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Calendar.VisibleMonthChanged Event

Occurs when the user clicks the next or previous month navigation controls on the title heading.

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

'Declaration
Public Event VisibleMonthChanged As MonthChangedEventHandler
<asp:Calendar OnVisibleMonthChanged="MonthChangedEventHandler" />

This event is raised when the user clicks the next or previous month navigation elements on the title heading.

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

The following code example demonstrates how to specify and code a handler for the VisibleMonthChanged event to display whether the Calendar control has moved forward or backward one month.


<%@ 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 xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">
    <title> Calendar VisibleMonthChanged Example </title>
<script runat="server">

      Sub MonthChange(sender As Object, e As MonthChangedEventArgs) 

         If e.NewDate.Month > e.PreviousDate.Month Then

            Message.Text = "You moved forward one month."

         Else

            Message.Text = "You moved backwards one month."

         End If

      End Sub

   </script>

</head>

<body>

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

      <h3> Calendar VisibleMonthChanged Example </h3>

      Select a different month on the calendar. 
      <br /><br />

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

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

      </asp:Calendar>

      <hr /> 

      <table border="1">

         <tr style="background-color:Silver">

            <th>

               Month navigation direction

            </th>
         </tr>

         <tr>

            <td>

               <asp:Label id="Message" 
                    Text="Starting Month." 
                    runat="server"/>

            </td>

         </tr>

      </table>

   </form>

</body>

</html>
   



<%@ 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 xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">
    <title> Calendar VisibleMonthChanged Example </title>
<script runat="server">

      Sub MonthChange(sender As Object, e As MonthChangedEventArgs) 

         If e.NewDate.Month > e.PreviousDate.Month Then

            Message.Text = "You moved forward one month."

         Else

            Message.Text = "You moved backwards one month."

         End If

      End Sub

      Sub Page_Load(sender As Object, e As EventArgs)

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

      End Sub

   </script>

</head>

<body>

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

      <h3> Calendar VisibleMonthChanged Example </h3>

      Select a different month on the calendar. 
      <br /><br />

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

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

      </asp:Calendar>

      <hr /> 

      <table border="1">

         <tr style="background-color:Silver">

            <th>

               Month navigation direction

            </th>
         </tr>

         <tr>

            <td>

               <asp:Label id="Message" 
                    Text="Starting Month." 
                    runat="server"/>

            </td>

         </tr>

      </table>

   </form>

</body>

</html>
   


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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