On a TelerikGrid, I allow users to filter, resize, reorder, hide and lock coumns.  I also have a button that lets them reset the grid state to the default settings.

This all works great except that the locked property of a grid column cannot be cleared under any circumstances that I can find.  When I set state to null using SetStateAsync(null), all the user customizations are reset back to defaults and the grid is re-bouund, but the user-locked columns stay locked.  Even if I trigger another manual rebind it does not update the locked status.  I have to do a full page refresh to get back to the normal state.

I have a demonstration of this behavior here:

https://blazorrepl.telerik.com/mUYyvRPU52qGBUkY21

To reproduce:

1. using the above Repl, change a couple of columns settings like width, order, sort or filter
2. using the drop down menu on the first column, set the state to locked
3. click on the Reset State button
4. notice that all settings are reset to original, except for the locked column

One thing I have done with some success is instead of setting GridState to null, I create a new empty grid state , create a ColumnState for every column and set the Locked property to false.  That will unlock the column.  However,  the default state of some of our colums is locked=true and  I don't have a way of programmatically determining which columns should be locked by default, so this method unlocks all columns, which is not what I want.

Is there a reason that the locked status is not reset with the other settings and is there any way to force them to reset? Alternatively, is there any way to get the default column status out of the grid at runtime?

I'm trying to save the page number and page size of a Grid to be later restored if the page with that grid is loaded again, and I have 2 issues with the 'All' size.

My Sizes list is

       private List<int?> PageSizes { get; set; } = [50, 100, 250, null];

If my grid has 76 rows and I select 'All' from the pager dropdown, the PageSize property is set to 76, but the dropdown shows 'All'.
If I then add a row to the grid, it is still showing 'All', but with page 1 of 2, where page 1 contains 76 items and page 2 contains 1 item.
Choosing 'All' again shows 1 page with 77 items.
That is my first issue, 'All' isn't all, but the current number of items

The second issue is when I set the Page and Pagesize with the values I saved earlier, the page size dropdown is showing '76', not 'All'. (76 isn't even a member of the PageSizes list. ). What value do I have set the PageSize to to force the dropdown to show 'All'?

Kind regards,

Kees Alderliesten

According to the documentation, Blazor DropDownTree Events - Telerik UI for Blazor, OnChange is invoked separately from ValueChanged to indicate the user has finalized a change, similarly to other components.

However, as far as I can tell, the OnChange event is never invoked, no matter what I try with the interface. Binding otherwise works fine.

Is this correct? I'm assuming since binding otherwise works fine, this could just be a documentation issue.

Using Telerik.UI.for.Blazor v13.1.0, DropDownTree is within a Razor component.

This is version 12.3.0

An application in production grew in memory consumption to several gigabytes and I've pinpointed the problem to the grid. The data of the grid is being updated frequently and each time the data of the grid is being updated with a new list, the memory goes up with hundreds of megabyte. Even when the page is reloaded with F5, the memory is not released. 

I ran some memory profiling in visual studio 2022 but could not find anything useful (I'm not good at profiling), except that the object that has the most diff between snapshots is SharedArrayPool+Partition<Byte>

In the end I had to force a Garbage Collection before setting the Data prop of the grid, which helps.

Perhaps there is a better (or a right) way to update the data of the grid? I've tried so many things now :D

(Telerik.UI.for.Blazor v13.1.0)

I was scratching my head over this one for a while. No matter what I tried, even though the data and initial value were valid, the control always initially showed "None" (or just blank, depending on DefaultText). Interestingly, the X close button also was visible, so the control "knew" the value was set.

I tried all kinds of workarounds, delayed rendering, Rebind(), setting the value programmatically, nothing.

I'm sharing the workaround that worked for me, hopefully save some other users some time. Turned out all I needed to do was to add a custom ValueTemplate:

<TelerikDropDownTree Data="@myTreeData"
                     @bind-Value="selectedTreeValue"
                     DefaultText="None"
                     ShowClearButton="true">
    <ValueTemplate>
        @{
            var selectedItem = FindItemById(myTreeData, selectedTreeValue);
            <span>@(selectedItem != null ? selectedItem.Text : "None")</span>
        }
    </ValueTemplate>
</TelerikDropDownTree>

I keep getting these errors after i updated to the latest release for a lot of charting components. This one is with ChartSeriesType.Area. The areas are there but don't have any coloring and are invisible.

Hello,

when typing a date quickly via keyboard into a TelerikDatePicker, the component behaves incorrectly in multiple ways:

• Digits appended to the year segment — Instead of replacing the year value, newly typed digits are appended to the existing year (e.g. typing "2026" results in "20262026" or similar).
• Cursor jumps back to the day segment mid-input — While typing the month or year, focus unexpectedly returns to the day segment, causing subsequent keystrokes to overwrite the wrong field.

These issues make it nearly impossible to enter a date by typing it in one fluid motion, which is a common workflow for power users and keyboard-centric data entry.

Steps to reproduce: (also reproducible on the official Telerik demo page).
Click into the DatePicker so the day segment is focused.
Type a full date quickly (e.g. 02022020 for 02.02.2020) without pausing between segments.
Observe that the resulting date is incorrect — digits are misplaced or the cursor jumps unexpectedly.

Best regards

I have a situation where I need the:

EditMode="GridEditMode.Incell"

but I also need to have an event trigger when the row is updated:

EditMode="GridEditMode.Inline"

There is no mode that supports both, what are my options?

I need to be able to trigger some action on a Cell by Cell update basis, but also need to trigger a specific action on a Row update.

Thoughts?

Robl