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MonthChangedEventArgs.PreviousDate Property

Gets the date that determines the previously displayed month in the Calendar control.

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

public DateTime PreviousDate { get; }

Property Value

Type: System.DateTime
The date that determines the month previously displayed by the Calendar.

Use this property to determine the previously displayed month on the Calendar control. You can restore the Calendar control to the previously displayed month by setting the VisibleDate property to PreviousDate.

This date is normally the first date of the previously displayed month; however, it can be programmatically changed to any date within the month.

The VisibleDate property is updated to the date in this property before the VisibleMonthChanged event is raised.

The following code example demonstrates how to compare the months of the NewDate property and the PreviousDate property to determine whether the Calendar control moved forward one month 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>
   

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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