Completed
Last Updated: 03 Jul 2019 11:45 by ADMIN
Release 1.3.0
Created by: Brandon
Comments: 0
Category: UI for Blazor
Type: Feature Request
4

At the moment, dropdown and popups (like the DatePicker and DropDownList) render in the place of declaration, and CSS rules from their parent elements affect them heavily (for example, they are hidden behind grid cells when used as custom editors).

The popups should be detached and rendered higher in the DOM if possible, so they don't get confined in their parent like that. This may be applicable for more components as well.

Completed
Last Updated: 22 Jun 2021 19:26 by ADMIN
Release 2.25.0
Created by: Emanuel
Comments: 0
Category: UI for Blazor
Type: Feature Request
4

Hi

I would like a "Steper" as the one you have in your MVC product.

Completed
Last Updated: 28 Feb 2020 08:04 by ADMIN
Created by: Daniel
Comments: 4
Category: UI for Blazor
Type: Feature Request
3

Hi there,

i'm struggling with kendo theming. I'm trying to implement a material ui with telerik ui for blazor. I did follow the steps in the getting started pages but i'm getting a half baked ui which is missing essential parts like the focus animations for textboxes like shown in the textbox demo: https://demos.telerik.com/blazor-ui/textbox/overview.

My recent approach was to compile the files in the kendo theme Git repository but these also don't work.

What am i doing wrong? How exactly did you achieve the full material experience in the demos?

So lonG

Daniel

Completed
Last Updated: 11 Oct 2021 06:36 by ADMIN
Release 2.28.0

Optimise/Tailor inputs for screen reader users

globally for Telerik Blazor controls/inputs components we would prefer the ability to assign aria attributes. This will enable my organisation's user experience to improve for people relying on screen readers. 

aria-labelledby will enable us to stack labels for inputs in a group.

aria-describedby will enable us to provide additional information in context to an input, without the need for users to jump out of the input and find it.

Completed
Last Updated: 28 Mar 2023 16:56 by RAY

Hi

Trying to update to the latest version but in output in GitHub Actions it shows:

The type 'DataSourceRequest' is defined in an assembly that is not referenced. You must add a reference to assembly 'Telerik.DataSource, Version=2.1.3.0

However in my csproj I am referencing <PackageReference Include="Telerik.DataSource" Version="2.1.3" />

Any ideas?

Completed
Last Updated: 01 Dec 2023 14:07 by ADMIN
Release 5.1.0 (31 Jan 2024) (R1 2024)
Created by: Peter
Comments: 1
Category: UI for Blazor
Type: Bug Report
3

So, brand new machine (Win 11 pro 64bit), brand new install of Visual Studio & Telerik, use the Telerik templates to create a new Blazor Server project.

When I run the application (with changes or first run), it takes almost a minute to start the application.

Without changes it starts in 2 seconds.

The fix is to add the following to the application's csproj file.

  <PropertyGroup>
    <UseRazorBuildServer>false</UseRazorBuildServer>
  </PropertyGroup>

After the fix, it takes an just a little longer to run than without changes.  Since I have not heard back on my support ticket, I wanted to report this as a bug so hopefully it can get upvoted and we can get an answer to this issue. 

Original support ticket https://www.telerik.com/account/support-center/view-ticket/1621737 

My Setup:

7950x, 32 gb DDR5 ram, WD Black SSD 850x SSD and slower internet 150mbit/s

Similar problem with my new laptop which is about 50% slower but exactly the same issue.

Peter

 

Completed
Last Updated: 09 Dec 2020 12:40 by ADMIN
Release 2.21.0
Created by: Frank
Comments: 0
Category: UI for Blazor
Type: Bug Report
3

If I set the Visible parameter to false for either ToolBarButton or ToolBarToggleButton it does not hide them from the UI. 

<AdminEdit>

A workaround would be to use the Class parameter and add a display:none CSS rules. 

