Add Text To Day Cell In Calendar Control In C#

This code snippet shows how to add text to the day cell in a Calendar control. It uses the OnDayRender event to add text to a day cell from a DataTable object.

1. //Default.aspx
2.  
3. <form id="form1" runat="server">
4.         <div>
5.                 <asp:Calendar ID="Calendar" runat="server" OnDayRender="DayRender" ShowGridLines="true" />
6.         </div>
7. </form>
8.  
9. //Default.aspx.cs
10.  
11. using System;
12. using System.Collections.Generic;
13. using System.Data;
14. using System.Web;
15. using System.Web.UI;
16. using System.Web.UI.WebControls;
17.  
18. public partial class _Default : System.Web.UI.Page
19. {
20.     DataTable _DayEventsTable;
21.  
22.     protected void Page_Load(object sender, EventArgs e)
23.     {
24.         _DayEventsTable = new DataTable();
25.         _DayEventsTable.Columns.Add("Date");
26.         _DayEventsTable.Columns.Add("Title");
27.  
28.         _DayEventsTable.Rows.Add(DateTime.Now.AddDays(-2).Date.ToString(), "Meeting with Boss");
29.         _DayEventsTable.Rows.Add(DateTime.Now.Date.ToString(), "Lunch with Suzan");
30.         _DayEventsTable.Rows.Add(DateTime.Now.AddDays(2).Date.ToString(), "Trip to Paris!");
31.     }
32.  
33.     protected void DayRender(object sender, DayRenderEventArgs e)
34.     {
35.         foreach (DataRow Row in _DayEventsTable.Rows)
36.         {
37.             string Date = Row["Date"].ToString();
38.             string Title = Row["Title"].ToString();
39.  
40.             if (Date == e.Day.Date.ToString())
41.             {
42.                 e.Cell.Controls.Add(new LiteralControl("<p>" + Title + "</p>"));
43.             }
44.         }
45.     }
46. }