc Areas.

I am using the CDN to include the Kendo files.

<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2023.3.1114/js/kendo.all.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2023.3.1114/js/kendo.aspnetmvc.min.js"></script>
<script src="~/js/kendo-ui-license.js"></script>

<script src="~/vendor/kendo/kendo.culture.nl-NL.min.js"></script>
<script src="~/vendor/kendo/kendo.messages.nl-NL.min.js"></script>
<script type="text/javascript">
    kendo.culture("nl-NL");
</script>

Any help is appreciated.

General Discussions

updated question on 19 Mar 2024