DayRenderEventHandler 委托
表示处理 Calendar 控件的 DayRender 事件的方法。
**命名空间:**System.Web.UI.WebControls
**程序集:**System.Web（在 system.web.dll 中）
语法
声明
Public Delegate Sub DayRenderEventHandler ( _
sender As Object, _
e As DayRenderEventArgs _
)
用法
Dim instance As New DayRenderEventHandler(AddressOf HandlerMethod)
public delegate void DayRenderEventHandler (
Object sender,
DayRenderEventArgs e
)
public delegate void DayRenderEventHandler (
Object^ sender,
DayRenderEventArgs^ e
)
/** @delegate */
public delegate void DayRenderEventHandler (
Object sender,
DayRenderEventArgs e
)
JScript 支持使用委托，但不支持进行新的声明。
参数
- sender
事件源。
- e
包含事件数据的 DayRenderEventArgs。
备注
尽管对于 Calendar 控件不支持数据绑定，但您可以修改各个日期单元格的内容和格式设置。在网页上显示 Calendar 控件之前，它创建并汇编组成该控件的组件。当创建 Calendar 控件中的每个日期单元格时，均会引发 DayRender 事件。通过在 DayRender 事件的事件处理程序中提供代码，可以在创建日期单元格时控制其内容和格式设置。有关自定义日期单元格内容的更多信息，请参见 OnDayRender。
当创建 DayRenderEventHandler 委托时，将标识处理事件的方法。若要使该事件与事件处理程序相关联，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调用事件处理程序。有关事件处理程序委托的更多信息，请参见 事件和委托。
示例
下面的代码示例演示如何为 DayRender 事件指定和编写处理程序，使所显示月份中日期的背景色为黄色。它还演示如何通过将 System.Web.UI.LiteralControl 控件添加到单元格来自定义单元格的内容。
<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
<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 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" %>
<html>
<head>
<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 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="JScript" AutoEventWireup="True" %>
<html>
<head>
<script language="JScript" runat="server">
function DayRender(source : Object, e : DayRenderEventArgs)
{
// 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 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" %>
<html>
<head>
<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 runat="server">
<h3>Calendar DayRender Example</h3>
<asp:Calendar id="Calendar1"
runat="server">
<WeekendDayStyle BackColor="gray">
</WeekendDayStyle>
</asp:Calendar>
</form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
<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 runat="server">
<h3>Calendar DayRender Example</h3>
<asp:Calendar id="Calendar1"
runat="server">
<WeekendDayStyle BackColor="gray">
</WeekendDayStyle>
</asp:Calendar>
</form>
</body>
</html>
平台
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
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
请参见
参考
System.Web.UI.WebControls 命名空间
DayRenderEventArgs 类
Calendar 类
Calendar.DayRender 事件
TableCell
CalendarDay 类