.NET Framework Class Library
Calendar..::.DayRender Event

Occurs when each day is created in the control hierarchy for the Calendar control.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)
Syntax

Visual Basic (Declaration)
Public Event DayRender As DayRenderEventHandler
Visual Basic (Usage)
Dim instance As Calendar
Dim handler As DayRenderEventHandler

AddHandler instance.DayRender, handler
C#
public event DayRenderEventHandler DayRender
Visual C++
public:
 event DayRenderEventHandler^ DayRender {
    void add (DayRenderEventHandler^ value);
    void remove (DayRenderEventHandler^ value);
}
JScript
JScript does not support events.
ASP.NET
<asp:Calendar OnDayRender="DayRenderEventHandler" />
Remarks

This event is raised when each day is created in the control hierarchy for the Calendar control.

Although data binding is not supported for the Calendar control, it is possible to modify the content and formatting of the individual date cells. Before the Calendar control is displayed on the Web page, it creates and assembles the components that make up the control. The DayRender event is raised when each date cell in the Calendar control is created. You can control the contents and formatting of a date cell when it is created by providing code in the event handler for the DayRender event. For more information on customizing the contents of a date cell, see OnDayRender.

NoteNote:

Because the DayRender event is raised while the Calendar control is being rendered, you cannot add a control that can also raise an event, such as LinkButton. You can only add static controls, such as System.Web.UI..::.LiteralControl, Label, Image, and HyperLink.

For more information about handling events, see Events and Delegates.

Examples

The following code example demonstrates how to specify and code a handler for the DayRender event to make the background color yellow for the days in the displayed month. It also demonstrates how to customize the contents of a cell by adding a System.Web.UI..::.LiteralControl control to the cell.

Visual Basic
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html  >
<head>
    <title>DayRender Event Example</title>
<script language="VB" runat="server">

        Sub DayRender(source As Object, e As DayRenderEventArgs)

            ' Change the background color of the days in the month
            ' to yellow.
            If Not e.Day.IsOtherMonth And Not e.Day.IsWeekend Then
                e.Cell.BackColor = System.Drawing.Color.Yellow
            End If 
            ' Add custom text to cell in the Calendar control.
            If e.Day.Date.Day = 18 Then
                e.Cell.Controls.Add(New LiteralControl(ChrW(60) & "br" & ChrW(62) & "Holiday"))
            End If 
        End Sub 'DayRender 

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>DayRender Event Example</h3>

      <asp:Calendar id="calendar1" 
                    OnDayRender="DayRender"
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>

   </form>

</body>
</html>

C#
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html  >
<head>
    <title>DayRender Event Example</title>
<script language="C#" runat="server">

      void DayRender(Object source, DayRenderEventArgs e) 
      {

         // Change the background color of the days in the month
         // to yellow.
         if (!e.Day.IsOtherMonth && !e.Day.IsWeekend)
            e.Cell.BackColor=System.Drawing.Color.Yellow;

         // Add custom text to cell in the Calendar control.
         if (e.Day.Date.Day == 18)
            e.Cell.Controls.Add(new LiteralControl("<br />Holiday"));

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>DayRender Event Example</h3>

      <asp:Calendar id="calendar1" 
                    OnDayRender="DayRender"
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>

   </form>

</body>
</html>

JScript
<%@ Page Language="JScript" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html  >
<head>
    <title>DayRender Event Example</title>
<script language="JScript" runat="server">

      function DayRender(source : Object, e : DayRenderEventArgs) 
      {

         // Change the background color of the days in the month
         // to yellow.
         if (!e.Day.IsOtherMonth && !e.Day.IsWeekend)
            e.Cell.BackColor=System.Drawing.Color.Yellow;

         // Add custom text to cell in the Calendar control.
         if (e.Day.Date.Day == 18)
            e.Cell.Controls.Add(new LiteralControl("<br />Holiday"));

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>DayRender Event Example</h3>

      <asp:Calendar id="calendar1" 
                    OnDayRender="DayRender"
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>

   </form>

</body>
</html>

Visual Basic
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html  >
<head runat="server">
    <title>Calendar DayRender Example</title>
<script runat="server">

      Sub DayRender(sender as Object, e As DayRenderEventArgs) 

         ' Change the background color of the days in the month
         ' to yellow.
         If (Not e.Day.IsOtherMonth) And (Not e.Day.IsWeekend) Then

            e.Cell.BackColor=System.Drawing.Color.Yellow

         End If

         ' Add custom text to cell in the Calendar control.
         If e.Day.Date.Day = 18 Then

            e.Cell.Controls.Add(New LiteralControl("<br />Holiday"))

         End If

      End Sub

      Sub Page_Load(sender As Object, e As EventArgs)

         ' Manually register the event-handling method for the DayRender  
         ' event of the Calendar control.
         AddHandler Calendar1.DayRender, AddressOf DayRender

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>Calendar DayRender Example</h3>

      <asp:Calendar id="Calendar1" 
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>

   </form>

</body>
</html>

C#
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html  >
<head runat="server">
    <title>Calendar DayRender Example</title>
<script runat="server">

      void DayRender(Object sender, DayRenderEventArgs e) 
      {

         // Change the background color of the days in the month
         // to yellow.
         if (!e.Day.IsOtherMonth && !e.Day.IsWeekend)
         {
            e.Cell.BackColor=System.Drawing.Color.Yellow;
         }

         // Add custom text to cell in the Calendar control.
         if (e.Day.Date.Day == 18)
         {
            e.Cell.Controls.Add(new LiteralControl("<br />Holiday"));
         }

      }

      void Page_Load(Object sender, EventArgs e)
      {

         // Manually register the event-handling method for the DayRender  
         // event of the Calendar control.
         Calendar1.DayRender += new DayRenderEventHandler(this.DayRender);

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>Calendar DayRender Example</h3>

      <asp:Calendar id="Calendar1" 
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>

   </form>

</body>
</html>

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
See Also

Reference

Other Resources

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