SelectedDatesCollection.Item[Int32] Eigenschaft

  • Referenz

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Ruft ein DateTime-Objekt am angegebenen Index in der SelectedDatesCollection-Auflistung ab.

public:
 property DateTime default[int] { DateTime get(int index); };
public DateTime this[int index] { get; }
member this.Item(int) : DateTime
Default Public ReadOnly Property Item(index As Integer) As DateTime

Parameter

index
Int32

Ein Ordinalindexwert, der angibt, welche DateTime zurückgegeben werden soll.

Eigenschaftswert

DateTime

Eine DateTime, die ein Element in SelectedDatesCollection darstellt.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie Sie den Indexer verwenden, um ein System.DateTime Objekt aus einer SelectedDatesCollection Auflistung abzurufen. Beachten Sie, dass die SelectedDates -Eigenschaft des Calendar -Steuerelements eine Instanz der SelectedDatesCollection -Klasse ist.

<%@ 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>

Hinweise

Verwenden Sie diesen Indexer, um ein einzelnes System.DateTime Objekt in der SelectedDatesCollection Auflistung am angegebenen Index mithilfe einer einfachen Arraynotation abzurufen.

Gilt für:

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