SelectedDatesCollection.Count 屬性

  • 參考

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

取得 SelectedDatesCollection 集合中 DateTime 物件的數目。

public:
 property int Count { int get(); };
public int Count { get; }
member this.Count : int
Public ReadOnly Property Count As Integer

屬性值

Int32

DateTime 中 SelectedDatesCollection 物件的數目。

實作

Count

範例

下列程式碼範例示範如何使用 Count 屬性來判斷集合中的 SelectedDatesCollection 日期數目。 請注意， SelectedDates 控制項的 Calendar 屬性是 類別的 SelectedDatesCollection 實例。

<%@ 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>

備註

使用這個屬性來決定集合中的 SelectedDatesCollection 日期數目。 在 Count 逐一查看集合以判斷上限時，通常會使用 屬性。

適用於

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