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Virtual Scrolling
With virtual scrolling, you can improve the overall performance of your application and reduce load times when our Scheduler UI component is bound to a large data set. When virtual scrolling is enabled, our Scheduler only renders visible appointments. When an appointment leaves the viewport, the Scheduler removes it from the DOM. The data set in this demo contains 100 groups with 9 appointments each.
To enable virtual scrolling mode, set the scrolling.mode property to "virtual".
Virtual scrolling support is available in the following Scheduler views: "day", "week", and "workWeek".
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you!
We appreciate your feedback.
We appreciate your feedback.
@(Html.DevExtreme().Scheduler()
.Height(600)
.Views(views =>
{
views.Add()
.Name("2 Days")
.Type(SchedulerViewType.Day)
.GroupOrientation(Orientation.Vertical)
.IntervalCount(2);
views.Add()
.Name("3 Days")
.Type(SchedulerViewType.Day)
.GroupOrientation(Orientation.Vertical)
.IntervalCount(3);
views.Add()
.Name("Work Week")
.Type(SchedulerViewType.Day)
.GroupOrientation(Orientation.Vertical);
})
.ElementAttr("class", "scheduler")
.StartDayHour(9)
.EndDayHour(18)
.CurrentView("3 Days")
.Scrolling(config => { config.Mode(SchedulerScrollingMode.Virtual); })
.ShowAllDayPanel(false)
.Groups(new[] { "resourceId" })
.CurrentDate(new DateTime(2021, 9, 6))
)
<script>
var resourcesAmount = 100;
var colors = [
'rgba(88, 116, 255, 0.8)',
'rgba(234, 128, 252, 0.8)',
'rgba(198, 86, 144, 0.85)',
'rgba(254, 194, 0, 0.7)'
];
var dataSet = [{
text: "Website Re-Design Plan",
startDate: new Date(2021, 8, 6, 9, 30),
endDate: new Date(2021, 8, 6, 11, 30)
}, {
text: "Book Flights to San Fran for Sales Trip",
startDate: new Date(2021, 8, 6, 12, 0),
endDate: new Date(2021, 8, 6, 13, 0),
allDay: true
}, {
text: "Install New Router in Dev Room",
startDate: new Date(2021, 8, 6, 14, 30),
endDate: new Date(2021, 8, 6, 15, 30)
}, {
text: "Approve Personal Computer Upgrade Plan",
startDate: new Date(2021, 8, 7, 10, 0),
endDate: new Date(2021, 8, 7, 11, 0)
}, {
text: "Final Budget Review",
startDate: new Date(2021, 8, 7, 12, 0),
endDate: new Date(2021, 8, 7, 13, 35)
}, {
text: "New Brochures",
startDate: new Date(2021, 8, 7, 14, 30),
endDate: new Date(2021, 8, 7, 15, 45)
}, {
text: "Install New Database",
startDate: new Date(2021, 8, 8, 9, 45),
endDate: new Date(2021, 8, 8, 11, 15)
}, {
text: "Approve New Online Marketing Strategy",
startDate: new Date(2021, 8, 8, 12, 0),
endDate: new Date(2021, 8, 8, 14, 0)
}, {
text: "Upgrade Personal Computers",
startDate: new Date(2021, 8, 8, 15, 15),
endDate: new Date(2021, 8, 8, 16, 30)
}, {
text: "Customer Workshop",
startDate: new Date(2021, 8, 9, 11, 0),
endDate: new Date(2021, 8, 9, 12, 0),
allDay: true
}, {
text: "Prepare 2015 Marketing Plan",
startDate: new Date(2021, 8, 9, 11, 0),
endDate: new Date(2021, 8, 9, 13, 30)
}, {
text: "Brochure Design Review",
startDate: new Date(2021, 8, 9, 14, 0),
endDate: new Date(2021, 8, 9, 15, 30)
}, {
text: "Create Icons for Website",
startDate: new Date(2021, 8, 10, 10, 0),
endDate: new Date(2021, 8, 10, 11, 30)
}, {
text: "Upgrade Server Hardware",
startDate: new Date(2021, 8, 10, 14, 30),
endDate: new Date(2021, 8, 10, 16, 0)
}, {
text: "Submit New Website Design",
startDate: new Date(2021, 8, 10, 16, 30),
endDate: new Date(2021, 8, 10, 18, 0)
}, {
text: "Launch New Website",
startDate: new Date(2021, 8, 10, 12, 20),
endDate: new Date(2021, 8, 10, 14, 0)
}];
function generateResources() {
var resources = [];
for (var i = 0; i < resourcesAmount; ++i) {
var color = colors[i % colors.length];
resources.push({
id: i,
text: `Resource ${i}`,
color: color
});
}
return resources;
};
function generateAppointments() {
var data = [];
for (var resourceId = 0; resourceId < resourcesAmount; ++resourceId) {
dataSet.forEach(function (item) {
data.push({
text: item.text,
startDate: item.startDate,
endDate: item.endDate,
resourceId
});
});
}
return data;
}
function getScheduler() {
return $(".scheduler").dxScheduler("instance");
}
$(function () {
const scheduler = getScheduler();
scheduler.option("dataSource", generateAppointments());
scheduler.option("resources", [{
fieldExpr: "resourceId",
dataSource: generateResources()
}]);
})
</script>
using DevExtreme.MVC.Demos.Models.SampleData;
using DevExtreme.MVC.Demos.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
namespace DevExtreme.MVC.Demos.Controllers {
public class SchedulerController : Controller {
public ActionResult VirtualScrolling() {
return View();
}
}
}