This documentation is archived and is not being maintained.

SelectedDatesCollection Class

Encapsulates a collection of System.DateTime objects that represent the selected dates in a Calendar control. This class cannot be inherited.

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

'Declaration
Public NotInheritable Class SelectedDatesCollection
	Implements ICollection, IEnumerable
'Usage
Dim instance As SelectedDatesCollection

public final class SelectedDatesCollection implements ICollection, IEnumerable
public final class SelectedDatesCollection implements ICollection, IEnumerable

Use this class to programmatically manage a collection of System.DateTime objects that represent the selected dates in a Calendar control. This class is commonly used to add or remove dates from the collection.

This collection stores only whole dates. The time portion of each System.DateTime is removed. The dates are stored in ascending order. If there are duplicate dates, only one date is stored in the collection.

The following code example demonstrates how to programmatically use the SelectedDatesCollection class to select dates in the Calendar control.

<%@ Page Language="VB"%>
 
<script runat="server">
 
  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
 
    DisplayCalendar.VisibleDate = DisplayCalendar.TodaysDate
    
  End Sub

  Sub SelectButton_Click(ByVal sender As Object, ByVal e As EventArgs)

    Dim current_day As Integer = DisplayCalendar.VisibleDate.Day
    Dim current_month As Integer = DisplayCalendar.VisibleDate.Month
    Dim current_year As Integer = DisplayCalendar.VisibleDate.Year

    DisplayCalendar.SelectedDates.Clear()
   
    ' Iterate through the current month and add all Wednesdays to the 
    ' SelectedDates collection of the Calendar control.
    Dim i As Integer
    For i = 1 To System.DateTime.DaysInMonth(current_year, current_month)
    
      Dim currentDate As New DateTime(current_year, current_month, i)
      If currentDate.DayOfWeek = DayOfWeek.Wednesday Then
       
        DisplayCalendar.SelectedDates.Add(currentDate)
        
      End If
      
    Next

    MessageLabel.Text = "Selection Count = " + DisplayCalendar.SelectedDates.Count.ToString()
 
  End Sub

  Sub DisplayCalendar_SelectionChanged(ByVal sender As Object, ByVal e As EventArgs)
  
    MessageLabel.Text = "Selection Count = " & DisplayCalendar.SelectedDates.Count.ToString()
  
  End Sub
 
</script> 
 
<html>
  <body>
    <form runat="server">
 
      <asp:calendar id="DisplayCalendar" runat="server"  
        selectionmode="DayWeekMonth" 
        onselectionchanged="DisplayCalendar_SelectionChanged" />
 
      <hr>
 
      <asp:button id="SelectButton"
        text="Select All Weds in Month" 
        onclick="SelectButton_Click"  
        runat=server/> 
        
      <br/>
 
      <asp:label id="MessageLabel" 
        runat=server />
 
    </form>
  </body>
</html>
   

System.Object
  System.Web.UI.WebControls.SelectedDatesCollection

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0
Show: