Events in Blazor Scheduler

This section lists the Scheduler component events that are triggered for the appropriate Scheduler actions.

Provide the events to the Scheduler by using the ScheduleEvents tag. When using Scheduler events, TValue must also be provided in the ScheduleEvents tag.

ActionCompleted

ActionCompleted event triggers on successful completion of the Scheduler actions.

The action types that can be checked within the ActionCompleted event are as follows.

ActionType	Description
EventCreate	Triggers once event is created.
EventChange	Triggers once event is updated.
EventRemove	Triggers once event is deleted.
DateNavigate	Triggers once date navigation is performed.
ViewNavigate	Triggers once view navigation is performed.
ResourceExpand	Triggers once resource is expanded in timeline views.
ResourceCollapse	Triggers once resource is collapsed in timeline views.

@using Syncfusion.Blazor.Schedule

<p style="color:green; font-size:20px">@Status</p>
<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" ActionCompleted="OnActionCompleted"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    string Status = "";
    public void OnActionCompleted(ActionEventArgs<AppointmentData> args)
    {
        if (args.ActionType == ActionType.EventCreate || args.ActionType == ActionType.EventChange)
        {
            Status = "Success";   // Status becomes success on event create and update.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

Created

Created event triggers after the Scheduler component is created.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" Created="OnCreated"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnCreated()
    {
        // Add custom logic here.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

DataBinding

DataBinding event triggers before the data is bound to the Scheduler.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" DataBinding="DataBindHandler"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void DataBindHandler(DataBindingEventArgs<AppointmentData> args)
    {
        // Triggers before the data binds to the Scheduler while performing CRUD actions, view navigation, and date navigation.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

DataBound

DataBound event triggers once the event data is bound to the Scheduler.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" @ref="@ScheduleRef" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" DataBound="OnDataBound"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    SfSchedule<AppointmentData> ScheduleRef;
    public async Task OnDataBound(DataBoundEventArgs<AppointmentData> args)
    {
        List<AppointmentData> eventCollection = await ScheduleRef.GetEvents();   // You can get the entire appointment collection in the eventCollection variable.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

Destroyed

Destroyed event triggers when the Scheduler component is destroyed.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" Destroyed="OnDestroyed"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnDestroyed()
    {
        //Here you can customize your code
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

Dragged

Dragged event triggers when appointment dragging is stopped.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" @ref="@ScheduleObj" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" Dragged="OnDragged"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    SfSchedule<AppointmentData> ScheduleObj;
    public async Task OnDragged(DragEventArgs<AppointmentData> args)
    {
        await ScheduleObj.OpenEditorAsync(args.Data, CurrentAction.Save);   // Open the editor window when dragging stops.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

EventRendered

EventRendered event triggers before each event is rendered on the Scheduler user interface.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" EventRendered="OnEventRendered"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>
<style>
    .e-schedule .e-vertical-view .e-all-day-appointment-wrapper .e-appointment.custom-class,
    .e-schedule .e-vertical-view .e-day-wrapper .e-appointment.custom-class,
    .e-schedule .e-month-view .e-appointment.custom-class {
        background: yellow;
        color: red;
    }
</style>

@code{
    private DateTime CurrentDate = new DateTime(2020, 3, 10);
    public string[] CustomClass = { "custom-class" };
    public void OnEventRendered(EventRenderedArgs<AppointmentData> args)
    {
        args.CssClasses = new List<string>(CustomClass);
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

MoreEventsClicked

MoreEventsClicked event triggers when the more events indicator is clicked.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate" @bind-CurrentView="@CurrentView">
    <ScheduleEvents TValue="AppointmentData" MoreEventsClicked="OnMoreEventsClick"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    View CurrentView = View.Month;
    public void OnMoreEventsClick(MoreEventsClickArgs args)
    {
        args.Cancel = true;   // Prevent showing appointments in the more indicator.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting In", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) },
        new AppointmentData { Id = 2, Subject = "Conference", StartTime = new DateTime(2020, 3, 11, 9, 30, 0) , EndTime = new DateTime(2020, 3, 11, 12, 0, 0) },
        new AppointmentData { Id = 3, Subject = "Meeting Out", StartTime = new DateTime(2020, 3, 11, 9, 30, 0) , EndTime = new DateTime(2020, 3, 11, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

Navigating

Navigating event triggers before date or view navigation takes place in Scheduler.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" Navigating="OnNavigating"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnNavigating(NavigatingEventArgs args)
    {
        if (args.ActionType == ActionType.DateNavigate) {
            args.Cancel = true;   // Prevent date navigation.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnActionBegin

OnActionBegin event triggers at the beginning of every Scheduler action.

The request types that can be checked within the OnActionBegin event are as follows.

ActionType	Description
EventCreate	Triggers when creating a new event.
EventChange	Triggers when updating an event.
EventRemove	Triggers when deleting an event.
DateNavigate	Triggers while performing date navigation.
ViewNavigate	Triggers while performing view navigation.
ResourceExpand	Triggers while expanding a resource in timeline views.
ViewNavigate	Triggers while collapsing a resource in timeline views.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnActionBegin="OnActionBegin"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnActionBegin(ActionEventArgs<AppointmentData> args)
    {
        if (args.ActionType == ActionType.EventRemove)   // Check whether the request type is event delete.
        {
            args.Cancel = true;   // Prevent appointment deletion.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnActionFailure

OnActionFailure event triggers when a Scheduler action fails or is interrupted.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnActionFailure="OnActionFailure"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnActionFailure(ActionEventArgs<AppointmentData> args)
    {
        // args.Error contains the failure details.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnCellClick

OnCellClick event triggers when Scheduler cells are single-clicked or tapped on mobile devices.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" @ref="@ScheduleRef" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnCellClick="OnCellClick"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    SfSchedule<AppointmentData> ScheduleRef;
    public async Task OnCellClick(CellClickEventArgs args)
    {
        args.Cancel = true;
        await ScheduleRef.OpenEditorAsync(args, CurrentAction.Add);   // Open the editor window on cell click.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnCellDoubleClick

OnCellDoubleClick event triggers when Scheduler cells are double-clicked.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnCellDoubleClick="OnCellDoubleClick"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnCellDoubleClick(CellClickEventArgs args)
    {
        args.Cancel = true;   // Prevent the editor window from opening for cells only.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnDragStart

OnDragStart event triggers when appointment dragging starts.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnDragStart="OnDragStart"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnDragStart(DragEventArgs<AppointmentData> args)
    {
        args.Scroll.Enable = false;   // Prevent scrolling while dragging.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnEventClick

OnEventClick event triggers when events are single-clicked or tapped on mobile devices.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" @ref="@ScheduleRef" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnEventClick="OnEventClick"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    SfSchedule<AppointmentData> ScheduleRef;
    public async Task OnEventClick(EventClickArgs<AppointmentData> args)
    {
        args.Cancel = true;
        await ScheduleRef.OpenEditorAsync(args.Event, CurrentAction.Save);   // Open the editor on event click.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnEventDoubleClick

OnEventDoubleClick event triggers when events are double-clicked.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" @ref="@ScheduleRef" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnEventDoubleClick="OnEventDoubleClick"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    SfSchedule<AppointmentData> ScheduleRef;
    public async Task OnEventDoubleClick(EventClickArgs<AppointmentData> args)
    {
        args.Cancel = true;
        await ScheduleRef.OpenQuickInfoPopupAsync(args.Event); // Open the quick popup on double click.
    }

    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnPopupClose

OnPopupClose event triggers before any Scheduler popup closes on the page.

If you need to prevent only specific Scheduler popups, check the popup type in the condition. The popup types that can be checked within the OnPopupClose event are as follows.

PopupType	Description
Editor	For Detailed editor window.
QuickInfo	For the quick popup that opens on cell click.
EditEventInfo	For the quick popup that opens on event click.
ViewEventInfo	For the quick popup that opens in responsive mode.
EventContainer	For the more events indicator popup.
RecurrenceAlert	For the recurrence edit alert popup.
DeleteAlert	For the delete confirmation popup.
ValidationAlert	For the validation alert popup.
RecurrenceValidationAlert	For the recurrence validation alert popup.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnPopupClose="OnPopupClose"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnPopupClose(PopupCloseEventArgs<AppointmentData> args)
    {
        if (args.Type == PopupType.Editor || args.Type == PopupType.QuickInfo)
        {
            args.Data.Subject = (args.Data.Subject == "Add title") ? "New event" : args.Data.Subject;   // Change the default subject from Add Title to New event.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnPopupOpen

OnPopupOpen event triggers before any Scheduler popup opens on the page.