Code snippet for the workaround:

<style>
    .hidden-button{
        display:none;
    }
</style>

<TelerikToolBar>
    <ToolBarButton Class="hidden-button">Hidden button</ToolBarButton>
    <ToolBarButton Icon="@IconName.Star">Visible button</ToolBarButton>
    <ToolBarToggleButton Class="hidden-button">Hidden toggle button</ToolBarToggleButton>
    <ToolBarToggleButton @bind-Selected="@isSelected">Visible toggle button</ToolBarToggleButton>
</TelerikToolBar>

@code {
    public bool isSelected { get; set; } = true;
}

</AdminEdit>

Completed
Last Updated: 24 Oct 2022 14:27 by ADMIN
Release 3.7.0 (09 Nov 2022)
Created by: Daniel
Comments: 0
Category: UI for Blazor
Type: Feature Request
3
I would like to customize the appearance of the cells of the calendar in all Date pickers. 
Completed
Last Updated: 23 Sep 2020 09:27 by ADMIN
Release 2.18.0
Created by: Roy
Comments: 0
Category: UI for Blazor
Type: Bug Report
3
With "System.NullReferenceException : Object reference not set to an instance of an object" coming from TelerikRootComponent.AddFragment(RenderFragment fragment)
Completed
Last Updated: 15 Jul 2020 13:42 by ADMIN
Release 2.16.0
Created by: mtrejo30
Comments: 5
Category: UI for Blazor
Type: Bug Report
3

 

This error appears after update 15, in 14.1 it works correctly.

 

ADMIN EDIT:

This error occurs from the FilterMode set to FilterRow. As a workaround, until the fix is implemented, you could use the FilterMenu instead.

 

Regards

 

 

blazor.server.js:15 [2020-06-30T23:44:51.768Z] Error: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at Telerik.Blazor.Components.Grid.GridCellBase`1.get_Column()
   at Telerik.Blazor.Components.Grid.GridCellBase`1.get_BoundColumn()
   at Telerik.Blazor.Components.Grid.GridFilterCell`1.get_BoundColumnFilterCellTemplate()
   at Telerik.Blazor.Components.Grid.GridFilterCell`1.BuildRenderTree(RenderTreeBuilder __builder)
   at Microsoft.AspNetCore.Components.ComponentBase.<.ctor>b__6_0(RenderTreeBuilder builder)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

 

 

Completed
Last Updated: 23 Aug 2023 14:28 by ADMIN
Release 4.5.0 (08/30/2023) (R3 PI2)
Created by: Steve
Comments: 2
Category: UI for Blazor
Type: Feature Request
2
Do you plan to develop a DropDownButton component for Blazor with functionality found in the UI for WPF DropDownButton 
Completed
Last Updated: 09 Mar 2020 14:12 by ADMIN
Release 2.9.0

After setting Enaabled=false on e.g. a TelerikTextBox, there is still possible to "tab" in to the textbox and write in it....

 

See attached.

Completed
Last Updated: 21 Dec 2020 09:00 by ADMIN
Release 2.21.0

I have a numeric text box that is bound to a nullable int. There is also a combo box on the page that will auto set the value and disable the numeric text box if certain values are selected. as follows:



<TelerikComboBox Data="@TareTypes" TextField="Name" ValueField="Id" ValueExpression="@(() => Material.TareTypeId)" ValueChanged="@((int? e) => TareTypeChanged(e))" Width="200px" Placeholder="Tare Type" ClearButton="true"></TelerikComboBox>

<TelerikNumericTextBox @bind-Value="@Material.TareWeight" Arrows="false" Enabled="@tareWeightEnabled" ></TelerikNumericTextBox>

and the code...


private void TareTypeChanged(int? tareTypeId)
        {
            Material.TareTypeId = tareTypeId;
            tareWeightEnabled = true;
            if (tareTypeId > 0)
            {
                var tareTypeWeight = TareTypes.Single(t => t.Id == tareTypeId).Weight;
                if (tareTypeWeight.HasValue)
                {
                    Material.TareWeight = tareTypeWeight;
                    tareWeightEnabled = false;
                    editContext.NotifyFieldChanged(editContext.Field("TareWeight"));
                }
            }
        }

the following steps should reproduce the problem

 

  1. enter a value in the numeric text box and then clear it out
  2. select a value from the combo box that auto sets the numeric text box value and disables it
  3. select a value from the combo box that re-enables the text box. At this point the value is still visible in the text box (as it should be) and the text box is enabled
  4. Focus in the text box. this causes the number to disappear. it's as if the number was just a place holder which clears out when you focus on the control.
Completed
Last Updated: 31 Mar 2022 13:44 by ADMIN
Release 3.2.0
Created by: Wayne Hiller
Comments: 0
Category: UI for Blazor
Type: Feature Request
2

Can you add Debounce to the filtering?

---

ADMIN EDIT

At the moment, you can use the OnRead to implement custom filtering and also debounce the operations: https://docs.telerik.com/blazor-ui/components/combobox/events#onread and the particular example the article links is shown here: https://docs.telerik.com/blazor-ui/knowledge-base/combo-debounce-onread

You may also want to look at item virtualization in the dropdowns - Follow it here: https://feedback.telerik.com/blazor/1457808-combobox-virtualization

There is also a sample attached of implementing debouncing in a WASM app as a reference too.

---

Completed
Last Updated: 22 Jun 2021 19:27 by ADMIN
Release 2.25.0
Created by: Marin Bratanov
Comments: 0
Category: UI for Blazor
Type: Feature Request
2

A stack panel component that creates a layout of items that are vertically positioned.

tpf-layout-predefined-layout-panels-stacklayoutpanel 001

It could also have a wrap layout to make the items horizontal with wrapping

tpf-layout-predefined-layout-panels-wraplayoutpanel 001

or horizontal without wrapping

Completed
Last Updated: 15 Apr 2022 10:55 by ADMIN
Release 3.3.0
Created by: Steve
Comments: 3
Category: UI for Blazor
Type: Feature Request
2

Create code snippets for all Blazor controls.

Provide either automation for installing into the Visual Studio toolbox or just provide as a web page for users to copy paste them into the Toolbox.

Completed
Last Updated: 18 Nov 2022 10:25 by ADMIN
Created by: Datafyer
Comments: 3
Category: UI for Blazor
Type: Feature Request
2

It would be helpful in some cases to specify which grid lines to display with a default of both:

None - No lines

Horizontal - Only horizontal row lines

Vertical - Only vertical column lines.

Both - H/V lines

Completed
Last Updated: 09 Apr 2019 22:15 by ADMIN
Created by: Loren
Comments: 2
Category: UI for Blazor
Type: Feature Request
2

I would love to see this UI control for blazor with all the same great features

  • Filtering/Searching
  • Templates
  • Grouping
  • Cascading
Completed
Last Updated: 19 May 2020 16:15 by ADMIN
Release 2.14.0
Created by: Kostas
Comments: 1
Category: UI for Blazor
Type: Bug Report
2

Based on the example used in this page (https://docs.telerik.com/blazor-ui/components/grid/editing/incell)

i tried to use a component of my own composed by teleriks components in the editor template

 


@page "/fetchdata"
@using Microsoft.AspNetCore.Authorization
@using Microsoft.AspNetCore.Components.WebAssembly.Authentication
@inject IAccessTokenProvider AuthenticationService
@inject NavigationManager Navigation
@inject WeatherForecastDataSource WeatherForecastDataSource
@using Olympus.Artemis.Shared
@attribute [Authorize]

