This example demonstrates how to implement a custom Go to Date dialog.

1. Call the SetGotoDateFormTemplateContent method to specify custom content for the Go to Date form. Add a single Calendar extension to the form.

   settings.OptionsForms.SetGotoDateFormTemplateContent(c => {
       Html.DevExpress().Calendar(calendarSettings => {
           calendarSettings.Name = "calendar";
           calendarSettings.Properties.ClientSideEvents.SelectionChanged = "OnCalendarSelectionChanged";
           calendarSettings.Properties.ShowClearButton = false;
       }).Bind(c.Date).Render();
   });

2. Specify the CalendarClientSideEvents.SelectionChanged property to subscribe to selection changes in the calendar. The event handler calls the ASPxClientScheduler.GoToDateFormApply method to initiate a callback to the server.

   function OnCalendarSelectionChanged(s, e){
       gotoDateCallback = true;
       scheduler.GoToDateFormApply();
   }
   

3. Handle the MVCxSchedulerClientSideEvents.BeginCallback event to obtain a new date from the calendar and pass it to the server.

   function OnSchedulerBeginCallback(s, e){
       if(gotoDateCallback){
           e.customArgs["NewDate"] = calendar.GetValueString();
           gotoDateCallback = false;
       }
   }
   

4. Implement a special callback command to handle this request properly. Create a DevExpress.Web.ASPxScheduler.Internal.GotoDateFormCallbackCommand class successor and override its ParseParameters and ExecuteCore methods. In the ExecuteCore method, call methods of the IDateTimeNavigationService interface to perform date navigation in the scheduler.

   public class MVCxSchedulerGotoDateFormCallbackCommand: GotoDateFormCallbackCommand {
       public MVCxSchedulerGotoDateFormCallbackCommand(MVCxScheduler control)
           : base(control) {
       }
       public new DateTime NewDate { get; protected set; }
       protected override void ParseParameters(string parameters) {
           string rawDate = HttpContext.Current.Request["NewDate"];
           NewDate = DateTime.Parse(rawDate);
       }
       protected override void ExecuteCore() {
           IDateTimeNavigationService service = (IDateTimeNavigationService)Control.GetService(typeof(IDateTimeNavigationService));
           if (service != null)
               service.GoToDate(NewDate);
       }
   }

5. Create a delegate method for the SchedulerSettings.BeforeExecuteCallback property to execute your custom command instead of the default command when the GotoDateForm command is queried for execution.

   settings.BeforeExecuteCallbackCommand = (sender, e) => {
       if(e.CommandId == SchedulerCallbackCommandId.GotoDateForm)
           e.Command = new MVCxSchedulerGotoDateFormCallbackCommand((MVCxScheduler)sender);
   };

• SchedulingDataClasses.cs
• Scheduler.cshtml
• SchedulerPartial.cshtml

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