If you need to prevent only specific Scheduler popups, check the popup type in the condition. The popup types that can be checked within the OnPopupOpen event are as follows.

PopupType	Description
Editor	For Detailed editor window.
QuickInfo	For the quick popup that opens on cell click.
EditEventInfo	For the quick popup that opens on event click.
ViewEventInfo	For the quick popup that opens in responsive mode.
EventContainer	For the more events indicator popup.
RecurrenceAlert	For the recurrence edit alert popup.
DeleteAlert	For the delete confirmation popup.
ValidationAlert	For the validation alert popup.
RecurrenceValidationAlert	For the recurrence validation alert popup.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnPopupOpen="OnPopupOpen"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnPopupOpen(PopupOpenEventArgs<AppointmentData> args)
    {
        if (args.Type == PopupType.ValidationAlert)
        {
            args.Cancel = true;   // Prevent the start and end time validation alert.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnRenderCell

OnRenderCell event triggers before each Scheduler element is rendered on the page.

The ElementType values that can be checked within the OnRenderCell event are as follows.

ElementType	Description
AllDayCells	Triggers on all day cell rendering.
DateHeader	Triggers on header cell rendering.
EmptyCells	Triggers on empty cell rendering on header bar.
MajorSlot	Triggers on major time slot cell rendering.
MinorSlot	Triggers on minor time slot cell rendering.
MonthCells	Triggers on month cell rendering.
MonthDay	Triggers on header cell in month view rendering.
ResourceGroupCells	Triggers on rendering of work cells for parent resource.
ResourceHeader	Triggers on resource header cell rendering.
WorkCells	Triggers on work cell rendering.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnRenderCell="OnRenderCell"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>
<style>
    .e-schedule .e-vertical-view .e-work-hours.custom-class {
        background-color: ivory;
    }
</style>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public string[] CustomClass = { "custom-class" };
    public void OnRenderCell(RenderCellEventArgs args)
    {
        if (args.ElementType == ElementType.WorkCells)
        {
            args.CssClasses = new List<string>(CustomClass); // Change the default work hours color to ivory.
        }
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

OnResizeStart

OnResizeStart event triggers when appointment resizing starts.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" OnResizeStart="OnResizeStart"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnResizeStart(ResizeEventArgs<AppointmentData> args)
    {
        args.Scroll.Enable = false;   // Prevent scrolling while resizing the event.
        args.Interval = 10;   // Change the resizing time interval from 30 minutes (default) to 10 minutes.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}

Resized

Resized event triggers when appointment resizing stops.

@using Syncfusion.Blazor.Schedule

<SfSchedule TValue="AppointmentData" Width="100%" Height="550px" @bind-SelectedDate="@CurrentDate">
    <ScheduleEvents TValue="AppointmentData" Resized="OnResized"></ScheduleEvents>
    <ScheduleEventSettings DataSource="@DataSource"></ScheduleEventSettings>
    <ScheduleViews>
        <ScheduleView Option="View.Day"></ScheduleView>
        <ScheduleView Option="View.Week"></ScheduleView>
        <ScheduleView Option="View.WorkWeek"></ScheduleView>
        <ScheduleView Option="View.Month"></ScheduleView>
        <ScheduleView Option="View.Agenda"></ScheduleView>
    </ScheduleViews>
</SfSchedule>

@code{
    DateTime CurrentDate = new DateTime(2020, 3, 10);
    public void OnResized(ResizeEventArgs<AppointmentData> args)
    {
        args.Cancel = true;   // Prevent the resize action.
    }
    List<AppointmentData> DataSource = new List<AppointmentData>
    {
        new AppointmentData { Id = 1, Subject = "Meeting", StartTime = new DateTime(2020, 3, 10, 9, 30, 0) , EndTime = new DateTime(2020, 3, 10, 12, 0, 0) }
    };
    public class AppointmentData
    {
        public int Id { get; set; }
        public string Subject { get; set; }
        public string Location { get; set; }
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
        public string Description { get; set; }
        public bool IsAllDay { get; set; }
        public string RecurrenceRule { get; set; }
        public string RecurrenceException { get; set; }
        public Nullable<int> RecurrenceID { get; set; }
    }
}