Backend API
@model IEnumerable<DevExtreme.NETCore.Demos.Models.DisableDatesAppointment>
@(Html.DevExtreme().Scheduler()
.ID("scheduler")
.DataSource(Model)
.TextExpr("Text")
.StartDateExpr("StartDate")
.EndDateExpr("EndDate")
.Views(new[] { SchedulerViewType.WorkWeek, SchedulerViewType.Month })
.CurrentView(SchedulerViewType.WorkWeek)
.CurrentDate(new DateTime(2021, 4, 27))
.FirstDayOfWeek(FirstDayOfWeek.Sunday)
.StartDayHour(9)
.EndDayHour(19)
.ShowAllDayPanel(false)
.Height(730)
.DataCellTemplate(new JS("dataCellTemplate"))
.DateCellTemplate(new JS("dateCellTemplate"))
.TimeCellTemplate(new JS("timeCellTemplate"))
.OnContentReady("onContentReady")
.OnAppointmentFormOpening("onAppointmentFormOpening")
.OnAppointmentAdding("onAppointmentAdding")
.OnAppointmentUpdating("onAppointmentUpdating")
)
<script>
var dinnerTime = { from: 12, to: 13 };
var holidays = [
new Date(2021, 3, 29),
new Date(2021, 5, 6)
];
var ariaDescription = () => {
const disabledDates = holidays
.filter((date) => !isWeekend(date))
.map((date) => new Date(date).toLocaleDateString('en-US', {
weekday: 'long',
year: 'numeric',
month: 'long',
day: 'numeric',
})
);
if (disabledDates?.length === 1) {
return `${disabledDates} is a disabled date`;
}
if (disabledDates?.length > 1) {
return `${disabledDates.join(', ')} are disabled dates`;
}
};
function dataCellTemplate(itemData, itemIndex, itemElement) {
var date = itemData.startDate;
var isDisabled = isHoliday(date) || isWeekend(date);
var element = $('<div />');
if (isDisabled) {
element.addClass('disable-date');
} else if (isDinner(date)) {
element.addClass('dinner');
}
return itemElement.append(element);
}
function dateCellTemplate(itemData, itemIndex, itemElement) {
var element = $('<div>' + itemData.text + '</div>');
if (isWeekend(itemData.date)) {
element.addClass('disable-date');
}
return itemElement.append(element);
}
function timeCellTemplate(itemData, itemIndex, itemElement) {
var element = $('<div>' + itemData.text + '</div>');
var date = itemData.date;
if (isDinner(date)) {
element.addClass('dinner');
}
if (hasCoffeeCupIcon(date)) {
element.append('<div class="cafe" />');
}
return itemElement.append(element);
}
function onContentReady(e) {
setComponentAria(e.component?.$element());
}
function onAppointmentFormOpening(e) {
var startDate = new Date(e.appointmentData.StartDate);
if(!isValidAppointmentDate(startDate)) {
e.cancel = true;
notifyDisableDate();
}
applyDisableDatesToDateEditors(e.form);
}
function onAppointmentAdding(e) {
if(!isValidAppointment(e.component, e.appointmentData)) {
e.cancel = true;
notifyDisableDate();
}
}
function onAppointmentUpdating(e) {
if(!isValidAppointment(e.component, e.newData)) {
e.cancel = true;
notifyDisableDate();
}
}
function notifyDisableDate() {
DevExpress.ui.notify("This date is disabled", "warning", 500);
}
function isValidAppointment(component, appointmentData) {
var startDate = new Date(appointmentData.StartDate);
var endDate = new Date(appointmentData.EndDate);
var cellDuration = component.option('cellDuration');
return isValidAppointmentInterval(startDate, endDate, cellDuration);
}
function isValidAppointmentInterval(startDate, endDate, cellDuration) {
var edgeEndDate = new Date(endDate.getTime() - 1);
if (!isValidAppointmentDate(edgeEndDate)) {
return false;
}
var durationInMs = cellDuration * 60 * 1000;
var date = startDate;
while (date <= endDate) {
if (!isValidAppointmentDate(date)) {
return false;
}
var newDateTime = date.getTime() + durationInMs - 1;
date.setTime(newDateTime);
}
return true;
}
function isValidAppointmentDate(date) {
return !isHoliday(date) && !isDinner(date) && !isWeekend(date);
}
function isHoliday(date) {
var localeDate = date.toLocaleDateString();
return holidays.filter(function(holiday) {
return holiday.toLocaleDateString() === localeDate;
}).length > 0;
}
function isWeekend(date) {
var day = date.getDay();
return day === 0 || day === 6;
}
function isDinner(date) {
var hours = date.getHours();
return hours >= dinnerTime.from && hours < dinnerTime.to;
}
