DayRenderEventHandler 委托

参考

定义

命名空间:: System.Web.UI.WebControls

程序集:: System.Web.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

表示处理 DayRender 控件的 Calendar 事件的方法。

public delegate void DayRenderEventHandler(System::Object ^ sender, DayRenderEventArgs ^ e);

public delegate void DayRenderEventHandler(object sender, DayRenderEventArgs e);

type DayRenderEventHandler = delegate of obj * DayRenderEventArgs -> unit

Public Delegate Sub DayRenderEventHandler(sender As Object, e As DayRenderEventArgs)

参数

sender: Object

事件源。

e: DayRenderEventArgs

包含事件数据的 DayRenderEventArgs。

示例

下面的代码示例演示如何指定和编码事件的处理程序， DayRender 使显示月份中的日期的背景色为黄色。它还演示了如何通过向单元格添加 System.Web.UI.LiteralControl 控件来自定义单元格的内容。

<%@ 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>DayRender Event Example</title>
<script language="C#" runat="server">
   
      void DayRender(Object source, DayRenderEventArgs e) 
      {

         // Change the background color of the days in the month
         // to yellow.
         if (!e.Day.IsOtherMonth && !e.Day.IsWeekend)
            e.Cell.BackColor=System.Drawing.Color.Yellow;

         // Add custom text to cell in the Calendar control.
         if (e.Day.Date.Day == 18)
            e.Cell.Controls.Add(new LiteralControl("<br />Holiday"));

      }

   </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">

      <h3>DayRender Event Example</h3>
 
      <asp:Calendar id="calendar1" 
                    OnDayRender="DayRender"
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>
                   
   </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>DayRender Event Example</title>
<script language="VB" runat="server">
   
        Sub DayRender(source As Object, e As DayRenderEventArgs)
            
            ' Change the background color of the days in the month
            ' to yellow.
            If Not e.Day.IsOtherMonth And Not e.Day.IsWeekend Then
                e.Cell.BackColor = System.Drawing.Color.Yellow
            End If 
            ' Add custom text to cell in the Calendar control.
            If e.Day.Date.Day = 18 Then
                e.Cell.Controls.Add(New LiteralControl(ChrW(60) & "br" & ChrW(62) & "Holiday"))
            End If 
        End Sub 'DayRender 

   </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">

      <h3>DayRender Event Example</h3>
 
      <asp:Calendar id="calendar1" 
                    OnDayRender="DayRender"
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>
                   
   </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 DayRender Example</title>
<script runat="server">
   
      void DayRender(Object sender, DayRenderEventArgs e) 
      {

         // Change the background color of the days in the month
         // to yellow.
         if (!e.Day.IsOtherMonth && !e.Day.IsWeekend)
         {
            e.Cell.BackColor=System.Drawing.Color.Yellow;
         }

         // Add custom text to cell in the Calendar control.
         if (e.Day.Date.Day == 18)
         {
            e.Cell.Controls.Add(new LiteralControl("<br />Holiday"));
         }

      }

      void Page_Load(Object sender, EventArgs e)
      {

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

      }

   </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">

      <h3>Calendar DayRender Example</h3>
 
      <asp:Calendar id="Calendar1" 
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>
                   
   </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 DayRender Example</title>
<script runat="server">
   
      Sub DayRender(sender as Object, e As DayRenderEventArgs) 

         ' Change the background color of the days in the month
         ' to yellow.
         If (Not e.Day.IsOtherMonth) And (Not e.Day.IsWeekend) Then
        
            e.Cell.BackColor=System.Drawing.Color.Yellow
         
         End If

         ' Add custom text to cell in the Calendar control.
         If e.Day.Date.Day = 18 Then
         
            e.Cell.Controls.Add(New LiteralControl("<br />Holiday"))
         
         End If

      End Sub

      Sub Page_Load(sender As Object, e As EventArgs)

         ' Manually register the event-handling method for the DayRender  
         ' event of the Calendar control.
         AddHandler Calendar1.DayRender, AddressOf DayRender

      End Sub

   </script>
 
</head>
 
<body>
 
   <form id="form1" runat="server">

      <h3>Calendar DayRender Example</h3>
 
      <asp:Calendar id="Calendar1" 
                    runat="server">

         <WeekendDayStyle BackColor="gray">
         </WeekendDayStyle>

      </asp:Calendar>
                   
   </form>
          
</body>
</html>

注解

尽管控件不支持 Calendar 数据绑定，但可以修改单个日期单元格的内容和格式。在 Calendar 控件显示在网页上之前，它会创建并组合构成控件的组件。创建 DayRender 控件中的每个日期单元格时， Calendar 将引发事件。通过在事件的事件处理程序 DayRender 中提供代码，可以在创建日期单元格时控制日期单元格的内容和格式。有关自定义日期单元格内容的详细信息，请参阅 OnDayRender。

创建 DayRenderEventHandler 委托时，需要标识将处理该事件的方法。若要将事件与事件处理程序关联，请将该委托的一个实例添加到事件中。除非移除了该委托，否则每当发生该事件时就会调用事件处理程序。有关事件处理程序委托的详细信息，请参阅处理和引发事件。

扩展方法

GetMethodInfo(Delegate)

获取指示指定委托表示的方法的对象。

适用于

DayRenderEventHandler 委托

定义

参数

示例

注解

扩展方法

适用于

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