Hello,

I am currently reworking an old webapp with server-side Blazor and Telerik UI for Blazor. I noticed that TelerikDialogs kind of break the rerendering of child components if the TelerikDialog and all of its content are placed inside their own component:

<PageTitle>Home</PageTitle>

<EditWithDialog @ref="EditDialogInside"></EditWithDialog>

Where EditWithDialog is (basically) defined as follows:

<TelerikDialog @ref="Dialog" @bind-Visible="@Visible">
	<DialogTitle>
		Edit ID
	</DialogTitle>
	<DialogContent>
		<div>
			<div>TelerikDialog inside of component</div>
			<TelerikTextBox Value="@AppState.CustomerString" OnChange="@SetID" Width="300px"></TelerikTextBox>
			<TelerikButton OnClick="@GenerateID">Generate ID</TelerikButton>
		</div>
	</DialogContent>
	<DialogButtons>
		<TelerikButton OnClick="@ToggleVisible">Close</TelerikButton>
	</DialogButtons>
</TelerikDialog>

However, if the TelerikDialog is placed on a page and its content is placed inside of its own component, everything works as expected:

<PageTitle>Home</PageTitle>
<TelerikDialog @bind-Visible="@Visible">
	<DialogTitle>
		Edit ID
	</DialogTitle>
	<DialogContent>
		<div>
			<div>TelerikDialog outside of component</div>
			<EditWithoutDialog @ref="EditDialogOutside"></EditWithoutDialog>
		</div>
	</DialogContent>
	<DialogButtons>
		<TelerikButton OnClick="@ToggleEditOutside">Close</TelerikButton>
	</DialogButtons>
</TelerikDialog>

EditWithoutDialog.razor:

<TelerikTextBox Value="@AppState.CustomerString" OnChange="@SetID" Width="300px"></TelerikTextBox>
<TelerikButton OnClick="@GenerateID">Generate ID</TelerikButton>

I am using the state-container approach described here, but the problem persists when using two-way binding via parameters.

In this scenario, putting the dialog directly on the page is not a problem, but with larger applications where there's possibly multiple dialogs and a lot more content on one page, this can become very unwieldy and confusing. Considering Blazors emphasis on making components reusable, this also prevents proper use of a customized dialog component that uses the TelerikDialog as a base.

I have attached a small project that implements both versions on a single page for you to test. I have tested using both Edge and Firefox.

Hi there,

I have a TelerikGrid with a DateTime column. I use a custom FilterEditorFormat which is localizable depending on the user settings, e.g. "dd/MM/yyy HH:mm:ss". Unfortunately, any '/' in the date component is always replaced by the current culture's DateSeparator. Using any other separator works, e.g. '-'. 

Expectation: Use the FilterEditorFormat without modification, unless it's a standard format string like "g" or "D".

I already traced it down to Telerik's FormatHelper class and it seems like a quick fix.

Steps to reproduce:

• Create a TelerikGrid with a DateTime column and a FilterEditorFormat as shown above.
• If required, change the DateSeparator to anything else but '/'.
• Run and open the filter dialog

Please let me know if you need any additional information.

Best regards

Andreas

Related to PDF Viewer does not display editable Acro fields, which was fixed in version 8.0, but the problem with readonly Acro fields persisted.

This is a regression in version 7.0.0. Version 6.2.0 displays all the acro field values as expected.

Trying to upload a large file from a mobile device breaks the component.
Step to reproduce:

1. Open this REPL example on a mobile device
2. Click the "Load Data" button.

The issue can be reproduced only in version 8.0.0

Rebinding the PDF Viewer multiple times leads to an ever increasing memory usage, which can ultimately cause a browser crash.

The issue started with Telerik UI for Blazor version 8.0.0 and does not occur in 7.1.0.

Test Page: https://blazorrepl.telerik.com/QTayOxvQ090qYPsb50

The issue occurs only if the Signature is initially rendered in a container with display: none style. If I use visibility: hidden, I don't see a problem.

Real use case in which this is a problem: an accordion where the second pane is not opened.

Reproduction code: https://blazorrepl.telerik.com/QfYeuZPv28LlBmBx56.

Steps to reproduce:

1. Test signinig in the Signature #1 pane - Signature behaves properly.
2. Open the  Signature #2 pane and test signing - the scale is wrong.

The RadioGroup's FocusAsync() method does not work. To reproduce, run this example and press the button: https://docs.telerik.com/blazor-ui/components/radiogroup/overview#radiogroup-reference-and-methods

===

A possible workaround is to use JavaScript to focus the first or the selected <input> element:

@inject IJSRuntime js

<TelerikButton OnClick="@FocusRadioGroup">Focus RadioGroup</TelerikButton>

<TelerikRadioGroup Data="@RadioGroupData"
                   Class="my-radiogroup"
                   @bind-Value="@RadioGroupValue"
                   ValueField="@nameof(ListItem.Id)"
                   TextField="@nameof(ListItem.Text)">
</TelerikRadioGroup>

