CalendarDay.IsSelected 属性

定义

获取一个值,该值指示由此类的实例表示的日期是否在 Calendar 控件中被选定。Gets a value that indicates whether the date represented by an instance of this class is selected in the Calendar control. 此属性为只读。This property is read-only.

public:
 property bool IsSelected { bool get(); };
public bool IsSelected { get; }
member this.IsSelected : bool
Public ReadOnly Property IsSelected As Boolean

属性值

Boolean

如果由此类的实例表示的日期在 Calendar 控件中被选定,则为 true;否则为 falsetrue if the date represented by an instance of this class is selected in the Calendar control; otherwise, false.

示例

下面的示例演示如何使用 IsSelected 属性来确定中是否已选择当前日期 CalendarThe following example demonstrates how to use the IsSelected property to determine if the current date is selected in the Calendar. 请注意, Day DayRenderEventArgs 传递到事件处理程序的对象的属性 DayRenderCalendarDay 对象。Note that the Day property of the DayRenderEventArgs object passed into the DayRender event handler is the CalendarDay object.

<%@ 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>
    <title>ASP.NET Example</title>
<script language="C#" runat="server">

      void DayRender(Object source, DayRenderEventArgs e) 
      {
      
         if (e.Day.IsSelected && e.Day.IsToday)
         {
            Label1.Text = "You selected today's date.";
         }
      
      }

   </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">
 
      <asp:Calendar id="calendar1" runat="server"
           WeekendDayStyle-BackColor="gray"
           OnDayRender="DayRender"/>

      <br /><br />

      <asp:Label id="Label1" runat="server"/>
                   
   </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>
    <title>ASP.NET Example</title>
<script language="VB" runat="server">
        Sub DayRender(source As Object, e As DayRenderEventArgs)
            
            If e.Day.IsSelected And e.Day.IsToday Then
                Label1.Text = "You selected today's date."
            End If
        End Sub 'DayRender  
  </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">
 
      <asp:Calendar id="calendar1" runat="server"
           WeekendDayStyle-BackColor="gray"
           OnDayRender="DayRender"/>

      <br /><br />

      <asp:Label id="Label1" runat="server"/>
                   
   </form>
         
</body>
</html>

注解

使用 IsSelected 属性以编程方式确定此类的实例所表示的日期是否在控件中被选定 CalendarUse the IsSelected property to programmatically determine whether the date represented by an instance of this class is selected in the Calendar control. 这使您可以基于该值以编程方式控制日期的外观或行为。This allows you to programmatically control the appearance or behavior of the day, based on this value.

适用于

另请参阅