SelectedDatesCollection.Contains(DateTime) メソッド

定義

指定した SelectedDatesCollection オブジェクトが DateTime コレクションに格納されているかどうかを示す値を返します。Returns a value indicating whether the SelectedDatesCollection collection contains the specified DateTime object.

public:
 bool Contains(DateTime date);
public bool Contains (DateTime date);
member this.Contains : DateTime -> bool
Public Function Contains (date As DateTime) As Boolean

パラメーター

date
DateTime

DateTime で検索する SelectedDatesCollectionThe DateTime to search for in the SelectedDatesCollection.

戻り値

指定した DateTimeSelectedDatesCollection に含まれている場合は true。それ以外の場合は falsetrue if the SelectedDatesCollection contains the specified DateTime; otherwise, false.

次のコード例は、 Containsメソッドを使用して、指定したSystem.DateTimeオブジェクトがコレクションにSelectedDatesCollection含まれているかどうかを確認する方法を示しています。The following code example demonstrates how to use the Contains method to determine whether the SelectedDatesCollection collection contains the specified System.DateTime object.

<%@ 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) 
       {
   
          int current_month = Calendar1.VisibleDate.Month;
          int current_year = Calendar1.VisibleDate.Year;
           
          Calendar1.VisibleDate = Calendar1.TodaysDate;
 
          DateTime date = new DateTime(current_year, current_month, 15);
 
          if (Calendar1.SelectedDates.Contains(date)) 
             Label1.Text = "Yes, you selected the 15th!!";
          else
             Label1.Text = "No, you didn't select the 15th!!";
             
       }
 
    </script>
 
 </head>     
 <body>
 
    <form id="form1" runat="server">
 
       <asp:Calendar ID="Calendar1" runat="server"  
            SelectionMode="DayWeekMonth"/>
 
       <hr />
 
       Select dates on the Calendar and click the button below <br />
       to validate that the 15th on the month was selected <br /><br /> 
 
       <asp:Button id="Button1"
            text="Validate the 15th" 
            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)
            
            Dim current_month As Integer = Calendar1.VisibleDate.Month
            Dim current_year As Integer = Calendar1.VisibleDate.Year
            
            Calendar1.VisibleDate = Calendar1.TodaysDate
            
            Dim theDate As New DateTime(current_year, current_month, 15)
            
            If Calendar1.SelectedDates.Contains(theDate) Then
                Label1.Text = "Yes, you selected the 15th!!"
            Else
                Label1.Text = "No, you didn't select the 15th!!"
            End If 
        End Sub
 
    </script>
 
 </head>     
 <body>
 
    <form id="form1" runat="server">
 
       <asp:Calendar ID="Calendar1" runat="server"  
            SelectionMode="DayWeekMonth"/>
 
       <hr />
 
       Select dates on the Calendar and click the button below <br />
       to validate that the 15th on the month was selected <br /><br /> 
 
       <asp:Button id="Button1"
            text="Validate the 15th" 
            OnClick="Button_Click"  
            runat="server"  /> <br /><br />
 
       <asp:Label id="Label1" runat="server" />
 
    </form>
 </body>
 </html>
    

注釈

このメソッドを使用して、 SelectedDatesCollection指定したSystem.DateTimeオブジェクトがコレクションに含まれているかどうかを確認します。Use this method to determine whether the SelectedDatesCollection collection contains the specified System.DateTime object.

適用対象

こちらもご覧ください