DxSchedulerDayViewBase.DateHeaderCellTemplate Property

Specifies the template for date header cells in the Scheduler.

Namespace: DevExpress.Blazor.Base

Assembly: DevExpress.Blazor.v24.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[Parameter]
public RenderFragment<SchedulerDateHeaderCellInfo> DateHeaderCellTemplate { get; set; }

Property Value

Type	Description
RenderFragment<SchedulerDateHeaderCellInfo>	The date header cell template.

Remarks

This template accepts a SchedulerTimelineHeaderCellInfo object as the context parameter. You can use the parameter’s Interval property to get the interval to which the cell belongs.

The following example adds weather indicator images to date header cells:

Index.razor

    @inject WeatherForecastService ForecastService

    <DxScheduler @bind-StartDate="@StartDate" DataStorage="@DataStorage" CssClass="demo-sc-size">
        <Views>
            <DxSchedulerDayView DayCount="5" ShowWorkTimeOnly="true">
                <DateHeaderCellTemplate>
                    <div style="display: flex;">
                        <div class="dxbl-sc-date-hr-wrapper" style="width: 100%;">
                            <span class="dxbl-sc-date-hr-day">@context.Interval.Start.Day</span>
                            <span class="dxbl-sc-date-hr-week">@context.Interval.Start.ToString("ddd")</span>
                        </div>
                        @{
                            string cloudCover = GetCloudCoverByDate(context.Interval.Start);
                            if(!string.IsNullOrEmpty(cloudCover)) {
                                <span class="@string.Format("scheduler-cloud-cover-icon {0}", cloudCover)"></span>
                            }
                        }
                    </div>
                </DateHeaderCellTemplate>
            </DxSchedulerDayView>
        </Views>
    </DxScheduler>

@code {
    DateTime StartDate { get; set; } = DateTime.Today;

    DxSchedulerDataStorage DataStorage = new DxSchedulerDataStorage() {
        AppointmentsSource = AppointmentCollection.GetAppointments(),
        AppointmentMappings = new DxSchedulerAppointmentMappings() {
            Type = "AppointmentType",
            Start = "StartDate",
            End = "EndDate",
            Subject = "Caption",
            AllDay = "AllDay",
            Location = "Location",
            Description = "Description",
            LabelId = "Label",
            StatusId = "Status",
            RecurrenceInfo = "Recurrence"
        }
    };

    string GetCloudCoverByDate(DateTime date) {
        foreach(WeatherForecast item in ForecastService.GetForecast())
            if(date.Day == item.Date.Day)
                return GetCloudCoverCssClass(item.CloudCover);
        return string.Empty;
    }
    string GetCloudCoverCssClass(string cloudCover) {
        switch(cloudCover) {
            case "Storm":
                return "scheduler-icon-storm";
            case "Cloudy":
                return "scheduler-icon-cloudy";
            case "Partly cloudy":
                return "scheduler-icon-partly-cloudy";
            case "Sunny":
                return "scheduler-icon-sunny";
            default:
                return string.Empty;
        }
    }
}

Appointment.cs

using System;

namespace BlazorDemo.Data {
    public class Appointment {
        public Appointment() { }

        public int AppointmentType { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime EndDate { get; set; }
        public string Caption { get; set; }
        public string Description { get; set; }
        public string Location { get; set; }
        public int? Label { get; set; }
        public int Status { get; set; }
        public bool AllDay { get; set; }
        public string Recurrence { get; set; }
        public int? ResourceId { get; set; }
        public string Resources { get; set; }
        public bool Accepted { get; set; }
    }
}