@* Move JavaScript code to a separate JS file in production *@
<script suppress-error="BL9992">function focusRadio(RadioGroupValue) {
        var mrg = RadioGroupValue == null ?
            document.querySelector(".my-radiogroup .k-radio-list-item input") :
            document.querySelector(`.my-radiogroup .k-radio-list-item input[value='${RadioGroupValue}']`);
        if (mrg) {
            mrg.focus()
        }
    }</script>

@code{
    private int? RadioGroupValue { get; set; }

    List<ListItem> RadioGroupData { get; set; } = new List<ListItem>() {
        new ListItem { Id = 1, Text = "Foo" },
        new ListItem { Id = 2, Text = "Bar" },
        new ListItem { Id = 3, Text = "Baz" }
    };

    private async Task FocusRadioGroup()
    {
        await Task.Delay(1);

        await js.InvokeVoidAsync("focusRadio", RadioGroupValue);
    }

    public class ListItem
    {
        public int Id { get; set; }
        public string Text { get; set; } = string.Empty;
    }
}

Hallo,

i want to Render PDF Files with the PDF Viewer Component.

The Data of the PDF is already fetched from the API when the PDF-Viewer starts Rendering the Loading animation appears and freezes.

After a few Seconds the PDF will be Rendered.

The size of the PDF File is about 5MB.

=====

TELERIK EDIT: Here is a possible workaround - replace the built-in PDF Viewer LoaderContainer with another one with a different animation Type.

<div class="pdfviewer-wrapper">
    <TelerikPdfViewer Height="600px" />

    @* With a Loading... label *@
    <TelerikLoaderContainer Class="pdf-loader-container"
                            OverlayThemeColor="@ThemeConstants.Loader.ThemeColor.Light"
                            Size="@ThemeConstants.Loader.Size.Large"
                            Visible="true" />

    @* Without a Loading... label *@
    @*<TelerikLoaderContainer Class="pdf-loader-container"
                                OverlayThemeColor="@ThemeConstants.Loader.ThemeColor.Light"
                                Visible="true">
            <Template>
                <TelerikLoader Size="@ThemeConstants.Loader.Size.Large"
                               Type="@LoaderType.Pulsing" />
            </Template>
        </TelerikLoaderContainer>*@
</div>

<style>
    .pdfviewer-wrapper {
        position: relative;
    }

    .pdf-loader-container,
    .k-pdf-viewer .k-loader-container {
        visibility: hidden;
    }

    .k-pdf-viewer:has(.k-loader-container:not([style*="none"])) + .pdf-loader-container {
        visibility: visible;
    }
</style>

@code {
    private byte[]? PdfViewerData { get; set; }
}

Hello,

related to my previous bug report.

I have a Dialog that contains a Coordinates textbox which when focused shows a Popup with a Map under that text box.

When the Form model is set in OnInitializedAsync() the Popup is shown under the anchor textbox as expected:

But when the Form model is set in OnAfterRender, the Popup is incorrectly positioned to the upper left (0, 0) corner:

The position of the popup should behave correctly regardless of where the Form model is set.

Hello,

related to my previous bug report.

When Add / Edit is clicked in the Grid, it causes a Dialog to open. 

The dialog has a Form, and if the model for that form is set through OnParametersSet, the method is called in an infinite loop, and the Dialog never gets shown.

I am using ComboBox and I want to be able to filter by two model properties. To achieve this I have implemented custom filtering through the OnRead event. Additionally, I am ordering the data to first match the results from the one property, which also is used for the TextField, and after that to match the results from the other property. However, when the results are only from the match of the second property, there is no focus.

Here is a REPL example https://blazorrepl.telerik.com/wyaMQhEN108axXJ036 

Steps to reproduce the issue:

Type "a": "Value test - ano" has the focus (the first option in the list)

Type "an": "Value test - ano" receives the focus (the first option in the list)

Type "ano": "Value test - ano" receives the focus (the first option in the list)

Type "anot": no item has focus despite the results being only "Another Value - val"

Hello,

I have a Dialog that contains a Coordinates textbox which when focused shows a Popup with a Map.

The Map does not show the tiles until I manually zoom or pan.

When the Editor is disabled, the user can still focus it by tabbing and edit the content. The issue occurs in both Div and Iframe EditMode.

Click on the textbox and press TAB:

<input type="text" tabindex="0" />

<TelerikEditor Enabled="false"
			  EditMode="@EditorEditMode.Div"
			  Height="200px" />

Creating a new WebApp project template through the extension fails to build. This is caused by incorrect icon type in the MainLayout.razor file.

To make sure the app is correctly built, the Icon type should be FontIcon.

<TelerikButton Icon="@FontIcon.Menu"
               FillMode="@ThemeConstants.Button.FillMode.Clear"
               OnClick="@( () => DrawerExpanded = !DrawerExpanded )" />

The problem is that the ValueChanged fires without an actual change in the Editor content - just click in it. I reproduce this issue in the following scenario:

• The value contains a self-closing tag.
• I click in the Editor the first time. Consecutive clicks in the Editor do not cause ValueChanged to fire.

Reproduction: https://blazorrepl.telerik.com/wfaxnvPv19jUCGhd15.