SelectedDatesCollection.Count プロパティ

定義

DateTime コレクション内の SelectedDatesCollection オブジェクトの数を取得します。Gets the number of DateTime objects in the SelectedDatesCollection collection.

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

プロパティ値

DateTime 内の SelectedDatesCollection オブジェクトの数。The number of DateTime objects in the SelectedDatesCollection.

実装

次のコード例では、 Countプロパティを使用して、 SelectedDatesCollectionコレクション内の日付の数を確認する方法を示します。The following code example demonstrates how to use to the Count property to determine the number of dates in the SelectedDatesCollection collection. コントロールCalendarSelectedDates プロパティSelectedDatesCollectionは、クラスのインスタンスであることに注意してください。Note that the SelectedDates property of the Calendar control is an instance of the SelectedDatesCollection class.

<%@ 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>
 

注釈

SelectedDatesCollectionコレクション内の日付の数を決定するには、このプロパティを使用します。Use this property to determine the number of dates in the SelectedDatesCollection collection. Countプロパティは、コレクションを反復処理して上限を決定するときによく使用されます。The Count property is often used when iterating through the collection to determine the upper bound.

適用対象

こちらもご覧ください