Planned
Last Updated: 27 Jun 2025 14:46 by ADMIN
Scheduled for 2025 Q3 (Aug)

### Bug report

When the TreeList is set up for Popup editing, the "required" validation triggers immediately when the Popup form is opened.

### Reproduction of the problem

1) Create a Popup editable TreeList.

2) Add the DataAnnotation [Required] attribute to any of the Model properties.

3) Click the built-in "Add new record" command.

4) The editor of the required field is automatically focused and the validation triggers immediately.

The behavior can be observed in the TreeList Popup Editing demo: https://demos.telerik.com/aspnet-core/treelist/editing-popup

### Expected/desired behavior

The validation must trigger on blur, as in the jQuery demo.

### Environment

* **Telerik UI for ASP.NET Core version: 2025.2.520
* **Browser: [all]

Planned
Last Updated: 26 Jun 2025 15:16 by ADMIN
Scheduled for 2025 Q3 (Aug)

Hi,

I'm following this document to load data into the grid view control using local data binding.

https://demos.telerik.com/aspnet-core/grid/local-data-binding 

I'm not sure this is an issue or expected grid view behavior when using local data binding. If loader-type and no-records are added. What happens is when there are no records, the Skeleton is still displayed and the no-records template is not displayed (see the attached image)


<kendo-grid mobile="Disabled" name="Grid" loader-type="GridLoaderType.Skeleton">
 <columns>
 <column field="ProductName" title="Product Name">
 </column>
 <column field="UnitPrice" format="{0:C}" title="Unit Price" width="130">
 </column>
 <column field="UnitsInStock" title="Units In Stock" width="130">
 </column>
 <column field="Discontinued" title="Discontinued" width="130">
 </column>
 </columns>
 <datasource type="DataSourceTagHelperType.Ajax" page-size="20" server-operation="false" data="@Model">
 </datasource>
 <filterable enabled="true">
 </filterable>
 <scrollable enabled="true" />
 <pageable enabled="true">
 </pageable>
 <sortable enabled="true" />
<no-records template="string HTML template, automatically centered" />
</kendo-grid>

 

Thanks

Bob

Planned
Last Updated: 11 Jun 2025 13:02 by ADMIN
Scheduled for 2025 Q4 (Nov)
Created by: Janick
Comments: 2
Category: UI for ASP.NET Core
Type: Feature Request
5

Consider the use of TextWriter async methods for the HTML Helpers, for example the WriteInitializationScript methods.  In certain scenarios the use of the synchronous methods causes an exception: System.InvalidOperationException: Synchronous operations are disallowed. Call WriteAsync or set AllowSynchronousIO to true instead.

This can be resolved by explicitly enabling synchronous operations

services.Configure<IISServerOptions>(options =>
    {
        options.AllowSynchronousIO = true;
    });

though synchronous operations have been disabled by default at framework level as of .NET 3.0.

Planned
Last Updated: 05 Jun 2025 12:32 by ADMIN
Scheduled for 2025 Q3 (Aug)

### Bug report

When dragging and dropping a file into a specified FileManager folder, the Upload request triggers twice.

### Reproduction of the problem

1. Open the FileManager Demo: https://demos.telerik.com/kendo-ui/filemanager/index

2. Open the browser's Network tab.

3. Drag and drop a file into the FileManager.

4. Two Upload requests are triggered one after another.


### Expected/desired behavior

When uploading a single file with drag & drop, a single Upload request must trigger. When using the default upload button to upload a file, a single request triggers as expected.

### Environment

* **Kendo UI version: 2024.4.1112
* **jQuery version: 3.7.1
* **Browser: [all]

Planned
Last Updated: 30 May 2025 11:18 by ADMIN
Scheduled for 2025 Q3 (Aug)
Created by: Alistair
Comments: 0
Category: Wizard
Type: Feature Request
3

Currently, the Content function for Steps in a Wizard only accepts a string value (see API here). 
This means that in order to add a partial view (bound to the current model and its properties), the most straightforward way I could find was to put the partial view (and any wrappers) in its own file and add an extension method "ToHtmlString()". For example:

@model MyModel

@(Html.Kendo().Wizard().Steps(step => {

step.Add().Content(Html.Partial("~/Path/To/View/Wrapper.cshtml", Model).ToHtmlString());

})

using Microsoft.AspNetCore.Html;
using System.IO;

public static class HtmlContentExtensions
{
    public static string ToHtmlString(this IHtmlContent htmlContent)
    {
        if (htmlContent is HtmlString htmlString)
        {
            return htmlString.Value;
        }

        using StringWriter writer = new();
        htmlContent.WriteTo(writer, System.Text.Encodings.Web.HtmlEncoder.Default);
        return writer.ToString();
    }
}
This is not ideal, as it requires the usage of Html.Partial (which displays a warning in the latest versions of .NET 8). It is also awkward as it sometimes means that new view files need to be created for the explicit purpose of being a "wrapper" even though they do not contain much content. And lastly, it also requires an extension method, so it's not immediately easy for other Telerik users to use.

In the Telerik TabStrip, a better approach is possible, as the Content for Items can take in a function which accepts Razor syntax (see API here). For instance:

@model MyModel @(Html.Kendo().TabStrip().Items(tabstrip => { tabstrip.Add()

.Content(@<div id="@Model.TabContainer" class="myTabWrapperClass">

@await Html.PartialAsync("~/Path/To/View.cshtml", Model)

</div>); })

In this case, we can use Html.PartialAsync (avoiding .NET 8 warnings), we don't need an extension method, and it is easy to add any required "wrapping" such as a div with an ID, without needing a whole separate view.

If we had the option to use the same approach with Wizard Steps, that would be ideal!

Planned
Last Updated: 07 Jun 2024 15:18 by ADMIN
Hi, I have the following option in Visual Studio 2022 setup to use Global F7 keypress to toggle razor page view between html & code pages.  After an update with the Progress Telerik UI VS Extensions this keypress no longer worked and seemed to be ignored.

Disabling the Progress Telerik UI VS Extension enables the keypress to function again, disabling it blocks the keypress.

Interestingly I have Global CTRL+F7 setup to toggle in web form pages and this works ok with the extensions enabled.