We upgraded to the latest Telerik Blazor components (8.1.1).
I think there's a bug in the TabStrip when setting the index of the ActiveTabIndex or @bind-ActiveTabIndex.
The page will scroll to the active tab automatically.

Here's a link to the Repl - https://blazorrepl.telerik.com/GfaTEmbR45zQSzEq44

If you remove @bind-ActiveTabIndex="@ActiveTabIndex" from the TelerikTabStrip then the page load normally.

Thanks,

Cesar

Hi, 

Are you planning to add a loader to the grid in the feature?

E.g as an isLoading attribute or exepnd the build-in one?

With method OnRead to fetch data, when grid is not yet loaded with data, it displays no records available.

Also when chenging data, loading is not starting, but there is an unsmooth transition after some time. 

Thanks in advance for your time, Kacper

According to the documentation for the ComboBox, https://www.telerik.com/blazor-ui/documentation/components/combobox/filter, "Filtering looks in the TextField, and the filter is reset when the dropdown closes."

However, if the user starts typing and then either selects an item from the dropdown, the filter persists until the user clears the text box or opens the dropdown and clicks outside of it.

Example steps using the below demo link:

1.) Configure settings:


2.) Type the letter 'h':


3.) Select the first option:

4.) Click dropdown arrow and still see filtered list based on the previously typed filter (anything containing an 'h'):



Reproducible on the demo page: https://demos.telerik.com/blazor-ui/combobox/filtering

The matching problem occurs when a user types to filter input and selects an option from the dropdown, then code changes the bound value. If any code changes the bound value to an item that doesn't match the filter, the display field appears empty instead of showing the newly bound value.

For example: if instead of opening the dropdown during step 4, the user clicked a button that programmatically set the value to "Audi", then the field would show to the user as blank. As demonstrated in the following Repl, it is definitely the filters fault, since typing a filter which includes Audi (ex: 'a') does have the text on the ComboBox change when clicking the button to programmatically update the bound value.

https://blazorrepl.telerik.com/cJapEQGO21LFAeLg53

Hi - this one is a feature request, not a bug. :)

For the filter menu, when you enter a filter value, it would be nice if you could press enter to execute the filter instead of having to click "Filter."

We would like to get the datetime picker to autofill the year when entering just two digits for the year with a format of dd-MM-yyyy HH:mm:ss.

So when you enter 23-04-25 it changes to 23-04-2025. Currently it changes it to 23-04-0025, which isn't our desired result.

Something along the lines of how this works: https://jsfiddle.net/anbdwL0h/ but then with a 4 year digit format as result.

On the Spreadsheet control please display a function list when the user types "=" or provide the user with some other reference about the available functions.

• Spreadsheet function dropdown in KendoReact
• Spreadsheet function dropdown in Kendo Angular

I have a scenario in which we have user definable columns for a grid, including hundreds if not thousands that need to be ported from the old version of our product. This means these column keys would be strings that may contain spaces or even special characters - and as such cannot be a valid C# property name (which means using an ExpandoObject approach will not work)

It would be really beneficial if the TelerikGrid component could be given Data of an IEnumerable<Dictionary<string, object>> where the Field property of GridColumn (or a new property) would line up with a key in that dictionary rather than a field name for the component to then use reflection with.

A customer with multiple modules of our product installed may very well have columns with similar names, i.e "Some Key", "SomeKey", "Some_Key", "Some & Key" - so simply replacing spaces or special characters may not always still give unique keys.

Hello,

The Grid header and data cells become misaligned if the user changes the page zoom level. The right padding of the Grid header area resizes, according to the zoom level, but the scrollbar width remains the same. This triggers the misalignment.

The problem disappears after browser refresh at the current zoom level.

After filtering a nullable int column, the SelectAll checkbox in the GridCheckboxColumn stops working.

Reproduction example: https://blazorrepl.telerik.com/mTuyHaYM44sLH2yf05

Hello,

I created a repl to replicate the issue that I'm having. I created a Filter with a custom editor. For this example, I used a Textbox and I save the changes back to the context.FilterDescriptor.Value in the OnChange method which occurs when the user blurs focus.

If you start the repl w/o checking the Use Custom Editor checkbox and enter text where the "Sample" value is located you will see the changes are saved properly to the bound CompositeFilter property and are echo'd back in the screen.

