Occurs when the user selects a day, a week, or an entire month by clicking the date selector controls.
Assembly: System.Web (in System.Web.dll)
Syntax
Public Event SelectionChanged As [%$TOPIC/6ycks4k2_en-us_VS_110_1_0_0_0_0%]public event [%$TOPIC/6ycks4k2_en-us_VS_110_1_0_1_0_0%] SelectionChangedpublic:
event [%$TOPIC/6ycks4k2_en-us_VS_110_1_0_2_0_0%]^ SelectionChanged {
void add ([%$TOPIC/6ycks4k2_en-us_VS_110_1_0_2_0_1%]^ value);
void remove ([%$TOPIC/6ycks4k2_en-us_VS_110_1_0_2_0_2%]^ value);
}member SelectionChanged : IEvent<[%$TOPIC/6ycks4k2_en-us_VS_110_1_0_3_0_0%],
[%$TOPIC/6ycks4k2_en-us_VS_110_1_0_3_0_1%]><asp:[%$TOPIC/6ycks4k2_en-us_VS_110_1_0_4_0_0%] OnSelectionChanged="[%$TOPIC/6ycks4k2_en-us_VS_110_1_0_4_0_1%]" />
Remarks
This event is raised when the user selects a day, a week, or an entire month by clicking the date selector controls.
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 SelectionChanged event to display the number of items selected in the Calendar control.
<%@ 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 SelectionChanged Example</title>
<script runat="server">
Sub Selection_Change(sender As Object, e As EventArgs)
' Clear the current text.
Message.Text = ""
' Iterate through the SelectedDates collection and display the
' dates selected in the Calendar control.
Dim day As DateTime
For Each day In Calendar1.SelectedDates
Message.Text &= day.Date.ToShortDateString() & "<br />"
Next
End Sub
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Calendar SelectionChanged Example</h3>
Select dates on the Calendar control.<br /><br />
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
ShowGridLines="True"
OnSelectionChanged="Selection_Change">
<SelectedDayStyle BackColor="Yellow"
ForeColor="Red">
</SelectedDayStyle>
</asp:Calendar>
<hr />
<table border="1">
<tr style="background-color:silver">
<th>
Selected Dates:
</th>
</tr>
<tr>
<td>
<asp:Label id="Message"
Text="No dates selected."
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 SelectionChanged Example</title>
<script runat="server">
void Selection_Change(Object sender, EventArgs e)
{
// Clear the current text.
Message.Text = "";
// Iterate through the SelectedDates collection and display the
// dates selected in the Calendar control.
foreach(DateTime day in Calendar1.SelectedDates)
{
Message.Text += day.Date.ToShortDateString() + "<br />";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Calendar SelectionChanged Example</h3>
Select dates on the Calendar control.<br /><br />
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
ShowGridLines="True"
OnSelectionChanged="Selection_Change">
<SelectedDayStyle BackColor="Yellow"
ForeColor="Red">
</SelectedDayStyle>
</asp:Calendar>
<hr />
<table border="1">
<tr style="background-color:silver">
<th>
Selected Dates:
</th>
</tr>
<tr>
<td>
<asp:Label id="Message"
Text="No dates selected."
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 SelectionChanged Example</title>
<script runat="server">
Sub Selection_Change(sender As Object, e As EventArgs)
' Clear the current text.
Message.Text = ""
' Iterate through the SelectedDates collection and display the
' dates selected in the Calendar control.
Dim day As DateTime
For Each day In Calendar1.SelectedDates
Message.Text &= day.Date.ToShortDateString() & "<br />"
Next
End Sub
Sub Page_Load(sender As Object, e As EventArgs)
' Manually register the event-handling method for the
' SelectionChanged event of the Calendar control.
AddHandler Calendar1.SelectionChanged, AddressOf Selection_Change
End Sub
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Calendar SelectionChanged Example</h3>
Select a day, week, or month on the Calendar control.<br /><br />
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
ShowGridLines="True">
<SelectedDayStyle BackColor="Yellow"
ForeColor="Red">
</SelectedDayStyle>
</asp:Calendar>
<hr />
<table border="1">
<tr style="background-color:silver">
<th>
Selected Dates:
</th>
</tr>
<tr>
<td>
<asp:Label id="Message"
Text="No dates selected."
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 SelectionChanged Example</title>
<script runat="server">
void Selection_Change(Object sender, EventArgs e)
{
// Clear the current text.
Message.Text = "";
// Iterate through the SelectedDates collection and display the
// dates selected in the Calendar control.
foreach(DateTime day in Calendar1.SelectedDates)
{
Message.Text += day.Date.ToShortDateString() + "<br />";
}
}
void Page_Load(Object sender, EventArgs e)
{
// Manually register the event-handling method for the
// SelectionChanged event of the Calendar control.
Calendar1.SelectionChanged += new EventHandler(this.Selection_Change);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<h3>Calendar SelectionChanged Example</h3>
Select a day, week, or month on the Calendar control.<br /><br />
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
ShowGridLines="True">
<SelectedDayStyle BackColor="Yellow"
ForeColor="Red">
</SelectedDayStyle>
</asp:Calendar>
<hr />
<table border="1">
<tr style="background-color:silver">
<th>
Selected dates
</th>
</tr>
<tr>
<td>
<asp:Label id="Message"
Text="No dates selected."
runat="server"/>
</td>
</tr>
</table>
</form>
</body>
</html>
Platforms
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.
See Also
