Unplanned
Last Updated: 12 Jan 2022 14:29 by ADMIN
I would like to decorate a property in my model with [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:C}")] and the data management component to render the editor with the correct format. 
Completed
Last Updated: 11 Jan 2022 20:43 by ADMIN
Release 3.0.0

I have a filterable DropDownList in a Grid EditorTemplate. The edit mode is InCell.

When the user opens the dropdown, the edited cell closes immediately with an OnUpdate call. The DropDownList value can be changed only with the keyboard or if I disable DropDownList filtering.

===

The same problem occurs with any component that uses a popup and the popup can gain focus - ComboBox, ColorPicker, etc.

Completed
Last Updated: 10 Jan 2022 13:46 by ADMIN
Release 3.0.0

Try to dynamically switch between Scrollable and Virtual modes. You would need to manually refresh the Skip property through the Grid state, or it won't work.

 

-----------ADMIN EDIT------------

You can use the ValueChanged handler to manually refresh the Skip property as shown below.

public TelerikGrid<ExpandoObject> TelerikGrid { get; set; }

private bool IsPageable = false;

private int Page { get; set; }

public void ChangeHandler(bool value)
{
    //Sync the paging with scrolling

    if (value)
    {
        IsPageable = value;
        var state = TelerikGrid.GetState();
        state.Skip = 0;
        state.Page = 3;

        _ = TelerikGrid.SetState(state);
    }

    IsPageable = value;

    StateHasChanged();
}
 

Completed
Last Updated: 10 Jan 2022 13:19 by ADMIN
Release 3.0.0

Using mobile browser (Safari iOS or Chrome Android)
Go to demo grid page
https://demos.telerik.com/blazor-ui/grid/overview
Click any grid's filter menu which contains text field
Try to enter text into textbox.
The filter menu automatically closed, so you can't enter anything

---

ADMIN EDIT

this happens because the keyboard pops up, changes the screen size and may even scroll the page, and both of these events hide the popup menu.

A workaround could be using the filter row mode, with the caveat that it takes up more space on the initial rendering, and that filtering happens immediately.

---

Completed
Last Updated: 30 Dec 2021 18:23 by ADMIN
Release 2.24.0
Created by: Wei
Comments: 6
Category: Grid
Type: Feature Request
37
there is a feature we want to implement in grid for a row to be dragged and dropped onto another row. is this something we can do with blazor grid?

drag one row or multiple row over another row and have the drop event exposed so we can handle it?
Unplanned
Last Updated: 28 Dec 2021 15:37 by Nemo
Created by: Nemo
Comments: 11
Category: Grid
Type: Feature Request
3

Hi, please expose the debounce delay as a property of TelerikGrid so we can set how soon virtualized columns are loaded after the user scrolls.

**Admin Edit**

This feature request requires research, and if such DebounceDelay parameter can work with good quality in all cases - it will be implemented. Additionally, we will revise the feature together with loading next set of columns if it will be applicable.

**Admin Edit**

Completed
Last Updated: 17 Dec 2021 13:07 by Rob
Release 2.30.0
Created by: Jason
Comments: 18
Category: Grid
Type: Bug Report
18

Occasionally I am getting TaskCancellation errors such as:

[13:07:52 ERR] Unhandled exception in circuit 'hQsJqY3F4XbTbzQETSggJClg_e4YRyQkrKHFMHCXugM'.
System.Threading.Tasks.TaskCanceledException: A task was canceled.
   at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args)
   at Microsoft.JSInterop.JSRuntimeExtensions.InvokeVoidAsync(IJSRuntime jsRuntime, String identifier, Object[] args)
   at Telerik.Blazor.Components.TelerikComboBox`2.Dispose()
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__140_0(Object state)
   at Microsoft.AspNetCore.Components.Rendering.RendererSynchronizationContext.ExecuteSynchronously(TaskCompletionSource`1 completion, SendOrPostCallback d, Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Components.Rendering.RendererSynchronizationContext.ExecuteBackground(WorkItem item)

 

===========

ADMIN EDIT

===========

The error is related to a Microsoft bug. It occurs one minute after some client component has been disposed.

The exceptions are not bypassed due to memory leak. The bug is expected to be fixed in .NET 6 and this will be respected for the Telerik components, so that the errors do not appear.

Declined
Last Updated: 16 Dec 2021 14:03 by Alan

Documentation states that Grid supports Virtualization with Grouping if it is done by loading the Groups on-demand.

See:



On page: Blazor Grid - Load Group Data On Demand | Telerik UI for Blazor

From this, it appears that Virtual Scrolling, Group Load on Demand, and pagination of the results should function as expected.  I'm specifically focusing on the section where it says "load on demand for the data when the user expands a group or when they scroll to need a new set of available groups".

The behavior I am seeing in my Telerik Repl is not matching up with that.

See:  https://blazorrepl.telerik.com/QFbmurvT41eZq6Ld34

 

In the repl, I have added some Console.WriteLines to see when OnRead is actually called, as well as to log out some other information about the OnRead Request.  It can be seen that no pagination information is included in the request (PageSize = 0, Skip = 0) while the PageSize is set on the actual Grid component (PageSize = 20).

 

As a result, all groups are loaded initially, which will be problematic if my server-side data set is being grouped on a value that will result in thousands/millions of groups.

 

It is possible that I missed something in the documentation that would enable the expected behavior (the Grid actually giving me PageSize and Skip so pagination will actually work), but it is also equally possible that this was never intended behavior, and I have been misled by the documentation page.

