Questions on UI for Blazor Forum

12 answers

2.0K+ views

Hi,

can specific items in the DropDownList be disabled? I.e. non-selectable and visually marked as disabled?

Scenario: we sometimes face the issue of having obsolete objects being referenced. Those obsolete objects may be marked as "deleted" in the database but are still referenced and need to be displayed if already referenced, but are not allowed to be selected anymore.

How would one do this with Blazor and Telerik's components?

Regards
Kasimier Buchcik

DropDownList

answered on 02 Jul 2020

1 answer

440 views

Slow performance with 350 options, please add Virtual Scrolling Property

Combobox,Multiselect,Dropdown (all this TelerikSelectBase Controls) has a slow performace with 350 options. It opens and closes slowly. It would be nice to have Virtual Scrolling like the grid so it can perform better.

ComboBox

answered on 02 Jul 2020

2 answers

1.5K+ views

[Solved] DropDownList - OnChange not firing when selecting the "default" entry

Hi,

when setting DropDownList's DefaultText (e.g. to a "none" string) then the component displays an additional entry which stands for a null/default value (in other words: it acts as a clear button).

But the OnChange event does not fire when selecting that entry.

Using: Telerik.UI.for.Blazor.Trial (2.14.1)

Regards
Kasimier Buchcik

DropDownList

answered on 02 Jul 2020

2 answers

339 views

TimePicker resets when selecting a new time

Hi

The problem I am having is, that when I select a HOUR in the list of hours, by clicking on it with the mouse, the hour is updated shortly and then reset to the hours of the DateTime send into the control. That is, the hour in the text box is set for the selected one, and then reset half a second later. The dropdown with hours 'rolls' back to the initial hour. There is the same problem for the Minutes and Seconds

When trying the component on the Telerik Blazor DEMO site, that works just fine, but in my solution (running on my own PC which is setup for the Danish Language and Regional settings) it does as above. My demo component for testing this is quite simple:

@page "/CodeSamples"

<label for="timepicker">Time:</label>
<TelerikTimePicker Min="@Min" Max="@Max" Format="HH:mm:ss" @bind-Value="@selectedTime" Id="timepicker"></TelerikTimePicker>

<div class="pt-4">The selected time is: @selectedTime?.ToLongTimeString()</div>

@code {
public DateTime Min = new DateTime(1900, 1, 1, 10, 0, 0);
public DateTime Max = new DateTime(1900, 1, 1, 20, 0, 0);
private DateTime? selectedTime = DateTime.Now;
}

Can you help me? :-)

TimePicker

answered on 01 Jul 2020

2 answers

3.6K+ views

Could not find 'TelerikBlazor' in 'window'

Tried this both from creating a new Telerik Blazor project and adding Telerik UI for Blazor to an existing project. Server-Side Blazor projects. Both produce the same results. Version 2.1.1 when hitting the page with the Telerik Blazor Grid, the Output window fills with errors the first of which is:

Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer: Warning: Unhandled exception rendering component: Could not find 'TelerikBlazor' in 'window'.

Error: Could not find 'TelerikBlazor' in 'window'.

at Anonymous function (https://localhost:44365/_framework/blazor.server.js:8:28059)

at Array.prototype.forEach (native code)

at p (https://localhost:44365/_framework/blazor.server.js:8:28010)

at Anonymous function (https://localhost:44365/_framework/blazor.server.js:8:28731)

at Promise (native code)

at e.jsCallDispatcher.beginInvokeJSFromDotNet (https://localhost:44365/_framework/blazor.server.js:8:28701)

at Anonymous function (https://localhost:44365/_framework/blazor.server.js:1:19139)

at Array.prototype.forEach (native code)

at e.prototype.invokeClientMethod (https://localhost:44365/_framework/blazor.server.js:1:19117)

at e.prototype.processIncomingData (https://localhost:44365/_framework/blazor.server.js:1:17160)

Grid

answered on 01 Jul 2020

1 answer

519 views

Weeknumbers in DatePicker

Is it possible to show the weeknumbers in a DatePicker?

We work most of the time with weeknumbers instead of a date so people know they have to select e.g. the monday of week 27 instead of 29-06-2020

Thanks,

Maurice

DatePicker

answered on 30 Jun 2020

3 answers

200 views

Telerik pop ups

Hello,
i was hoping that you could add a property to elements which have pop ups so we can assign a class to their pop ups like PopupWidth you could add PopupClass this helps a lot with customization
in my situation im trying to change style of TelerikDropDownList to make a color picker but i cant customize popup very well
or maybe if there was a way to use popup functionality with our own ui

General Discussions

answered on 29 Jun 2020

1 answer

432 views

Click on Calendar event in Blazor Server app

Hello,

I need to update some greed each time a user clicks on calendar. Now we have two events in calendar.

The OnChange event fires on date input focus loses, so it not helps me.

The ValueChanged works fine but if I type date manually then I lose date input focus on grid update and cannot finish typing. Like, I try to change 6/1/2020 to 6/11/2020. It works if I fast enough but I would prefer to disable the date input field and have the calendar available only. Is it possible to do?

Another event OnClick on calendar would help but looks like it is not exist.

Thanks.

DatePicker

answered on 28 Jun 2020

2 answers

313 views

Generically typed context in templates

Hi,

I noticed that the context variable in templates is of type object (e.g. in the drop-down-list, grid-column).
Is this due to historical reasons? Could this be changed to a generically typed context?

Regards

Kasimier Buchcik

General Discussions