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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)

public event MonthChangedEventHandler VisibleMonthChanged

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="C#" 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">

      void MonthChange(Object sender, MonthChangedEventArgs e) 
      {

         if (e.NewDate.Month > e.PreviousDate.Month)
         { 
            Message.Text = "You moved forward one month.";
         }
         else
         {
            Message.Text = "You moved backwards one month.";
         }

      }

   </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="C#" 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">

      void MonthChange(Object sender, MonthChangedEventArgs e) 
      {

         if (e.NewDate.Month > e.PreviousDate.Month)
         { 
            Message.Text = "You moved forward one month.";
         }
         else
         {
            Message.Text = "You moved backwards one month.";
         }

      }

      void Page_Load(Object sender, EventArgs e)
      {

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

      }

   </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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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