OptionsCustomization.AllowAppointmentCreate Property

Gets or sets a value that specifies whether an end-user is allowed to create new appointments.

Namespace: DevExpress.Xpf.Scheduler

Assembly: DevExpress.Xpf.Scheduler.v18.2.dll

Declaration

C#

public UsedAppointmentType AllowAppointmentCreate { get; set; }

VB.NET

Public Property AllowAppointmentCreate As UsedAppointmentType

Property Value

Type	Description
UsedAppointmentType	A UsedAppointmentType enumeration value that specifies the type of appointment which the action can be applied to.

Available values:

Name	Description
None	The action can’t be applied to any appointments.
Recurring	The action can be applied to recurring appointments only.
NonRecurring	The action can be applied to non-recurring appointments only.
All	The action can be applied to all the appointments.
Custom	The action is applied according to the custom method specified by the corresponding AllowAppointment~ or CustomAllowAppointment~ event of the SchedulerControl.

Property Paths

You can access this nested property as listed below:

Object Type	Path to AllowAppointmentCreate
SchedulerControl	.OptionsCustomization.AllowAppointmentCreate

Remarks

Important

You are viewing documentation for the legacy WPF Scheduler control. If you’re starting a new project, we strongly recommend that you use a new control declared in the DevExpress.Xpf.Scheduling namespace. If you decide to upgrade an existing project in order to switch to the updated scheduler control, see the Migration Guidelines document.

By default, end-users are allowed to create new appointments by using UI elements such as the scheduler’s popup menu, a View’s inplace editor or the Edit Appointment dialog. Use the AllowAppointmentCreate property to control the availability of such an action for end-users, with respect to an appointment’s specific type.

Note

If the AllowAppointmentCreate property is set to UsedAppointmentType.Custom, then whether an end-user is allowed to create new appointments or not is decided in the SchedulerControl.AllowAppointmentCreate event handler.

Example

This example demonstrates how to prevent end-users from having appointments within a certain time interval (from 2 PM to 3 PM). To implement end-user restrictions, handle the SchedulerControl.AllowAppointmentCreate event to prevent end-users from creating appointments within a certain time interval and the SchedulerControl.AllowAppointmentConflicts event to prevent an existing appointment from being dragged to the same time interval:

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-set-end-user-restrictions-e2516.

MainWindow.xaml (C#)

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxsch="http://schemas.devexpress.com/winfx/2008/xaml/scheduler"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxsch:SchedulerControl Name="schedulerControl1"
                                HorizontalAlignment="Stretch" VerticalAlignment="Stretch"                               
                                AllowAppointmentConflicts="schedulerControl1_AllowAppointmentConflicts" 
                                AllowAppointmentCreate="schedulerControl1_AllowAppointmentCreate">
            <dxsch:SchedulerControl.DayView>
                <dxsch:DayView DayCount="3" />
            </dxsch:SchedulerControl.DayView>
            <dxsch:SchedulerControl.OptionsCustomization>
                <dxsch:OptionsCustomization AllowAppointmentConflicts="Custom" AllowAppointmentCreate="Custom" />
            </dxsch:SchedulerControl.OptionsCustomization>
        </dxsch:SchedulerControl>
    </Grid>
</Window>

MainWindow.xaml.cs

using System;
using System.Windows;
using DevExpress.XtraScheduler;
using DevExpress.Xpf.Scheduler;

namespace WpfApplication1 {
    public partial class MainWindow : Window {
        public MainWindow() {
            InitializeComponent();
        }
        TimeOfDayInterval restrictedArea = 
            new TimeOfDayInterval(TimeSpan.FromHours(14), TimeSpan.FromHours(15));

        private void schedulerControl1_AllowAppointmentConflicts(object sender,
            AppointmentConflictEventArgs e) {
            TimeInterval interval = e.Interval;
            if (!IsIntervalAllowed(interval))
                e.Conflicts.Add(e.AppointmentClone);
        }

        private void schedulerControl1_AllowAppointmentCreate(object sender, 
            AppointmentOperationEventArgs e) {
            e.Allow = IsIntervalAllowed(schedulerControl1.ActiveView.SelectedInterval);
        }