function hasCoffeeCupIcon(date) {
var hours = date.getHours();
var minutes = date.getMinutes();
return hours === dinnerTime.from && minutes === 0;
}
function applyDisableDatesToDateEditors(form) {
var startDateEditor = form.getEditor('StartDate');
startDateEditor.option('disabledDates', holidays);
var endDateEditor = form.getEditor('EndDate');
endDateEditor.option('disabledDates', holidays);
}
function setComponentAria(element) {
const prevAria = element?.attr('aria-label') || '';
element?.attr('aria-label', `${prevAria} ${ariaDescription()}`);
}
</script>
using Microsoft.AspNetCore.Mvc;
using DevExtreme.NETCore.Demos.Models.SampleData;
using DevExtreme.NETCore.Demos.ViewModels;
namespace DevExtreme.NETCore.Demos.Controllers {
public class SchedulerController : Controller {
public ActionResult CellTemplates() {
return View(SampleData.AppointmentsWorkHours);
}
}
}
using System;
using System.Text.Json.Serialization;
namespace DevExtreme.NETCore.Demos.Models {
public class Appointment {
[JsonPropertyName("AppointmentId")]
public int AppointmentId { get; set; }
[JsonPropertyName("Text")]
public string Text { get; set; }
[JsonPropertyName("Description")]
public string Description { get; set; }
[JsonPropertyName("StartDate")]
public string StartDate { get; set; }
[JsonPropertyName("EndDate")]
public string EndDate { get; set; }
[JsonPropertyName("AllDay")]
public bool AllDay { get; set; }
[JsonPropertyName("RecurrenceRule")]
public string RecurrenceRule { get; set; }
[JsonPropertyName("RecurrenceException")]
public string RecurrenceException { get; set; }
}
public class DisableDatesAppointment {
[JsonPropertyName("AppointmentId")]
public int AppointmentId { get; set; }
[JsonPropertyName("Text")]
public string Text { get; set; }
[JsonPropertyName("Description")]
public string Description { get; set; }
[JsonPropertyName("StartDate")]
public DateTime StartDate { get; set; }
[JsonPropertyName("EndDate")]
public DateTime EndDate { get; set; }
[JsonPropertyName("AllDay")]
public bool AllDay { get; set; }
[JsonPropertyName("RecurrenceRule")]
public string RecurrenceRule { get; set; }
[JsonPropertyName("RecurrenceException")]
public string RecurrenceException { get; set; }
}
}
using System;
using System.Collections.Generic;
using System.Linq;
namespace DevExtreme.NETCore.Demos.Models.SampleData {
public partial class SampleData {
public static readonly IEnumerable<DisableDatesAppointment> AppointmentsWorkHours = new[] {
new DisableDatesAppointment {
Text = "Website Re-Design Plan",
StartDate = new DateTime(2021, 4, 26, 9, 30, 0),
EndDate = new DateTime(2021, 4, 26, 11, 30, 0)
},
new DisableDatesAppointment {
Text = "Install New Router in Dev Room",
StartDate = new DateTime(2021, 4, 26, 13, 0, 0),
EndDate = new DateTime(2021, 4, 26, 14, 0, 0)
},
new DisableDatesAppointment {
Text = "Approve Personal Computer Upgrade Plan",
StartDate = new DateTime(2021, 4, 27, 10, 0, 0),
EndDate = new DateTime(2021, 4, 27, 11, 0, 0)
},
new DisableDatesAppointment {
Text = "Final Budget Review",
StartDate = new DateTime(2021, 4, 27, 13, 30, 0),
EndDate = new DateTime(2021, 4, 27, 15, 0, 0)
},
new DisableDatesAppointment {
Text = "New Brochures",
StartDate = new DateTime(2021, 4, 26, 15, 0, 0),
EndDate = new DateTime(2021, 4, 26, 16, 15, 0)
},
new DisableDatesAppointment {
Text = "Install New Database",
StartDate = new DateTime(2021, 4, 28, 9, 45, 0),
EndDate = new DateTime(2021, 4, 28, 12, 0, 0)
},
new DisableDatesAppointment {
Text = "Approve New Online Marketing Strategy",
StartDate = new DateTime(2021, 4, 28, 14, 30, 0),
EndDate = new DateTime(2021, 4, 28, 16, 30, 0)
},
new DisableDatesAppointment {
Text = "Upgrade Personal Computers",
StartDate = new DateTime(2021, 4, 27, 15, 30, 0),
EndDate = new DateTime(2021, 4, 27, 16, 45, 0)
},
new DisableDatesAppointment {
Text = "Prepare 2021 Marketing Plan",
StartDate = new DateTime(2021, 5, 3, 13, 0, 0),
EndDate = new DateTime(2021, 5, 3, 15, 0, 0)
},
new DisableDatesAppointment {
Text = "Brochure Design Review",
