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AppointmentViewInfo.Subject Property

Gets or sets the subject text displayed within the appointment.

Namespace: DevExpress.Xpf.Scheduler.Drawing

Assembly: DevExpress.Xpf.Scheduler.v22.2.dll

NuGet Package: DevExpress.Wpf.Scheduler

Declaration

public virtual string Subject { get; set; }

Property Value

Type Description
String

A String value that specifies the text of the appointment subject.

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.

Example

Tip

A complete sample project is available in the DevExpress Code Examples database at https://supportcenter.devexpress.com/ticket/details/e2999/how-to-customize-appointment-tooltips.

This example demonstrates how to use the AppointmentViewInfo.Subject, AppointmentViewInfo.Location, AppointmentViewInfo.Description, AppointmentViewInfo.CustomViewInfo, SchedulerViewBase.AppointmentToolTipContentTemplate properties and SchedulerControl.AppointmentViewInfoCustomizing event to define and apply a custom template for showing an appointment subject, location, description and resource images within appointment tooltips.

using System.IO;
using System.Data;
using System.Windows;
using System.Data.OleDb;
using DevExpress.Xpf.Core.Native;
using System.Collections.Generic;
using System.Windows.Media.Imaging;
using DevExpress.XtraScheduler;
using DevExpress.Xpf.Scheduler;
using DevExpress.Xpf.Scheduler.Drawing;

namespace WpfApplication1 {
public partial class MainWindow : Window {
    Dictionary<Resource, BitmapImage> resourceImages = new Dictionary<Resource, BitmapImage>();

    public MainWindow() {
        InitializeComponent();

        // ...

        DataTemplate template = (DataTemplate)this.FindResource("AppointmentTooltipContentTemplate");
        schedulerControl1.WorkWeekView.AppointmentToolTipContentTemplate = template;

    }

    private void schedulerControl1_AppointmentViewInfoCustomizing(object sender, 
                                                                AppointmentViewInfoCustomizingEventArgs e) {
    AppointmentViewInfo viewInfo = e.ViewInfo;
    Resource resource = schedulerControl1.Storage.Resources.GetResourceById(viewInfo.Appointment.ResourceId);
    if (resource == Resource.Empty || resource.Image == null)
        viewInfo.CustomViewInfo = null;
    else {
        if (!this.resourceImages.ContainsKey(resource))
        this.resourceImages[resource] = ImageHelper.CreateImageFromStream(ConvertImageToMemoryStream(resource.Image));

        viewInfo.CustomViewInfo = this.resourceImages[resource];
    }
    }

    public static MemoryStream ConvertImageToMemoryStream(System.Drawing.Image img) {
        var ms = new MemoryStream();
        img.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        return ms;
    }

}
}

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Subject 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.

See Also