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AJAX Event Calendar (Scheduler) for ASP.NET MVC in 80 Lines of Code

, 15 Apr 2014 Apache
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How to build an AJAX Event Calendar (Scheduler) using the open-source DayPilot Lite for ASP.NET MVC library (Apache Software License 2.0).

AJAX Event Calendar for ASP.NET MVC

Introduction

This sample project shows how to build an AJAX Event Calendar (Scheduler) using the open-source DayPilot Lite for ASP.NET MVC library (Apache Software License 2.0). We will build our sample with ASP.NET MVC 5, Visual Studio 2012, and LocalDB SQL Server.

Online demos:

The monthly event calendar view is supported since DayPilot Lite for MVC 1.3 release.

We will need only 80 lines for code for the full drag&drop functionality (event creating, moving and resizing).

Three steps are necessary:

  • Library: Include DayPilot.Web.Mvc.dll and scripts in your project and add a reference to it.
  • View: Create a new MVC Razor view and add DayPilot Calendar widget using Html.DayPilotCalendar extension.
  • Controller: Create an MVC controller that will supply the data.

CSS Themes (New in 1.4)

Since v1.4, DayPilot Lite shares the JavaScript core with DayPilot Lite for JavaScript [javascript.daypilot.org]. See also HTML5 Event Calendar (Open-Source) [code.daypilot.org].

DayPilot Lite for ASP.NET MVC 1.4 [mvc.daypilot.org] introduces full CSS styling support, including CSS themes. You can also build your own theme in the online CSS theme designer [themes.daypilot.org].

Google-Like CSS Theme

AJAX Event Calendar for ASP.NET MVC - Google-Like CSS Theme

Transparent CSS Theme

AJAX Event Calendar for ASP.NET MVC - Transparent CSS Theme

Green CSS Theme

AJAX Event Calendar for ASP.NET MVC - Green CSS Theme

White CSS Theme

AJAX Event Calendar for ASP.NET MVC - White CSS Theme

Traditional CSS Theme

AJAX Event Calendar for ASP.NET MVC - Traditional CSS Theme

1. DayPilot.Web.Mvc Library

Download DayPilot Lite for ASP.NET MVC open-source package.

Copy DayPilot JavaScript files from the Scripts folder of the package to your project (Scripts/DayPilot):

  • daypilot-all.min.js

Copy DayPilot.Web.Mvc.dll from the Binary folder of the package to your project (Bin).

Add a reference to DayPilot.Web.Mvc.dll:

Add reference to DayPilot.Web.Mvc.dll

2. MVC View (8 Lines of Code)

Create a new ASP.NET MVC view (Views/Home/Index.cshtml):

@{ ViewBag.Title = "ASP.NET MVC Razor Event Calendar"; }
<h2>ASP.NET MVC Razor Event Calendar</h2> 

Add DayPilot JavaScript libraries:

<script src="@Url.Content("~/Scripts/DayPilot/daypilot-all.min.js")" type="text/javascript"></script> 

Add the event calendar initialization code:

@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig
{
  BackendUrl = Url.Content("~/Home/Backend"),
}) 

Note that the minimum required code is quite short. It only has to point to the backend MVC controller ("~/Home/Backend") that will supply the calendar event data using an AJAX call.

Don't forget to add DayPilot.Web.Mvc namespace to /Views/Web.config so it recognizes the Html.DayPilotCalendar helper:

<configuration>
  <system.web.webPages.razor>
    <pages pageBaseType="System.Web.Mvc.WebViewPage">
      <namespaces>
        ...
        <add namespace="DayPilot.Web.Mvc"/>
      </namespaces>
    </pages>
  </system.web.webPages.razor>
</configuration>

This is the complete code of our new MVC view with the event calendar:

@{ ViewBag.Title = "ASP.NET MVC Razor Event Calendar"; }

<h2>ASP.NET MVC Razor Event Calendar</h2>

<script src="@Url.Content("~/Scripts/DayPilot/daypilot-all.min.js")" type="text/javascript"></script>

@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig
{
  BackendUrl = Url.Content("~/Home/Backend")
})

3. MVC Controller (34 Lines of Code)

Create a new MVC controller (Controllers/HomeController.cs):

public class HomeController : Controller
{
  public ActionResult Index()
  {
    return View();
  }
}

Add a new action handler for the calendar backend. It will be accessible as /Home/Backend.

public ActionResult Backend()
{
  return new Dpc().CallBack(this);
}

This action will pass control to a new instance of a custom Dpc class that derives from DayPilotCalendar:

class Dpc : DayPilotCalendar
{
  protected override void OnInit(InitArgs e)
  {
    var db = new DataClasses1DataContext();
    Events = from ev in db.events select ev;

    DataIdField = "id";
    DataTextField = "text";
    DataStartField = "eventstart";
    DataEndField = "eventend";

    Update();
  }
}  

We have loaded the calendar event data from a simple MS SQL table called "events" using a LINQ to SQL classes generated using Visual Studio 2010 wizard (DataClasses1.dbml).

