5 answers

392 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

397 views

URGENT: ListView completely broken v2023.1.314

Hi!

The ListView is breaking my web application, and I cannot make head or tail of the reason:

An unhandled exception occurred while processing the request.

NotSupportedException: "ClientTemplateId or ClientTemplateHandler" cannot be null or empty.

Kendo.Mvc.UI.ListView<T>.VerifySettings()

Also, you demos for the ListView are broken and the browser tab crashed after a while.

I need an urgent fix, as this is affecting the live application.

ListView

answered on 17 Mar 2023

0 answers

467 views

Grid Column Menu Unstick Message is Null

In our UI for ASP.NET Core R3 2020 (2020.3.915) release, the Column menu message of unsticking a column is "null".

This bug will be resolved in our next official release.

In the meantime, as a workaround, manually set the Unstick Column menu message:

.ColumnMenu(c => c.Messages(m => m.Unstick("Unstick Column")))

Grid

asked on 16 Sep 2020

0 answers

4 views

Grid Template Column and Strict CSP

I have a grid with the following template columns:

columns.Template("<input type='checkbox' />");
columns.Template("<input type='hidden' value='#=Ssid#' />");

Html.Kendo().Template().AddHtml() cannot be used because it does not return a string.

How can I rewrite the code to be compatible with a strict content security policy (e.g. without using unsafe-inline)?

Thank you

Grid

asked on 11 Oct 2024

0 answers

5 views

DropDownListFor with Name getting cannot override component name when bound to a model expression error

I have a dropdownListFor in a View which is shared within the tabs in the Kendo Tabstrip. Due to cannot override component name when bound to a model expression error I have commented the Name configuration

My Dropdown:
@(Html.Kendo().DropDownListFor(m => m.Country)
//.Name("city-" + (int)Model.CityID) -- Commented to resolve the error
.DataSource(source =>
{
source.Read(read =>
{
read.Action("GetCities", "Home", new { countryID = (int)Model.CountryID})Type(HttpVerbs.Post);
});
})
.OptionLabel("(Please Select))
.HtmlAttributes(new
{
data_bind = "value: cityValue, events: { change: selectedCityChanged }"
})
)

I have tab strip in which i don't have any issue with the first tab, but for other tabs, the control is not binded properly. Earlier i had the Name to prevent this bind issue.. Need help to fix this issue

I'm using Kendo 2024.3.806 version and ASP.NET Core MVC 8

First Tab:

Second Tab:

DropDownList

TabStrip

asked on 10 Oct 2024

0 answers

4 views

Multi Level Group not Retaining functionality after save

Grouping colapsed after the save.

Grouping should be in the same state as before the save

Need help on this issue. will waiting for you response.

Grid

asked on 10 Oct 2024

2 answers

5 views

Using the cancel Event with JavaScript with Tag Helper

We have a complicated Kendo Grid with Tag Helper notification. We need to use On Cancel Event within edit operation, by pressing Cancel button. Here is an example (but not Tag Helper)

@(Html.Kendo().Grid<MyModel>()
.Name("grid")
.Editable(editable => editable.Mode(GridEditMode.InLine))
.Events(events => events.Cancel("onCancel")) // JavaScript event handler
.DataSource(dataSource => dataSource
.Ajax()
.Model(model => model.Id(m => m.Id))
.Read(read => read.Action("Read", "Controller"))
.Update(update => update.Action("Update", "Controller"))
)
.Columns(columns =>
{
columns.Bound(c => c.Id).Editable(false);
columns.Bound(c => c.Name);
columns.Command(command => command.Edit());
})
)

<script>
function onCancel(e) {
console.log("Edit operation was canceled.");
// e.container is the jQuery object of the edited row or cell.
// You can use this function to handle custom logic after canceling
}
</script>

Grid

answered on 10 Oct 2024

1 answer

10 views

Editor and Content Security Policy

I have an Editor on a page and there are several Content Security Policy violations in the console. Here is an example:

Refused to apply inline style because it violates the following Content Security Policy directive: "style-src-attr 'unsafe-hashes' 'sha256-aqNNdDLnnrDOnTNdkJpYlAxKVJtLt9CtFLklmInuUAE='". Either the 'unsafe-inline' keyword, a hash ('sha256-5TmCSWsRHHKtNC4AgS23KS5Z9SBqma0xikI6H6iJ1/Y='), or a nonce ('nonce-...') is required to enable inline execution.

Is it possible to use an Editor without adding unsafe-inline to style-src-attr?

Thank you

Editor

answered on 09 Oct 2024

1 answer

7 views

Content security policy

We are enabling strict CSP policies. We have managed to get all components working with the exception of the editor component. The default was to set the height of the component is to set a style='height:400px; width:300px" This causes the browser to complain about in-line styles. Is there another way to set the height and width of the component? We are getting issues with the setting of in-line styles by the editor. We are currently setting the nonce property on the tag helper for the editor component. Are we missing something?

Editor

answered on 09 Oct 2024

1 answer

15 views

Content Security Policy Header and Templates

Hello

We are currently working on improving the content security policy header of our application to remove the unsafe-inline and unsafe-eval for the script element.

I am facing some issues when using the Template element with the generated deferred javascript mostly in the grid and I hope someone could help me with that.

Firstly, I'd like to know if there are some tag helpers that could be used to generate some template. To be more explicit : we use some shared and partial views to render the components in edition mode in our grids. These views are written using tag helpers, for instance we have the following file Views\Shared\EditorTemplates\DateTime.cshtml :

@model DateTime
 
<kendo-datetimepicker asp-for="@Model" />

Used in our grids :

column.Bound(User => User.DateCreated).EditorTemplateName("DateTime")

(this is a basic example but we have some more complex views using home made components with taghelper syntax)

I noticed there is a kendo-template tag helper and I would like to know if there is any way to use it in our views, so I could replace my view with the following code and use the EditorTemplateComponentName extension method in my grid :

<kendo-template>
    <kendo-datetimepicker asp-for="@Model" />
</kendo-template>

When I tried to do this I have an exception :

Secondly, I noticed an issue when using some kendo elements in editor templates: the javascript rendered in the deferred script file includes the initialisation scripts at the root of the script file. This mainly cause some issues in my pages when some other element has the same names (but I think it can lead to some other issues).

For instance, I have the following column definition in my grid:

<columns>
    <column field="FullName" title="FullName"></column>
    <column field="DateCreated" title="DateCreated">
        <column-editor-template>
            <kendo-datetimepicker name="dateCreated"></kendo-datetimepicker>
        </column-editor-template>
    </column>
</columns>

Then in the kendo-deferred-script javascript file I can see the dateCreated element is inialized at the beginning of the file and in the template function: