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Unplanned
Last Updated: 13 Aug 2020 13:49 by ADMIN
RadPanorama (TileList) in UI for Blazor
Created by: JeffSM
Comments: 1
Category: UI for Blazor
Type: Feature Request
2
RadPanorama (TileList) in UI for Blazor
Having a component that is an equivalent of the RadPanorama (https://docs.telerik.com/devtools/winforms/controls/panorama/overview) would be nice to have in UI for Blazor. 
Completed
Last Updated: 09 Aug 2020 12:49 by ADMIN
Add support for markdown editing
Created by: Adam
Comments: 3
Category: UI for Blazor
Type: Feature Request
0
Add support for markdown editing

Overview

As a developer user, I need to add a Markdown Editor control to my Blazor UI application so that I can capture and display markdown-compliant text input.

Acceptance criteria

  • The editor control supports rich WYSIWYG editing with support for standard markdown styling including: headers, emphasis, lists, images, links, blockquotes and inline code.
  • The editor control supports raw markdown editing mode, as well as WYSIWYG (preview) mode.
  • The editor control supports raw markdown output and HTML output.

Bonus criteria

  • A paired Markdown Display control supports presentation of markdown as HTML (so that developers can store markdown in a database, for example, and convert to HTML on the client for display.
Duplicated
Last Updated: 05 Aug 2020 06:59 by ADMIN
Grid doesn't render when using filter and detail template
Created by: ben
Comments: 1
Category: UI for Blazor
Type: Bug Report
0
Grid doesn't render when using filter and detail template

Grid errors with both filtering and a detail template:

<Telerik.Blazor.Components.TelerikGrid Data="@GridData" FilterMode="Telerik.Blazor.GridFilterMode.FilterRow">

    <GridColumns>
        <Telerik.Blazor.Components.GridColumn Title="Name" Filterable="true" Field="@nameof(GridItem.Name)"></Telerik.Blazor.Components.GridColumn>
        <Telerik.Blazor.Components.GridColumn Field="@nameof(GridItem.Id)" Filterable="true" Title="Id"></Telerik.Blazor.Components.GridColumn>
    </GridColumns>

    <DetailTemplate>
            <div>Custom Template</div>
    </DetailTemplate>

</Telerik.Blazor.Components.TelerikGrid>
@code {

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

    protected override void OnInitialized()
    {
        GridData = GenerateData();
    }

    private List<GridItem> GenerateData()
    {
        List<GridItem> data = new List<GridItem>();
        for (int i = 0; i < 5; i++)
        {
            GridItem mdl = new GridItem { Id = i, Name = $"Name {i}" };
            data.Add(mdl);
        }
        return data;
    }

    public class GridItem
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

}

The grid renders correctly with either the DetailTemplate or FilterMode, but not both.

Example repo - https://github.com/kviiim/BlazorDetailTemplateGridFilterIssue

-Ben

Completed
Last Updated: 04 Aug 2020 15:04 by ADMIN
Release 2.16.0
HTML Editor component
Created by: shanthu
Comments: 0
Category: UI for Blazor
Type: Feature Request
56
HTML Editor component
Ability to edit and save HTML content
Completed
Last Updated: 04 Aug 2020 13:59 by ADMIN
Release 2.16.0
TreeList Control
Created by: ben
Comments: 8
Category: UI for Blazor
Type: Feature Request
26
TreeList Control

Looking for the TreeList control from kendo-ui to be brought over from jQuery to Blazor https://www.telerik.com/kendo-ui/treelist

 

Completed
Last Updated: 04 Aug 2020 12:01 by ADMIN
Release 2.16.0
context menu
Created by: Marcel
Comments: 4
Category: UI for Blazor
Type: Feature Request
35
context menu
Could you consider implementing a component for adding a "contextmenu" to any kind of markup/components. This is very important for more packed UIs and business applications.
Declined
Last Updated: 26 Jul 2020 10:47 by ADMIN
Problem tryng to render Blazor Treeview component
Created by: Alberto
Comments: 3
Category: UI for Blazor
Type: Bug Report
0
Problem tryng to render Blazor Treeview component

Hello,

 

im trying to render a treview but its not showing any item, im also print the results of my query on a table using a for loop and it shows the results ok , but the trevieww its not loading any data. Attached my code :

@inherits LayoutComponentBase
@inject Blazored.LocalStorage.ILocalStorageService oLocalStorage
@using MAPCRUD.Model
@using MAP.Interfaces 
@inject IMapTreeviewMenuService MapTreeviewMenuService
<TelerikRootComponent>
    <div class="sidebar">

        <NavMenu />
        @if (MapMenuData == null)
        {
            <p><em>Loading...</em></p>
        }
        else
        {
            <TelerikTreeView Data="@MapMenuData">
                <TreeViewBindings>
                    <TreeViewBinding ParentIdField="@(nameof(MapTreeviewMenu.ParentIdValue))" TextField="@(nameof(MapTreeviewMenu.Text))" UrlField="@(nameof(MapTreeviewMenu.Url))" IconField="@(nameof(MapTreeviewMenu.Icon))" ></TreeViewBinding>
                </TreeViewBindings>
            </TelerikTreeView>
            <table>
                <thead>
                    <tr>
                        <th>Text</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var menuData in MapMenuData)
                    {
                        <tr>
                            <td style="color:#fff;">@menuData.Url</td>
                        </tr>
                    }
                </tbody>
            </table>
        }
    </div>

    <div class="main">
        <div class="top-row px-4">
            <a href="https://docs.microsoft.com/aspnet/" target="_blank">About</a>
        </div>

        <div class="content px-4">
            @Body
        </div>
    </div>
</TelerikRootComponent>
@code {
    private IEnumerable<MapTreeviewMenu> MapMenuData;
    protected override async Task OnInitializedAsync()
    {
        await oLocalStorage.SetItemAsync("CollegeID", 1);
        await oLocalStorage.SetItemAsync("ApplicationID", 1);
        await oLocalStorage.SetItemAsync("RoleID", 2);
        await oLocalStorage.SetItemAsync("UserID", 1);

        int CollegeID = await oLocalStorage.GetItemAsync<int>("CollegeID");
        int ApplicationID = await oLocalStorage.GetItemAsync<int>("ApplicationID");
        int RoleID = await oLocalStorage.GetItemAsync<int>("RoleID");
        int UserID = await oLocalStorage.GetItemAsync<int>("UserID");

        MapMenuData = await MapTreeviewMenuService.GetMenuItems(CollegeID, ApplicationID, RoleID,  UserID);
    }
}
Unplanned
Last Updated: 26 Jul 2020 08:10 by ADMIN
TagCloud component
Created by: Warren
Comments: 0
Category: UI for Blazor
Type: Feature Request
3
TagCloud component
I need a display similar to the TagCloud from UI for ASP.NET AJAX https://demos.telerik.com/aspnet-ajax/tagcloud/examples/overview/defaultcs.aspx
Completed
Last Updated: 15 Jul 2020 13:42 by ADMIN
Release 2.16.0
FilterRow with DetailTemplate throws in 2.15.0
Created by: mtrejo30
Comments: 5
Category: UI for Blazor
Type: Bug Report
3
FilterRow with DetailTemplate throws in 2.15.0

 

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()

 

 

Duplicated
Last Updated: 07 Jul 2020 16:06 by ADMIN
Create a toggle switch for Blazor UI
Created by: Darryl
Comments: 3
Category: UI for Blazor
Type: Feature Request
11
Create a toggle switch for Blazor UI
It would be nice to have a toggle switch available in the UI for Blazor components. The component could support true/false and have customized text for each value.
Completed
Last Updated: 29 Jun 2020 13:50 by ADMIN
Release 2.16.0
build.config showing in project after upgrading to 2.15.0
Created by: Andrei
Comments: 1
Category: UI for Blazor
Type: Bug Report
1
build.config showing in project after upgrading to 2.15.0

build.config showing in project as a linked file......

linked path: :\Users\User\.nuget\packages\telerik.ui.for.blazor\2.15.0\contentFiles\any\netstandard2.1\build.config

content:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="LocalNuget" value="D:\Jenkins\Workspace\Blazor-Package\nugets" />
  </packageSources>
</configuration>
Duplicated
Last Updated: 25 Jun 2020 15:34 by ADMIN
Add a Color Picker component
Created by: khashayar
Comments: 0
Category: UI for Blazor
Type: Feature Request
2
Add a Color Picker component
I would like to use a Color Picker component.
Duplicated
Last Updated: 19 Jun 2020 10:19 by ADMIN
Excel document Viewer
Created by: AlekseyN
Comments: 1
Category: UI for Blazor
Type: Feature Request
1
Excel document Viewer
Please add a Excel document Viewer blazor component
Duplicated
Last Updated: 19 Jun 2020 10:18 by ADMIN
Word document Viewer
Created by: AlekseyN
Comments: 1
Category: UI for Blazor
Type: Feature Request
1
Word document Viewer
Please add a Word document Viewer blazor component
Completed
Last Updated: 18 Jun 2020 12:04 by ADMIN
Release 2.15.0
Grid loads empty wrong page if all items are deleted
Created by: Michael
Comments: 2
Category: UI for Blazor
Type: Bug Report
7
Grid loads empty wrong page if all items are deleted
It seems that when all items on a grid page are deleted, the page number is decremented but the data for that page is not loaded or displayed.
Declined
Last Updated: 16 Jun 2020 10:00 by ADMIN
Grid Inline Editing - demo database update
Created by: Lyle
Comments: 1
Category: UI for Blazor
Type: Feature Request
0
Grid Inline Editing - demo database update

Submitted on customer behalf:

This line of code is taken directly out of your https://demos.telerik.com/blazor-ui/grid/editing-inline

What kind of magic updates the actual database?

 

privatevoidUpdateItem(GridCommandEventArgs args)

{

var argsItem = args.ItemasProductBindingModel;

var index =GridData.FindIndex(i => i.ProductId== argsItem.ProductId);

if(index !=-1)

{

GridData[index]= argsItem;

}

}"


Completed
Last Updated: 27 May 2020 10:20 by ADMIN
Release 2.15.0
Calendars are missing mouseover effect for the dates
Created by: wu
Comments: 1
Category: UI for Blazor
Type: Bug Report
1
Calendars are missing mouseover effect for the dates
Affects the date pickers as well.
Unplanned
Last Updated: 24 May 2020 11:43 by ADMIN
Searchbox component
Created by: Anthony
Comments: 0
Category: UI for Blazor
Type: Feature Request
3
Searchbox component
I want to allow users to select the item by different searchable text via the corresponding display combobox - the user can select the product item by either  productID or product name, from one component rather than having several combo boxes with different TextField settings.
Duplicated
Last Updated: 20 May 2020 06:47 by ADMIN
Combobox and autocomplete floating label
Created by: Kristijan
Comments: 1
Category: UI for Blazor
Type: Feature Request
0
Combobox and autocomplete floating label
How to enable floating labels in Autocomplete and combobox, or is it in plan to make it possible?
Completed
Last Updated: 19 May 2020 16:15 by ADMIN
Release 2.14.0
Bug with grid EditorTemplate
Created by: Kostas
Comments: 1
Category: UI for Blazor
Type: Bug Report
2
Bug with grid EditorTemplate

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

 

 
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