LINQ to SQL

The "events" table has a very simple structure:

Events table structure

The table fields (id, text, eventstart, eventend) are mapped to the required DayPilotCalendar fields using Data*Field properties:

DataIdField = "id";
DataTextField = "text";
DataStartField = "eventstart";
DataEndField = "eventend";

Calling Update() will send the calendar event data to the client and update the display:

ASP.NET Event Calendar for ASP.NET MVC Day View

And here is the complete code of the MVC controller that supplies the calendar event data to the client using AJAX:

using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using DayPilot.Web.Mvc;
using DayPilot.Web.Mvc.Events.Calendar;

namespace DayPilotCalendarMvc.Controllers
{
  public class HomeController : Controller
  {
    public ActionResult Index()
    {
      return View();
    }

    public ActionResult Backend()
    {
      return new Dpc().CallBack(this);
    }

    class Dpc : DayPilotCalendar
    {
      protected override void OnInit(InitArgs e)
      {
        var db = new DataClasses1DataContext();
        Events = from ev in db.events select ev;

        DataIdField = "id";
        DataTextField = "text";
        DataStartField = "eventstart";
        DataEndField = "eventend";

        Update();
      }
    }
  }
}

4. Adding AJAX Drag&Drop Functionality (38 Lines of Code)

AJAX Event Calendar for ASP.NET MVC Drag&Drop

In order to enable the drag and drop functionality (event creating, moving, and resizing) we need to add the following lines to the view (four new lines):

@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig
{
  BackendUrl = Url.Content("~/Home/Backend"),
  EventMoveHandling = DayPilot.Web.Mvc.Events.Calendar.EventMoveHandlingType.CallBack,
  EventResizeHandling = DayPilot.Web.Mvc.Events.Calendar.EventResizeHandlingType.CallBack,
  TimeRangeSelectedHandling = DayPilot.Web.Mvc.Events.Calendar.TimeRangeSelectedHandlingType.JavaScript,
  TimeRangeSelectedJavaScript = "dpc.timeRangeSelectedCallBack(start, 
        end, null, { name: prompt('New Event Name:', 'New Event') });"
})

The controller must be extended as well. It will handle the events (EventMove, EventResize, and TimeRangeSelected) and update the database (34 new lines):

using System;
using System.Linq;
using System.Web.Mvc;
using DayPilot.Web.Mvc;
using DayPilot.Web.Mvc.Enums;
using DayPilot.Web.Mvc.Events.Calendar;

namespace DayPilotCalendarMvc.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Backend()
        {
            return new Dpc().CallBack(this);
        }

        class Dpc : DayPilotCalendar
        {
            DataClasses1DataContext db = new DataClasses1DataContext();

            protected override void OnInit(InitArgs e)
            {
                Update(CallBackUpdateType.Full);
            }

            protected override void OnEventResize(EventResizeArgs e)
            {
                var toBeResized = (from ev in db.Events where ev.id == Convert.ToInt32(e.Id) select ev).First();
                toBeResized.eventstart = e.NewStart;
                toBeResized.eventend = e.NewEnd;
                db.SubmitChanges();
                Update();
            }

            protected override void OnEventMove(EventMoveArgs e)
            {
                var toBeResized = (from ev in db.Events where ev.id == Convert.ToInt32(e.Id) select ev).First();
                toBeResized.eventstart = e.NewStart;
                toBeResized.eventend = e.NewEnd;
                db.SubmitChanges();
                Update();
            }

            protected override void OnTimeRangeSelected(TimeRangeSelectedArgs e)
            {
                var toBeCreated = new Event {eventstart = e.Start, 
                                             eventend = e.End, text = (string) e.Data["name"]};
                db.Events.InsertOnSubmit(toBeCreated);
                db.SubmitChanges();
                Update();
            }

            protected override void OnFinish()
            {
                if (UpdateType == CallBackUpdateType.None)
                {
                    return;
                }

                Events = from ev in db.Events select ev;

                DataIdField = "id";
                DataTextField = "text";
                DataStartField = "eventstart";
                DataEndField = "eventend";
            }
        }
    }
}

5. Bonus: Week View (+1 Line)

AJAX Event Calendar for ASP.NET MVC

Switching to week view is a simple as adding a single line of code to the view:

ViewType = DayPilot.Web.Mvc.Enums.Calendar.ViewType.Week,

It goes here:

@Html.DayPilotCalendar("dpc", new DayPilotCalendarConfig
{
  BackendUrl = Url.Content("~/Home/Backend"),
  ViewType = DayPilot.Web.Mvc.Enums.Calendar.ViewType.Week,
  EventMoveHandling = DayPilot.Web.Mvc.Events.Calendar.EventMoveHandlingType.CallBack,
  EventResizeHandling = DayPilot.Web.Mvc.Events.Calendar.EventResizeHandlingType.CallBack,
  TimeRangeSelectedHandling = DayPilot.Web.Mvc.Events.Calendar.TimeRangeSelectedHandlingType.JavaScript,
  TimeRangeSelectedJavaScript = 
    "dpc.timeRangeSelectedCallBack(start, end, null, { name: prompt('New Event Name:', 'New Event') });"
})

Other supported ViewType modes are WorkWeek and Days (custom number of days, set using Days property).

Month View (New in 1.3)

Monthly AJAX Event Calendar for ASP.NET MVC

See also the Monthly Event Calendar tutorial:

See Also

History

License

This article, along with any associated source code and files, is licensed under The Apache License, Version 2.0

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About the Author

Dan Letecky

Czech Republic Czech Republic
My open-source event calendar/scheduling AJAX controls:
 
DayPilot for JavaScript/HTML5/jQuery
DayPilot for ASP.NET
DayPilot for MVC
DayPilot for Java

Comments and Discussions

 
QuestionNice PinmemberLiuxf30-Apr-13 4:38 
AnswerRe: Nice PinmemberDan Letecky30-Apr-13 4:40 

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