AppointmentCollection.cs

using System;
using System.Collections.Generic;

namespace BlazorDemo.Data {

    public static partial class AppointmentCollection {
        public static List<Appointment> GetAppointments() {
            DateTime date = DateTimeUtils.GetWeekStart(DateTime.Now);
            var dataSource = new List<Appointment>() {
                new Appointment {
                    Caption = "Install New Router in Dev Room",
                    StartDate = date + (new TimeSpan(0, 10, 0, 0)),
                    EndDate = date + (new TimeSpan(0, 12, 30, 0)),
                    Label = 6,
                    Status = 4
                },
                new Appointment {
                    Caption = "Upgrade Personal Computers",
                    StartDate = date + (new TimeSpan(0,  13, 0, 0)),
                    EndDate = date + (new TimeSpan(0, 15, 30, 0)),
                    Label = 1,
                    Status = 4
                },
                new Appointment {
                    Caption = "Website Redesign Plan",
                    StartDate = date + (new TimeSpan(1, 9, 30, 0)),
                    EndDate = date + (new TimeSpan(1, 12, 0, 0)),
                    Label = 1,
                    Status = 1,
                    Accepted = true
                },
                new Appointment {
                    Caption = "New Brochures",
                    StartDate = date + (new TimeSpan(1, 13, 30, 0)),
                    EndDate = date + (new TimeSpan(1, 15, 15, 0)),
                    Label = 8,
                    Status = 2,
                    Accepted = true
                },
                new Appointment {
                    Caption = "Book Flights to San Fran for Sales Trip",
                    StartDate = date + (new TimeSpan(1, 12, 0, 0)),
                    EndDate = date + (new TimeSpan(1, 13, 0, 0)),
                    AllDay = true,
                    Label = 8,
                    Status = 1
                },
                new Appointment {
                    Caption = "Approve Personal Computer Upgrade Plan",
                    StartDate = date + (new TimeSpan(2, 10, 0, 0)),
                    EndDate = date + (new TimeSpan(2, 13, 0, 0)),
                    Label = 8,
                    Status = 2
                },
                new Appointment {
                    Caption = "Final Budget Review",
                    StartDate = date + (new TimeSpan(2, 14, 0, 0)),
                    EndDate = date + (new TimeSpan(2, 16, 30, 0)),
                    Label = 1,
                    Status = 1
                },
                new Appointment {
                    Caption = "Install New Database",
                    StartDate = date + (new TimeSpan(3, 9, 45, 0)),
                    EndDate = date + (new TimeSpan(3, 11, 45, 0)),
                    Label = 6,
                    Status = 4,
                    Accepted = true
                },
                new Appointment {
                    Caption = "Approve New Online Marketing Strategy",
                    StartDate = date + (new TimeSpan(3,  12, 30, 0)),
                    EndDate = date + (new TimeSpan(3, 15, 30, 0)),
                    Label = 1,
                    Status = 1,
                    Accepted = true
                },
                new Appointment {
                    Caption = "Customer Workshop",
                    StartDate = date + (new TimeSpan(4,  11, 0, 0)),
                    EndDate = date + (new TimeSpan(4, 12, 0, 0)),
                    AllDay = true,
                    Label = 8,
                    Status = 1
                },
                new Appointment {
                    Caption = "Prepare 2021 Marketing Plan",
                    StartDate = date + (new TimeSpan(4,  10, 30, 0)),
                    EndDate = date + (new TimeSpan(4, 13, 0, 0)),
                    Label = 1,
                    Status = 1,
                    Accepted = true
                },
                new Appointment {
                    Caption = "Brochure Design Review",
                    StartDate = date + (new TimeSpan(4, 14, 0, 0)),
                    EndDate = date + (new TimeSpan(4, 16, 30, 0)),
                    Label = 1,
                    Status = 2,
                    Accepted = true
                },
                new Appointment {
                    Caption = "Create Icons for Website",
                    StartDate = date + (new TimeSpan(5, 10, 0, 0)),
                    EndDate = date + (new TimeSpan(5, 12, 30, 0)),
                    Label = 1,
                    Status = 1
                },
                new Appointment {
                    Caption = "Launch New Website",
                    StartDate = date + (new TimeSpan(5, 13, 20, 0)),
                    EndDate = date + (new TimeSpan(5, 16, 0, 0)),
                    Label = 8,
                    Status = 1
                },
                new Appointment {
                    Caption = "Upgrade Server Hardware",
                    StartDate = date + (new TimeSpan(6, 11, 0, 0)),
                    EndDate = date + (new TimeSpan(6, 13, 30, 0)),
                    Label = 8,
                    Status = 1
                }
            };
            return dataSource;
        }
    }
}

Run Demo: Scheduler - Date Header Template