<h1>Weather forecast</h1>

<p>This component demonstrates fetching data from the server.</p>


<table class="table">
    <thead>
        <tr>
            <th>Date</th>
            <th>Temp. (C)</th>
            <th>Temp. (F)</th>
            <th>Summary</th>
        </tr>
    </thead>
    <tbody>
        <TelerikGrid Data="_data" Height="400px"  
                     Pageable="true" Sortable="true" Groupable="true" EditMode="@GridEditMode.Incell" Navigable="true"
                     FilterMode="Telerik.Blazor.GridFilterMode.FilterRow" @ref="_grid"
                     Resizable="true" Reorderable="true">
            <GridColumns>
                <GridColumn Field=@nameof(TestItem.WeatherForecastID) Title="Position" Width="200px">
                    <Template Context="item">
                        @{

                            var value = ((TestItem)item).WeatherForecastID;
                            var text = data.Where(x => x.ID == value).Select(x => x.Date).FirstOrDefault();

                        }
                        @text
                    </Template>
                    <EditorTemplate>
                        @{
                            currentItem = context as TestItem;
                            <Test2 OnChange="@onChange" DataSource="@this.WeatherForecastDataSource" Value="@currentItem.WeatherForecastID"></Test2>
 
                        }
                    </EditorTemplate>
                </GridColumn>
            </GridColumns>
        </TelerikGrid>


       
    </tbody>

</table>


@code {   
    protected async Task onChange(object o) {
        currentItem.WeatherForecastID =(Guid) o;
        Console.WriteLine("wrwerwe"+currentItem.WeatherForecastID);
        await CloseEditor(currentItem);
    }
    protected async override Task OnParametersSetAsync()
    {
        data =await WeatherForecastDataSource.GetDataAsync();

        await base.OnParametersSetAsync();
    }
    public List<WeatherForecast> data = new List<WeatherForecast>();
    public TestItem currentItem { get; set; }
    TelerikGrid<TestItem> _grid;
    DateTime selectedValue { get; set; } = DateTime.Now;
    private List<TestItem> _data = new List<TestItem>()
    {
            new TestItem { MyDate = DateTime.Today, DateName = "Σημερα" ,WeatherForecastID= new Guid("be4f3a98-5fd3-4972-bc49-1c442cdf87dd") ,ID=Guid.NewGuid()},
            new TestItem { MyDate =DateTime.Today.AddDays(1), DateName = "Αύριο",WeatherForecastID=new Guid("7fac0c25-653b-4606-afef-19f6e27fc57a"),ID=Guid.NewGuid() },
            new TestItem { MyDate =DateTime.Today.AddDays(2), DateName = "Μεθαύριο" ,WeatherForecastID= new Guid("48eb0a12-5971-479a-852d-6383f30e14cb"),ID=Guid.NewGuid()},
            new TestItem { MyDate =DateTime.Today.AddDays(3), DateName = "Αντιμεθαύριο" ,WeatherForecastID= new Guid("113bde91-b0b9-45e0-9d4b-5b280650e042"),ID=Guid.NewGuid()}
    };


    public class TestItem:Olympus.Artemis.Shared.InfoEntities.BaseInfo {
        public Guid WeatherForecastID { get; set; }
        public DateTime MyDate { get; set; }
        public string DateName { get; set; }
        public override bool Equals(object obj)
        {
            if (obj != null && obj is TestItem)
            {
                TestItem curr = obj as TestItem;
                return (ID == curr.ID) && (WeatherForecastID == curr.WeatherForecastID) && (MyDate == curr.MyDate) && (DateName == curr.DateName);
            }
            return false;
        }
    }
    public async Task CloseEditor(TestItem currentItem)
    {
        var state = _grid?.GetState();

        if (currentItem.ID == null && state.InsertedItem != null)
        {
            // insert operation - the item is new
            await CreateHandler(new GridCommandEventArgs()
            {
                Item = state.InsertedItem
            });
        }
        else
        if (currentItem.ID != null && state.EditItem != null)
        {
            Console.WriteLine($"field c {state.EditField}  {typeof(TestItem).GetProperty(state.EditField).GetValue(currentItem)}");
            Console.WriteLine($"field e {state.EditField}  {typeof(TestItem).GetProperty(state.EditField).GetValue(state.EditItem)}");

