Calendar Control In ASP.NET

Code behind file

using System;  
using System.Configuration;  
using System.Data;  
using System.Linq;  
using System.Web;  
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.HtmlControls;  
using System.Web.UI.WebControls;  
using System.Web.UI.WebControls.WebParts;  
using System.Xml.Linq;  
using System.Collections;  
   
public partial class _Default : System.Web.UI.Page  
{  
    Hashtable HolidayList;  
   
    protected void Page_Load(object sender, EventArgs e)  
    {  
        HolidayList = Getholiday();  
        Calendar1.Caption = "Calender - Author: Puran Singh Mehra";  
        Calendar1.FirstDayOfWeek = FirstDayOfWeek.Sunday;  
        Calendar1.NextPrevFormat = NextPrevFormat.ShortMonth;  
        Calendar1.TitleFormat = TitleFormat.Month;  
        Calendar1.ShowGridLines = true;  
        Calendar1.DayStyle.Height = new Unit(50);  
        Calendar1.DayStyle.Width = new Unit(150);  
        Calendar1.DayStyle.HorizontalAlign = HorizontalAlign.Center;  
        Calendar1.DayStyle.VerticalAlign = VerticalAlign.Middle;  
        Calendar1.OtherMonthDayStyle.BackColor = System.Drawing.Color.AliceBlue;  
    }  
  
    private Hashtable Getholiday()  
    {         
        Hashtable holiday = new Hashtable();  
        holiday["1/1/2009"] = "New Year";  
        holiday["1/5/2009"] = "Guru Govind Singh Jayanti";  
        holiday["1/8/2009"] = "Muharam (Al Hijra)";  
        holiday["1/14/2009"] = "Pongal";  
        holiday["1/26/2009"] = "Republic Day";  
        holiday["2/23/2009"] = "Maha Shivaratri";  
        holiday["3/10/2009"] = "Milad un Nabi (Birthday of the Prophet";  
        holiday["3/21/2009"] = "Holi";  
        holiday["3/21/2009"] = "Telugu New Year";  
        holiday["4/3/2009"] = "Ram Navmi";  
        holiday["4/7/2009"] = "Mahavir Jayanti";  
        holiday["4/10/2009"] = "Good Friday";  
        holiday["4/12/2009"] = "Easter";  
        holiday["4/14/2009"] = "Tamil New Year and Dr Ambedkar Birth Day";  
        holiday["5/1/2009"] = "May Day";  
        holiday["5/9/2009"] = "Buddha Jayanti and Buddha Purnima";  
        holiday["6/24/2009"] = "Rath yatra";  
        holiday["8/13/2009"] = "Krishna Jayanthi";  
        holiday["8/14/2009"] = "Janmashtami";  
        holiday["8/15/2009"] = "Independence Day";  
        holiday["8/19/2009"] = "Parsi New Year";  
        holiday["8/23/2009"] = "Vinayaka Chaturthi";  
        holiday["9/2/2009"] = "Onam";  
        holiday["9/5/2009"] = "Teachers Day";  
        holiday["9/21/2009"] = "Ramzan";  
        holiday["9/27/2009"] = "Ayutha Pooja";  
        holiday["9/28/2009"] = "Vijaya Dasami (Dusherra)";  
        holiday["10/2/2009"] = "Gandhi Jayanti";  
        holiday["10/17/2009"] = "Diwali & Govardhan Puja";  
        holiday["10/19/2009"] = "Bhaidooj";  
        holiday["11/2/2009"] = "Guru Nanak Jayanti";  
        holiday["11/14/2009"] = "Children's Day";  
        holiday["11/28/2009"] = "Bakrid";  
        holiday["12/25/2009"] = "Christmas";  
        holiday["12/28/2009"] = "Muharram";  
        return holiday;  
    }  
  
    protected void Calendar1_SelectionChanged(object sender, EventArgs e)  
    {  
        LabelAction.Text = "Date changed to :" + Calendar1.SelectedDate.ToShortDateString();  
    }  
  
    protected void Calendar1_VisibleMonthChanged(object sender, MonthChangedEventArgs e)  
    {  
        LabelAction.Text = "Month changed to :" + e.NewDate.ToShortDateString();  
    }  
  
    protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)  
    {  
        if (HolidayList[e.Day.Date.ToShortDateString()] != null)  
        {  
            Literal literal1 = new Literal();  
            literal1.Text = "<br/>";  
            e.Cell.Controls.Add(literal1);  
            Label label1 = new Label();  
            label1.Text = (string)HolidayList[e.Day.Date.ToShortDateString()];  
            label1.Font.Size = new FontUnit(FontSize.Small);  
            e.Cell.Controls.Add(label1);  
        }  
    }  
}

Code review

In the above code we have used DayRender, SelectionChanged and VisibleMonthChanged events. A method called Getholiday() is added to populate a collection of holidays. In the Calendar1_DayRender event handler we are displaying the holiday in a label, which is created, and is added to the Cell objects Controls collection.

Output of the above code

Conclusion

I hope that this article will have helped you in understanding the calendar control. Certainly there are a lot of variants as to how calendar control can be designed, but my aim was to provide just a basic tutorial on writing and using Calendar controls.

Please share if you know more information about the subject of this article. Your feedback and constructive contributions are welcome.