Unplanned
Last Updated: 10 Oct 2025 18:12 by Ed
Created by: Anderson
Comments: 1
Category: Scheduler
Type: Feature Request
10

I want to add more fields to the scheduler create/edit popup. Currently, this is possible by creating a custom edit form. However, this customization would be easier if the Scheduler exposed a Popup Form Template similar to the Grid.

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ADMIN EDIT

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A necessary prerequisite for exposing this is to first add a State feature in the Scheduler. This will allow programmatic control over the edited item.

Completed
Last Updated: 12 Aug 2026 12:04 by ADMIN
Release 2026 Q2

The appointments at the start of the day seem accurate. If you scroll down, the position of the appointments does not line up with the grid line for the hour that it starts at or ends at. The issue can be observed in the live demo.

 

Planned
Last Updated: 20 Aug 2026 10:11 by ADMIN
Scheduled for 2026 Q4 (Nov)

I am trying to look at the times 7pm - midnight.  But if I set the end time to midnight, I get an error that the end time has to be greater than the start time.  How do I set the timeline to show 7pm - midnight or 8pm - 2am?

I tried including the next date in the EndTime but the Scheduler does not take the date into consideration, it checks only the time portion.

Completed
Last Updated: 23 May 2025 08:31 by ADMIN
Release 9.0.0

Support the recurrence rule to create multiple appointments per time slot. Examples of such rules are:

FREQ=DAILY;BYDAY=MO,TU,WE,TH,FR,SA,SU;BYHOUR=08,09,10,11,12,13,14,15,16;BYMINUTE=50

FREQ=MINUTELY;BYMINUTE=1,16,31,46.
Completed
Last Updated: 08 Aug 2023 06:34 by ADMIN
Release 4.5.0 (08/30/2023) (R3 PI2)

Event Popup Edit: Object of type 'Telerik.Blazor.Components.Scheduler.Models.Resource' cannot be converted to type 'System.String'.

When try to click on the Save button in an Event Scheduler Popup window, an error appears.

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Object of type 'Telerik.Blazor.Components.Scheduler.Models.Resource' cannot be converted to type 'System.String'.
System.ArgumentException: Object of type 'Telerik.Blazor.Components.Scheduler.Models.Resource' cannot be converted to type 'System.String'.
   at System.RuntimeType.CheckValue(Object& value, ParameterCopyBackAction& copyBack, Binder binder, CultureInfo culture, BindingFlags invokeAttr)
   at System.Reflection.MethodBase.CheckArguments(Span`1 copyOfParameters, IntPtr* byrefParameters, Span`1 shouldCopyBack, ReadOnlySpan`1 parameters, RuntimeType[] sigTypes, Binder binder, CultureInfo culture, BindingFlags invokeAttr)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.RuntimePropertyInfo.SetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
   at System.Reflection.PropertyInfo.SetValue(Object obj, Object value, Object[] index)
   at System.Reflection.PropertyInfo.SetValue(Object obj, Object value)
   at Telerik.Blazor.Extensions.ReflectionExtensions.SetPropertyValue(Object target, String propertyName, Object value)
   at Telerik.Blazor.Components.TelerikScheduler`1.<OnFormSubmitButtonClick>d__323[[PGS50.Client.Pages.XTest.SchedulerAppointment, PGS50.Client, Version=0.5.0.0, Culture=neutral, PublicKeyToken=null]].MoveNext()
   at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)
Completed
Last Updated: 12 Aug 2026 12:03 by ADMIN
Release 2026 Q3 (Aug)

If the Start and End match exactly, the rendering of the Scheduler breaks in Day view. If another view is used, the event looks as if it is rendered on the previous day.

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ADMIN EDIT

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A possible workaround for the time being is to use a custom edit form and implement some kind of validation that prevents the user from selecting the same value for the Start and End of an event.

Unplanned
Last Updated: 04 May 2023 10:49 by Daniel
Created by: Daniel
Comments: 0
Category: Scheduler
Type: Feature Request
4

The edit popup currently does not adapt to screen size changes. Part of the edit window for the scheduler is off the screen making it unreadable on certain resolutions.

I need to make it responsive/adaptive.

