We would like to see all the Blazor controls support the ability to show the time in the browser's local time as a feature that can be enabled.  It should support converted from both UTC and server time.

A question on how to do this has been asked at least twice on the forums:

• https://www.telerik.com/forums/using-client-side-time-zone-for-time-columns-in-blazor-server-grid
• https://www.telerik.com/forums/utc-datetimes-as-local-datetimes-and-vice-versa

Some examples of how other's have implemented this as a control can be founde here:

• https://www.meziantou.net/convert-datetime-to-user-s-time-zone-with-server-side-blazor-time-provider.htm
• https://github.com/dustout/BlazorTime

Thanks

I would like to be able to set the Id on any Blazor component for automated testing purposes.

---

ADMIN EDIT

If you need something different than automated testing selectors, please add your use case in the comments.

For automated testing, you can cascade selectors through a parent element (e.g., a div or span) that has the desired attributes (be that id, class, some data-* attribute, etc.). Adding ID parameters to Blazor components can easily make them brittle because they can be repeated and included in arbitrary hierarchy easily - that's the core concept of a razor component - so such IDs need to be unique, which defeats the predictability you will need for testing.

If you are interested in testing with Selenium, you may find useful this request: https://feedback.telerik.com/blazor/1513117-translators-for-selenium-testing-for-the-telerik-ui-for-blazor-components. If so, Vote for it and Follow it so we can know there is interest, and so you can get status updates.

You can also Follow a separate enhancement for the Grid Command buttons here : https://feedback.telerik.com/blazor/1463164-id-attribute-on-buttons-telerikbuttons-gridcommandbuttons-etc

---

I would like to have a boolean flag like ExpandDropdownOnFocus which when set to true and the component is focused the dropdown will be expanded.

ADMIN EDIT: When voting, please add your comment on how you would like this to be implemented. At the moment, there are two ideas:

• A parameter that, when set to true, will make the dropdowns shop up when the component receives focus - less code, but solves only one specific scenario
• An OnFocus event plus an instance method that opens the dropdown - a little more code (handle an event, populate a reference, call its method) which will provide more functionality and flexibility as the event will let you know that focus happened and you can add more logic (calculations, change CSS classes,...)

See below repl

https://blazorrepl.telerik.com/GeYodYvp135zJH7N22

The first dropdown is populated correctly, it is not in a FormItem or Template

The second one, populated in the same way but inside a FormItem context does not show the data, it only redraws and shows data when entering another control i.e. the other working dropdown.

This was previously working when the application was using .net 6 and Telerik 3.6.1
It has since been updated to .net 8 and Telerik 5.1.1

What is the correct way to populate this?
Can you provide more information?

Thanks.

Please consider adding to Blazor UI a drop-down treeview component with:

• multiple selections via checkboxes
• expand/collapse
• lazy loading on expand
• tag mode

Example:

Thank you

Hi,

Here is my demo DatePicker Demo

In Firefox, after I use the mouse to black all texts out, then DatePicker only selects the month field in the place holder. I expect to select all texts.

In Chrome or Edge, the DatePicker works as expected, after blacking texts out, it selects all texts in the place holder

Could you please check the issue?

Thanks and regards,

Tung

Hi.

I'd like to request the ability to use a TimeSpanPicker component in Blazor.

For example, see https://www.telerik.com/maui-ui/timespanpicker

Thank you.

Currently using Telerik.DataSource.QueryableExtensions.CreateDataSourceResult() results in queryable.Count() + queryable.Skip(...).Take(...). done seperatelly. EF Core specific tests are already present it seems, based on decompiled code, I can see: "if (!sort.Any() && queryable.Provider.IsEntityFrameworkProvider())". 

Request: Add support for other ORM's that are more capable than EF Core. In case of pagination, window-function could be used to save from extra count query. A short sample bellow:

var dbResults = await queryable
	.Select(x => new {
		Item = x,
		TotalCount = Sql.Ext.Count().Over().ToValue()
	})
	.Skip(() => offset)
	.Take(() => limit)
	.ToListAsync();

var count = dbResults.FirstOrDefault()?.TotalCount ?? 0;
var items = dbResults.Select(x => x.Item);

Read more about Window functions: https://statics.teams.cdn.office.net/evergreen-assets/safelinks/1/atp-safelinks.html 

Hello,

We use extensively the features of Telerik WPF RadMap and are now migrating to Blazor. So we are trying to use TelerikMap to cover our needs.

TelerikMap doesn't support WMS (most important) and vector tile (nice to have) layers.

Implementing them directly is not really important but having some class available for us to override to implement our way could be enough.

In Telerik WPF RadMap, we had TiledProvider and TiledMapSource from which we made our own implementations to cover our needs (WMS with specific parameters mostly), we override the method GetTile and from here we can do whatever we want.

It would be nice to have the same system in Blazor

Thanks

Thomas

We find this in our infrastructure but it can be reproduced even in Telerik docs.

Docs page: https://docs.telerik.com/blazor-ui/components/grid/grouping/overview try to drop all three columns using drag and drop in sequence: Team, Name, On Vacation.

Expected sequence: Team, Name, On Vacation

Expected sequence: Team, On Vacation, Name

All Elements are always added as 1 item. It is an important feature for us, as our customers use it frequently.