StartDate = new DateTime(2021, 5, 4, 15, 30, 0),
EndDate = new DateTime(2021, 5, 5, 0, 0, 0)
},
new DisableDatesAppointment {
Text = "Create Icons for Website",
StartDate = new DateTime(2021, 4, 30, 10, 0, 0),
EndDate = new DateTime(2021, 4, 30, 12, 0, 0)
},
new DisableDatesAppointment {
Text = "Upgrade Server Hardware",
StartDate = new DateTime(2021, 4, 30, 16, 30, 0),
EndDate = new DateTime(2021, 4, 30, 18, 0, 0)
},
new DisableDatesAppointment {
Text = "Submit New Website Design",
StartDate = new DateTime(2021, 5, 5, 10, 0, 0),
EndDate = new DateTime(2021, 5, 5, 11, 30, 0)
},
new DisableDatesAppointment {
Text = "Launch New Website",
StartDate = new DateTime(2021, 4, 30, 14, 30, 0),
EndDate = new DateTime(2021, 4, 30, 16, 10, 0)
}
};
}
}
@-moz-document url-prefix() {
.dx-scheduler-work-space-month .dx-scheduler-date-table-cell {
position: relative;
}
.dx-scheduler-work-space-month .dx-scheduler-date-table-cell .disable-date {
position: absolute;
width: 100%;
height: 100%;
}
}
.disable-date,
.dinner {
height: 100%;
width: 100%;
}
.disable-date {
background-image:
repeating-linear-gradient(
135deg,
rgba(247, 234, 224, 1),
rgba(247, 234, 224, 1) 4px,
transparent 4px,
transparent 9px
);
color: rgba(178, 74, 0, 1);
}
.dx-scheduler-header-panel-cell .disable-date {
display: flex;
flex-direction: column;
justify-content: center;
}
.dx-theme-fluent .dx-scheduler-header-panel-cell .disable-date,
.dx-theme-material .dx-scheduler-header-panel-cell .disable-date {
flex-direction: row;
align-items: flex-end;
justify-content: initial;
}
.dinner {
background: #FBF1EB;
}
.dx-scheduler-time-panel-cell .dinner {
color: #C25100;
font-weight: 400;
background: transparent;
}
.dx-draggable {
cursor: auto;
}
td.dx-scheduler-time-panel-cell .dinner .cafe {
height: 200%;
width: 100%;
left: 50%;
-webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0V0z" fill="none"/><path d="M20 3H4v10c0 2.21 1.79 4 4 4h6c2.21 0 4-1.79 4-4v-3h2c1.11 0 2-.9 2-2V5c0-1.11-.89-2-2-2zm0 5h-2V5h2v3zM4 19h16v2H4z"/></svg>');
-webkit-mask-repeat: no-repeat;
-webkit-mask-position-y: 50%;
-webkit-mask-position-x: 100%;
margin-top: -4px;
background-color: #C25100;
}
.dx-scheduler-date-table-cell {
padding: 0;
opacity: 1;
}
@media all and (-ms-high-contrast:none)
{
td.dx-scheduler-time-panel-cell .dinner .cafe {
background-color: transparent;
}
}
To implement this functionality in your application, follow the steps below:
-
Implement custom date/time validation functions
These functions should check whether a date or time is available. This demo includes the date/time validation functions listed below. In your application, they can be different.isValidAppointment
Prepares data and begins validation.isValidAppointmentInterval
Validates a date/time interval.isValidAppointmentDate
Calls theisHoliday,isWeekend, andisDinnerfunctions.isHoliday/isWeekend/isDinner
Check whether a date/time interval is a holiday, a weekend, or dinner time.
-
Validate appointments before they are created or updated
Before an appointment is created or updated, the Scheduler executes the onAppointmentAdding and onAppointmentUpdating functions. Use them to start validation. If a date or time is invalid,cancelthe creation or update. Implement the same logic in the onAppointmentFormOpening function so that users cannot open the appointment details form for a disabled date or time. -
Customize the appointment details form
The appointment details form includes two calendars that allow users to select an appointment's start and end date/time. You should also disable dates in these calendars. Review theapplyDisableDatesToDateEditorsfunction to see how this is done. Call this function from onAppointmentFormOpening. -
Customize the timetable appearance
Use templates to customize the appearance of data cells (dataCellTemplate), time cells (timeCellTemplate), and date cells (dateCellTemplate). In this demo, date cell customization is visible only in the Month view. To switch to this view, use the view switcher in the Scheduler's upper right corner.