SelectedDatesCollection.Item[Int32] 属性
定义
重要
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获取 DateTime 集合中位于指定索引位置的 SelectedDatesCollection 对象。
public:
property DateTime default[int] { DateTime get(int index); };public DateTime this[int index] { get; }member this.Item(int) : DateTimeDefault Public ReadOnly Property Item(index As Integer) As DateTime参数
属性值
表示 DateTime 中的元素的 SelectedDatesCollection。
示例
下面的代码示例演示如何使用索引器从SelectedDatesCollection集合中获取System.DateTime对象。 请注意， SelectedDates 控件的属性 Calendar 是类的 SelectedDatesCollection 实例。
<%@ 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 Selection_Change(Object sender, EventArgs e)
{
int current_month = Calendar1.VisibleDate.Month;
int current_year = Calendar1.VisibleDate.Year;
for (int i = 0; i < Calendar1.SelectedDates.Count; i++)
{
if (Calendar1.SelectedDates[i].DayOfWeek == DayOfWeek.Wednesday)
Label1.Text = "Wednesday falls on " +
Calendar1.SelectedDates[i].Month + "/" +
Calendar1.SelectedDates[i].Day + "/" +
Calendar1.SelectedDates[i].Year;
}
if (Calendar1.SelectedDates.Count != 7)
Label1.Text = "";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
OnSelectionChanged="Selection_Change" />
<hr />
Select an entire week <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 Selection_Change(sender As Object, e As EventArgs)
Dim current_month As Integer = Calendar1.VisibleDate.Month
Dim current_year As Integer = Calendar1.VisibleDate.Year
Dim i As Integer
For i = 0 To Calendar1.SelectedDates.Count - 1
If Calendar1.SelectedDates(i).DayOfWeek = DayOfWeek.Wednesday Then
Label1.Text = "Wednesday falls on " & _
Calendar1.SelectedDates(i).Month & "/" & _
Calendar1.SelectedDates(i).Day & "/" & _
Calendar1.SelectedDates(i).Year
End If
Next i
If Calendar1.SelectedDates.Count <> 7 Then
Label1.Text = ""
End If
End Sub
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"
OnSelectionChanged="Selection_Change" />
<hr />
Select an entire week <br /><br />
<asp:Label id="Label1" runat="server" />
</form>
</body>
</html>
注解
使用此索引器可以使用简单的数组表示法在集合中获取集合中的SelectedDatesCollection单个System.DateTime对象。