===

TELERIK EDIT:

A possible workaround is to intercept the grouping and reorder the groups:

@using Telerik.DataSource

<p>Group by a third column, so that it should come last in the Group Panel:</p>

<TelerikGrid @ref="@GridRef"
             Data="@GridData"
             Pageable="true"
             Sortable="true"
             Groupable="true"
             FilterMode="GridFilterMode.FilterRow"
             OnStateInit="@( (GridStateEventArgs<Employee> args) => OnGridStateInit(args) )"
             OnStateChanged="@( (GridStateEventArgs<Employee> args) => OnGridStateChanged(args) )">
    <GridColumns>
        <GridColumn Field="@nameof(Employee.Name)" />
        <GridColumn Field="@nameof(Employee.Team)" />
        <GridColumn Field="@nameof(Employee.Salary)" />
        <GridColumn Field="@nameof(Employee.OnVacation)" />
    </GridColumns>
</TelerikGrid>

@code {
    private TelerikGrid<Employee>? GridRef { get; set; }

    private List<Employee> GridData { get; set; } = new();

    private void OnGridStateInit(GridStateEventArgs<Employee> args)
    {
        args.GridState.GroupDescriptors = new List<GroupDescriptor>();

        args.GridState.GroupDescriptors.Add(new GroupDescriptor()
        {
            Member = nameof(Employee.Team),
            MemberType = typeof(string)
        });

        args.GridState.GroupDescriptors.Add(new GroupDescriptor()
        {
            Member = nameof(Employee.OnVacation),
            MemberType = typeof(bool)
        });
    }

    private async Task OnGridStateChanged(GridStateEventArgs<Employee> args)
    {
        if (args.PropertyName == "GroupDescriptors" && args.GridState.GroupDescriptors.Count > 2 && GridRef != null)
        {
            var secondGroupDescriptor = args.GridState.GroupDescriptors.ElementAt(1);

            args.GridState.GroupDescriptors.Remove(secondGroupDescriptor);
            args.GridState.GroupDescriptors.Add(secondGroupDescriptor);

            await GridRef.SetStateAsync(args.GridState);
        }
    }

    protected override void OnInitialized()
    {
        var rnd = new Random();

        for (int i = 1; i <= 20; i++)
        {
            GridData.Add(new Employee()
            {
                Id = i,
                Name = "Name " + i,
                Team = "Team " + (i % 4 + 1),
                Salary = (decimal)rnd.Next(1000, 3000),
                OnVacation = i % 3 == 0
            });
        }
    }

    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; } = string.Empty;
        public string Team { get; set; } = string.Empty;
        public decimal Salary { get; set; }
        public bool OnVacation { get; set; }
    }
}

When is Spreadsheet for Blazor available or can i use Kendo Spreadsheat?

Regards

Alois Seidler 

On Blazor Filter, please consider option to drag and drop rules to re-order the rules. It's a common user request that when creating complex rules that user has ability to move rules around without having to delete and create again. User loses information and data when rules are deleted and can be difficult to relocate in long drop downs.

Ability to drag and drop move of existing rules would improve user experience. Any change to GUI should also reflect in updated FilterDescriptor.

===

ADMIN EDIT

===

The order of the filter rules in one group does not make a difference for the FilterDescriptor. Thus, the current request applies to dragging filter rules from one group to another.

Horizontal scrolling in the grid works when its width is set to a fixed value (px, rem, etc.). But the h scroll disappear when a percentage is assigned to the width of the grid.

This seems to be a known 'feature' to Telerik:

https://docs.telerik.com/blazor-ui/components/grid/columns/width?_gl=1*78gyue*_ga*MzUzNTU3NTM0LjE2ODU2MTc3Njk.*_ga_9JSNBCSF54*MTcxMjIyMTAxNS44My4xLjE3MTIyMjExMzQuOS4wLjA.*_gcl_au*MTA3OTA1NzUyOS4xNzEwNTE1Njgy&_ga=2.263164300.1038437897.1712221016-353557534.1685617769

A sensible behaviour is to have the horizontal scrolling enabled and at the same time being able to set the grid to percentage width.

On Blazor filter field parameters, please consider adding

1/ Group options, eg using demo sample fields drop down looks like this

Id
Quantity
Freight
Country
Ship to
Ship Address

but it would be useful to allow groping fields by common categories?

Group-1
-Id
-Quantity
-Freight
Group-2
-Country
-Ship to
-Ship Address

2/ Related, can you also add sort index for group and fields so they can be sorted by index rather than field name. Sometimes groups and fields require different order that is not always alphanumerical and may change order based on other selections.

3/ Maybe consider feature parity with filter field options here querybuilder

Hi Telerik Team,

it would be nice to have some sort of control if a map layer (marker, bubble) etc. is shown at the currently selected zoom level. Let's say you have some map marker layers that show only big cities. If zoom is far out you may want to see just a few but when zoomed in, then there should be others (more or less) visible. It seems that some marker layers won't scale that precise on far zoom levels and maybe you want to hide some layers then.

If you need further information, don't hesitate to get in contact.

Regards,
Thomas

Hi,
I have a little problem with changing the LoadGroupsOnDemand value. Depending on the data in my grid, I set this value to true or false. When updating grid data requires changing the LoadGroupsOnDemand value, I can't do it this way:

LoadGroupsOnDemand = true;
GridData = result;
GridRef.SetStateAsync(GridRef.GetState());

This code throws me an exception.
I need to do something like this to make it work:

LoadGroupsOnDemand = true;
GridRef.LoadGroupsOnDemand = LoadGroupsOnDemand;
GridData = result;
GridRef.SetStateAsync(GridRef.GetState());

This is the code that is executed in onclick. After OnRead is executed, the exception is thrown.

Let me know if you need more information.