SelectedDatesCollection.Contains(DateTime) Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

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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

Parameters

date: DateTime

The DateTime to search for in the SelectedDatesCollection.

Returns

Boolean

true if the SelectedDatesCollection contains the specified DateTime; otherwise, false.

Examples

The following code example demonstrates how to use the Contains method to determine whether the SelectedDatesCollection collection contains the specified System.DateTime object.

ASP.NET (C#)

<%@ 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>

Remarks

Use this method to determine whether the SelectedDatesCollection collection contains the specified System.DateTime object.

Applies to

Proizvod	Verzije
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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