            // edit operation on an existing item
            await UpdateHandler(new GridCommandEventArgs()
            {
                Item = state.EditItem,
                Field = state.EditField
            });
        }

        state.InsertedItem = state.OriginalEditItem = state.EditItem = default;
        StateHasChanged();
        await Task.Delay(200); // let the grid re-render and close the cell if keyboard navigation is enabled

        await _grid?.SetState(state);
    }
    async Task UpdateHandler(GridCommandEventArgs args)
    {

        string fieldName = args.Field;
        object newVal = args.Value; // you can cast this, if necessary, according to your model
        Console.WriteLine(fieldName);

        TestItem item = (TestItem)args.Item; // you can also use the entire model
        Console.WriteLine(item.ID);

        // perform actual data source operation here through your service

        // if the grid Data is not tied to the service, you may need to update the local view data too
        var index = _data.FindIndex(i => i.ID == item.ID);
        if (index != -1)
        {
            if (!_data[index].Equals(item))
            {
                _data[index] = item;
                Console.WriteLine("Update event is fired for " + args.Field + typeof(TestItem).GetProperty(args.Field).GetValue(item));
                // this copies the entire item, consider altering only the needed field
            }
        }

    }
    async Task CreateHandler(GridCommandEventArgs args)
    {
        TestItem item = (TestItem)args.Item;

        item.ID = Guid.NewGuid();
        _data.Insert(0, item);

        Console.WriteLine("create");
        // perform actual data source operation here through your service
    }


}

 

The test2 component created by me is this one It only includes a telerikdropdown

@using Olympus.Artemis.Shared
<TelerikComboBox Data="@Items" Value="@Value" ValueField="ID" OnChange="@OnChange" TextField="Date">

</TelerikComboBox>
@code {


    [Parameter]
    public EventCallback<Object> OnChange { get; set; }

 

    [Parameter]
    public Guid Value { get; set; }

    [Parameter]

    public DataSource<WeatherForecast> DataSource { get; set; }

    private IEnumerable<WeatherForecast> Items { get; set; } = new List<WeatherForecast>();
    protected async override Task OnInitializedAsync()
    {
        Items = await DataSource.GetDataAsync();

        await base.OnInitializedAsync();
    }


}

But when i try to select something from the dropdown list the grid cel does not close gracefully 

I get this error (the problem is when it executed the line   await _grid?.SetState(state);)

 

blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       Unhandled exception rendering component: Unknown edit type: 0
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       Error: Unknown edit type: 0
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at e.applyEdits (https://localhost:44310/_framework/blazor.webassembly.js:1:15000)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12872)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at interp_exec_method (wasm-function[1126]:0x25a67)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 Microsoft.JSInterop.JSException: Unknown edit type: 0
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 Error: Unknown edit type: 0
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at e.applyEdits (https://localhost:44310/_framework/blazor.webassembly.js:1:15000)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12872)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at interp_exec_method (wasm-function[1126]:0x25a67)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,T2,TResult] (System.String identifier, T0 arg0, T1 arg1, T2 arg2) <0x3038030 + 0x00046> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,TResult] (System.String identifier, T0 arg0, T1 arg1) <0x3037f50 + 0x00014> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer.UpdateDisplayAsync (Microsoft.AspNetCore.Components.RenderTree.RenderBatch& batch) <0x3037e58 + 0x0001e> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue () <0x2de1a68 + 0x000f2> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       Unhandled exception rendering component: Cannot read property 'parentNode' of undefined
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       TypeError: Cannot read property 'parentNode' of undefined
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.e [as removeLogicalChild] (https://localhost:44310/_framework/blazor.webassembly.js:1:6927)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at e.applyEdits (https://localhost:44310/_framework/blazor.webassembly.js:1:13641)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12872)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 Microsoft.JSInterop.JSException: Cannot read property 'parentNode' of undefined
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 TypeError: Cannot read property 'parentNode' of undefined
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.e [as removeLogicalChild] (https://localhost:44310/_framework/blazor.webassembly.js:1:6927)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at e.applyEdits (https://localhost:44310/_framework/blazor.webassembly.js:1:13641)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12872)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,T2,TResult] (System.String identifier, T0 arg0, T1 arg1, T2 arg2) <0x3038030 + 0x00046> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,TResult] (System.String identifier, T0 arg0, T1 arg1) <0x3037f50 + 0x00014> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer.UpdateDisplayAsync (Microsoft.AspNetCore.Components.RenderTree.RenderBatch& batch) <0x3037e58 + 0x0001e> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue () <0x2de1a68 + 0x000f2> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       Unhandled exception rendering component: No element is currently associated with component 96
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1       Error: No element is currently associated with component 96
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at interp_exec_method (wasm-function[1126]:0x25a67)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1           at interp_runtime_invoke (wasm-function[5660]:0xf937a)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 Microsoft.JSInterop.JSException: No element is currently associated with component 96
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1 Error: No element is currently associated with component 96
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at e.updateComponent (https://localhost:44310/_framework/blazor.webassembly.js:1:12336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.t.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:1704)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at Object.window.Blazor._internal.renderBatch (https://localhost:44310/_framework/blazor.webassembly.js:1:34679)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at _mono_wasm_invoke_js_unmarshalled (https://localhost:44310/_framework/wasm/dotnet.3.2.0-preview5.20216.1.js:1:166495)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at wasm_invoke_iiiiii (wasm-function[3166]:0x9d336)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at icall_trampoline_dispatch (wasm-function[5782]:0x1006fa)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at mono_wasm_interp_to_native_trampoline (wasm-function[4612]:0xcc80e)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at ves_pinvoke_method (wasm-function[3215]:0x9ed39)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at interp_exec_method (wasm-function[1126]:0x25a67)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1     at interp_runtime_invoke (wasm-function[5660]:0xf937a)
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,T2,TResult] (System.String identifier, T0 arg0, T1 arg1, T2 arg2) <0x3038030 + 0x00046> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.JSInterop.WebAssembly.WebAssemblyJSRuntime.InvokeUnmarshalled[T0,T1,TResult] (System.String identifier, T0 arg0, T1 arg1) <0x3037f50 + 0x00014> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer.UpdateDisplayAsync (Microsoft.AspNetCore.Components.RenderTree.RenderBatch& batch) <0x3037e58 + 0x0001e> in <filename unknown>:0 
p.printErr @ blazor.webassembly.js:1
blazor.webassembly.js:1   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue () <0x2de1a68 + 0x000f2> in <filename unknown>:0 

 

The test control is a simplified version of a more complex control i was trying to create (mutlicolumn combobox)

If I instead use the telerikdropdown in editortemplate everything works ok

 

 
Completed
Last Updated: 17 Nov 2021 13:33 by ADMIN
Release 2.30.0
Created by: Ian
Comments: 3
Category: UI for Blazor
Type: Feature Request
2

I am implementing custom filtering by column in a data grid. The data source is very large so the filtering will be done by a stored procedure in the database. In order to avoid excessive calls to the procedure it would be great if the TextBox had a DebounceDelay property like the one in the SearchBox.

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ADMIN EDIT

While not technically useful for the grid itself (see the bottom of this thread for more ideas and information on that, a built-in feature is coming there as well), there can be benefit in adding that to the inputs (e.g., the Editor has something like that already by default because it is designed for large content).

Thus, I am reopening this so we can gauge the interest.

In the meantime, using a few lines of application code can achieve debouncing of expensive api calls. Using the OnChange or OnBlur event may also be suitable workarounds, depending on the goal you are after.

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