        private bool IsIntervalAllowed(TimeInterval interval) {
            DateTime dayStart = interval.Start.Date;
            while (dayStart < interval.End) {
                if (!IsIntervalAllowed(interval, dayStart))
                    return false;
                dayStart = dayStart.AddDays(1);
            }
            return true;
        }

        bool IsIntervalAllowed(TimeInterval interval, DateTime dayStart) {
            TimeInterval lunchTime = new TimeInterval(dayStart.Add(restrictedArea.Start), 
                dayStart.Add(restrictedArea.End));
            return !interval.IntersectsWithExcludingBounds(lunchTime);
        }        
    }
}

MainWindow.xaml (VB.NET)

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxsch="http://schemas.devexpress.com/winfx/2008/xaml/scheduler"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxsch:SchedulerControl Name="schedulerControl1"
                                HorizontalAlignment="Stretch" VerticalAlignment="Stretch"                               
                                AllowAppointmentConflicts="schedulerControl1_AllowAppointmentConflicts" 
                                AllowAppointmentCreate="schedulerControl1_AllowAppointmentCreate">
            <dxsch:SchedulerControl.DayView>
                <dxsch:DayView DayCount="3" />
            </dxsch:SchedulerControl.DayView>
            <dxsch:SchedulerControl.OptionsCustomization>
                <dxsch:OptionsCustomization AllowAppointmentConflicts="Custom" AllowAppointmentCreate="Custom" />
            </dxsch:SchedulerControl.OptionsCustomization>
        </dxsch:SchedulerControl>
    </Grid>
</Window>

MainWindow.xaml.vb

Imports Microsoft.VisualBasic
Imports System
Imports System.Windows
Imports DevExpress.XtraScheduler
Imports DevExpress.Xpf.Scheduler

Namespace WpfApplication1
    Partial Public Class MainWindow
        Inherits Window
        Public Sub New()
            InitializeComponent()
        End Sub
        Private restrictedArea As New TimeOfDayInterval(TimeSpan.FromHours(14), TimeSpan.FromHours(15))

        Private Sub schedulerControl1_AllowAppointmentConflicts(ByVal sender As Object, _
                                                          ByVal e As AppointmentConflictEventArgs)
            Dim interval As TimeInterval = e.Interval
            If (Not IsIntervalAllowed(interval)) Then
                e.Conflicts.Add(e.AppointmentClone)
            End If
        End Sub

        Private Sub schedulerControl1_AllowAppointmentCreate(ByVal sender As Object, _
                                                             ByVal e As AppointmentOperationEventArgs)
            e.Allow = IsIntervalAllowed(schedulerControl1.ActiveView.SelectedInterval)
        End Sub

        Private Function IsIntervalAllowed(ByVal interval As TimeInterval) As Boolean
            Dim dayStart As DateTime = interval.Start.Date
            Do While dayStart < interval.End
                If (Not IsIntervalAllowed(interval, dayStart)) Then
                    Return False
                End If
                dayStart = dayStart.AddDays(1)
            Loop
            Return True
        End Function

        Private Function IsIntervalAllowed(ByVal interval As TimeInterval, _
                                           ByVal dayStart As DateTime) As Boolean
            Dim lunchTime As New TimeInterval(dayStart.Add(restrictedArea.Start), _
                                              dayStart.Add(restrictedArea.End))
            Return Not interval.IntersectsWithExcludingBounds(lunchTime)
        End Function
    End Class
End Namespace

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the AllowAppointmentCreate property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-set-end-user-restrictions-e2516/CS/WpfApplication1/MainWindow.xaml#L15

<dxsch:SchedulerControl.OptionsCustomization>
    <dxsch:OptionsCustomization AllowAppointmentConflicts="Custom" AllowAppointmentCreate="Custom" />
</dxsch:SchedulerControl.OptionsCustomization>

end-user-restrictions-how-to-define-availability-intervals-for-different-resources-e4673/CS/MainWindow.xaml#L67

<dxsch:SchedulerControl.OptionsCustomization>
    <dxsch:OptionsCustomization AllowAppointmentCreate="Custom"/>
</dxsch:SchedulerControl.OptionsCustomization>