If instead you check the Use Custom Editor box and perform the same test you'll see that the same changes are not present in the bound CompositeFilter. 

Note that this issue only occurs if you start with an existing CompositeFilter and bind it to the filter control. It seems that if the control creates the FilterDescriptor objects then their changes bind properly, but if the FilterDescriptor objects existed before binding to the control then the issue occurs.

https://blazorrepl.telerik.com/wIOtcKOb31mjTc3351

Thank You,

-Andy

============= TELERIK EDIT ===============

A possible workaround is to find the original filter descriptor and update its Value:

@using Telerik.DataSource

@System.Text.Json.JsonSerializer.Serialize(FilterValue)

<br />
<br />

<TelerikFilter @bind-Value="@FilterValue">
    <FilterFields>
        <FilterField Name="Field" Type="@(typeof(string))">
            <ValueTemplate>
                <TelerikTextBox Value="@((string)context.FilterDescriptor.Value)"
                                ValueChanged="@( (string newValue) => OnTextBoxValueChanged(context.FilterDescriptor, newValue) )"
                                DebounceDelay="0" />
            </ValueTemplate>
        </FilterField>
    </FilterFields>
</TelerikFilter>

@code {
    private void OnTextBoxValueChanged(FilterDescriptor templateFD, string newValue)
    {
        var originalFD = FilterValue.FilterDescriptors.OfType<FilterDescriptor>().FirstOrDefault(x =>
        {
            return x.Member == templateFD.Member &&
                x.MemberType == templateFD.MemberType &&
                x.Operator == templateFD.Operator &&
                x.Value == templateFD.Value;
        });

        if (originalFD != null)
        {
            templateFD.Value = newValue;
            originalFD.Value = newValue;
        }
    }

    private CompositeFilterDescriptor FilterValue { get; set; } = new()
    {
        LogicalOperator = FilterCompositionLogicalOperator.Or,
        FilterDescriptors = new FilterDescriptorCollection() {
             new FilterDescriptor()
            {
                Member = "Field",
                MemberType = typeof(string),
                Value = "Sample"
            }
         }
    };
}

Trying to upload a large file from a mobile device breaks the component.
Step to reproduce:

1. Open this REPL example on a mobile device
2. Click the "Load Data" button.

The issue can be reproduced only in version 8.0.0

Hello,

Please consider a Grid feature that changes the component layout on mobile devices or narrow screens. The idea is to switch the column layout to a card layout or anything similar to this example: https://css-tricks.com/responsive-data-tables/

It is possible to implement a similar behavior with the Telerik Blazor Grid and MediaQuery components, but it requires reusing the column titles in the CSS code: https://blazorrepl.telerik.com/GnYPmHFR176Jg5Yg02

===

Telerik Blazor team: Everyone who is interested in this feature, please vote for it to help us prioritize. Also, share your opinion about which Grid features you strictly need in the "mobile" layout and which ones you are ready to sacrifice. Some features don't make sense in a card / listview layout anyway, but still, the mobile-friendly Grid may require completely different HTML markup and UX, so some features may need to be completely revamped.

I want to use the built-in FileManagerToolBarSortTool but I want to remove the "Date Modified" option from the "Sort BY" menu.

===

ADMIN EDIT

===

For the time being, a possible option is to create a custom tool for sorting. You can use the SplitButton component to simulate the built-in UI. Upon selecting option from the dropdown, you may sort your data collection based on the selected custom sort option. Call the Rebind method to refresh the data after updating it.

We are using Telerik UI for Blazor (V6.2.0) grid. The first 3 columns (Delivery No, Spot Check, Spotcheck Status) of the grid are frozen/locked. While horizontal scrolling the header text gets overlapped. We have used custom CSS to change the header color.

<TelerikGrid @ref="@GridRef" Data="@dashboardData"
             Reorderable="true"
             SortMode="@SortMode.Single"
             Pageable="true"
             FilterMode="GridFilterMode.FilterRow"
             PageSize="10"
             EnableLoaderContainer="true"
             Sortable="true" Context="inboundContext" OnRowRender="@OnRowRenderHandler" Width="1800px" Height="500px">