Unplanned
Last Updated: 14 Dec 2021 14:20 by ADMIN

If a Grid with ColumnVirtualization enabled is programmatically resized at runtime, some of its cells appear empty. 

The same behavior will occur after column resizing. It looks like it is not accordingly updated as if a scroll horizontally, it updates and the missing data is rendered.

===

Edit: Here is a workaround for the column resizing scenario. Part of this approach can be used to workaround Grid resizing as well -

Use the OnStateChanged event simulate horizontal scrolling inside the Grid after column resize. The custom Grid CSS class is optional, if there are pages with multiple Grids.

Razor

<TelerikGrid Class="virtual-grid"
  OnStateChanged="@( (GridStateEventArgs<GridModel> args) => OnGridStateChanged(args) )" />

 

C#

    async Task OnGridStateChanged(GridStateEventArgs<User> args)
    {
        if (args.PropertyName == "ColumnStates")
        {
            await js.InvokeVoidAsync("loadColumns", "virtual-grid");
        }
    }

 

JavaScript

function loadColumns(gridClass) {
    var rowContainer = document.querySelector("." + gridClass + " .k-grid-content");
    if (rowContainer) {
        rowContainer.scrollLeft += 1;
        rowContainer.scrollLeft -= 1;
    }
}

 

Completed
Last Updated: 13 Dec 2021 07:57 by Ironoak
Release 2.9.0
Created by: Michael
Comments: 10
Category: Grid
Type: Feature Request
26
At this point only the user can group the grid. I want to be able to set initial grouping with my code. This should also allow me to group by columns that are not visible/rendered at the moment.
Completed
Last Updated: 08 Dec 2021 14:11 by ADMIN

I have a WASM application and I setup my Grid to use the editor as an editing field in the Grid. When the user types something the application is laggy and it might even hang.

---

ADMIN EDIT

Attached is a sample app that alleviates this a little by using a regular textarea and making editor updates less frequent.

---

Unplanned
Last Updated: 07 Dec 2021 10:15 by ADMIN
Created by: Martin Herløv
Comments: 0
Category: Grid
Type: Feature Request
2
Add the FocusAsync method to the reference of the Grid SearchBox
Completed
Last Updated: 03 Dec 2021 14:32 by ADMIN
Release 2.30.0
Created by: Radko
Comments: 0
Category: Grid
Type: Feature Request
3
I would like to be able to set constraints for min and max width for the draggable resizing introduced by the Resizable parameter of the Column. Meaning, if I set a min width of 50 pixels, I would like for the column to not be able to shrink beyond this point when manually resized by the draggable handle.
Unplanned
Last Updated: 03 Dec 2021 10:40 by ADMIN
Selected items are not preserved when loading the state when the component is bound to ExpandoObjects
Completed
Last Updated: 03 Dec 2021 07:27 by ADMIN
Release 2.30.0
The generated checkbox column html does not have a label (either the label element or aria-label attribute).
Completed
Last Updated: 02 Dec 2021 20:25 by ADMIN
Release 2.30.0
Created by: Jurgen
Comments: 3
Category: Grid
Type: Feature Request
17

I want to edit the Excel file the grid exports before it gets to the user. For example, to add a sheet with data I want to generate, or to change columns, formats, colors.

----

ADMIN EDIT

I have attached to this post an example that shows how you can generate your own exported file so you can customize colors, sheets and so on. It also shows how to cache the DataSourceRequest of the grid so you can extract only the current page or all data, and so you can also apply the current grid sorts/filters and so on to the export. This also lets you add metadata to the sheet such as the current user settings such as filters that resulted in this filter.

----

Completed
Last Updated: 02 Dec 2021 15:20 by ADMIN
Release 2.30.0
Created by: Tom
Comments: 1
Category: Grid
Type: Feature Request
11

Hi,

 

It would be nice to have a property available on a GridColumn where you could indicate that the column should only be visible when you export the data, and not on, screen.

 

Thanks,

Tom

Completed
Last Updated: 02 Dec 2021 15:00 by ADMIN
Release 2.30.0
Created by: Arianis
Comments: 0
Category: Grid
Type: Feature Request
9

I would like to export custom data to excel, for example - the selected items.

 

<AdminEdit>

As an attached file, you can see a sample implementation that shows how you can export the Selected Items from the Grid to excel.

</AdminEdit>

Completed
Last Updated: 02 Dec 2021 10:06 by ADMIN
Release 2.30.0

Using the Excel Export for Grid creates the Excel file, but on opening it, the columns that contain data are hidden. Unless I unhide the columns, the sprceadsheet looks empty.

---
ADMIN EDIT:
One idea to go about this is to expose an event that would allow users to modify the column width values before they get sent for export. The benefit of this approach is that if the columns are resized, the user will receive their current size in the specified unit e.g. rem, em or % and will be able to set the width in px.

Another idea is to default such column widths to some hardcoded value (say, 64px) or even the grid might try to calculate them (which can cause questionable results in stranger settings, but it is an idea - if an event gets exposed you will be able to do that in your application code).

---

Duplicated
Last Updated: 01 Dec 2021 09:54 by ADMIN

I would prefer if you can use the FilterMenuTemplate in such a way that you can fetch also "filter criteria" from other fields/columns.

 

An example:

- grid has 3 coluns > Name, City, Population

- filter mode is set to filter menu and my filter menu should display at the first column.

- after the filter dialog is opened my expactation is that it includes also entries from other fields

 

In summary, my team would welcome the opportunity of central approach for filtering with multiple fields.

 

 

 

Regards,

Özmen