SelectedDatesCollection.Count 属性
定义
重要
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获取 SelectedDatesCollection 集合中 DateTime 对象的数目。
public:
property int Count { int get(); };public int Count { get; }member this.Count : intPublic ReadOnly Property Count As Integer属性值
DateTime 中 SelectedDatesCollection 对象的数目。
实现
示例
下面的代码示例演示如何使用 属性 Count 来确定集合中的 SelectedDatesCollection 日期数。 请注意， SelectedDates 控件的 Calendar 属性是 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 Button_Click(Object sender, EventArgs e)
{
if (Calendar1.SelectedDates.Count > 0)
{
Label1.Text = "Selected date(s) are: ";
for (int i = 0; i < Calendar1.SelectedDates.Count; i++)
{
Label1.Text += " " + Calendar1.SelectedDates[i].Day.ToString();
}
}
else
Label1.Text = "No dates selected!!";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"/>
<hr />
<asp:Button id="Button1"
text="Display Selected Dates"
OnClick="Button_Click"
runat="server" /> <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 Button_Click(sender As Object, e As EventArgs)
If Calendar1.SelectedDates.Count > 0 Then
Label1.Text = "Selected date(s) are: "
Dim i As Integer
For i = 0 To Calendar1.SelectedDates.Count - 1
Label1.Text &= " " &+ Calendar1.SelectedDates(i).Day.ToString()
Next i
Else
Label1.Text = "No dates selected!!"
End If
End Sub
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:Calendar ID="Calendar1" runat="server"
SelectionMode="DayWeekMonth"/>
<hr />
<asp:Button id="Button1"
text="Display Selected Dates"
OnClick="Button_Click"
runat="server" /> <br /><br />
<asp:Label id="Label1" runat="server" />
</form>
</body>
</html>
注解
使用此属性可确定集合中的 SelectedDatesCollection 日期数。 在 Count 循环访问集合以确定上限时，通常会使用 属性。