Unplanned
Last Updated: 13 Jun 2023 23:13 by Neil
Created by: Lance
Comments: 1
Category: Scheduler
Type: Feature Request
3
At this stage, selecting an appointment is only possible when clicking on it. I'd like to have the ability to programmatically select an appointment.
Completed
Last Updated: 14 Nov 2024 09:27 by ADMIN
Release 7.0.0

I have a problem with Scheduler TimelineView. When there are a bit more appointments in the first resource group, the last appointment from the last group is positioned incorrectly/outside of the Scheduler component.

I think the CSS parameter "top" is calculated in the wrong mode. See the attached recording.

Completed
Last Updated: 14 Nov 2024 09:27 by ADMIN
Release 7.0.0

If the Start and/or End fields are DateTime? double-clicking on an empty slot does not open the form. This makes it impossible to create new events.

The issue occurs as of UI for Blazor 3.7.0.

Reproduction: https://blazorrepl.telerik.com/mnEHQNvl48HDc8xb30.

Completed
Last Updated: 14 Nov 2024 09:27 by ADMIN
Release 7.0.0

When you have an event that starts between 11:30pm and 12:00am - the default last slot of the Timeline view, the Scheduler throws the following error:

Error: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection
Reproduction: https://blazorrepl.telerik.com/mxOdwWlS36flJdQO37.

 

Unplanned
Last Updated: 27 Mar 2023 08:22 by Daniel
Created by: Daniel
Comments: 0
Category: Scheduler
Type: Feature Request
1

Hello,

Now that the DropDownList has an adaptive dropdown rendering, please use that instead of a plain HTML select in the Scheduler toolbar on small screens. It will be very beneficial when using dark themes.

Completed
Last Updated: 04 Apr 2024 13:44 by ADMIN
Release 2024 Q2 (May)
When creating an appointment, the Start and End editors should display the date (and time) of the slot the user clicked on.
Completed
Last Updated: 21 Apr 2023 07:30 by ADMIN
Release 4.2.0 (04/26/2023)

When the Week view of the Scheduler is selected the label of the DatePicker is incorrect. The displayed range in the label covers an extra day. e.g. in the Week view the range spans 7 days (the label show range of 8 days)



The problem can also be observed when the MultiDay view is selected - the displayed range includes one additional day.

Completed
Last Updated: 20 Mar 2023 15:26 by ADMIN
Release 4.2.0 (26/04/2023)
Created by: n/a
Comments: 0
Category: Scheduler
Type: Bug Report
2
By design, the appointments should be resized and repositioned upon browser resize. As of UI for Blazor 3.7., the appointments are not properly scaled upon browser resize.
Unplanned
Last Updated: 06 Mar 2023 14:06 by Dario
I'd like to know when the user deletes an occurrence.
Duplicated
Last Updated: 09 Mar 2023 10:00 by ADMIN
Created by: Joris
Comments: 1
Category: Scheduler
Type: Feature Request
2

Hello,

Sadly it appears there is no current time marker feature available for the scheduler.

Any chance that this could be implemented in the future?

Kind greetings

Completed
Last Updated: 14 Nov 2024 09:27 by ADMIN
Release 7.0.0

When using Vertical Grouping by multiple resources and Timeline View, the group rows without appointments do not have min-height as the rest of the group rows. Thus, they appear shorter which causes an offset of the events on the next rows.

Steps to reproduce:

  1. Load Timeline View Demo
  2. Delete Charlie's event in Small meeting room

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ADMIN EDIT

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A possible workaround for the time being is to set min-height to all rows. Apply this style only when Timeline view is selected, so this does not break the rendering of the other views.

Example: https://blazorrepl.telerik.com/mHYmwsOt30fjTZ6a32.

 

Completed
Last Updated: 14 Nov 2024 09:28 by ADMIN
Release 7.0.0

Scheduler cells are not aligned correctly in the Timeline View when Bootstrap Theme is used.

To reproduce the problem:

 1. Open the following Scheduler Demo:
 https://demos.telerik.com/blazor-ui/scheduler/overview

 2. Select the Bootstrap Theme

 3. Open the Timeline View

Unplanned
Last Updated: 26 Jan 2023 13:17 by Joshua

I am trying to create a timeline component that is just using week numbers for the current year.