Artikel
11/18/2011

Calendar.DisplayDateChanged Event

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Occurs when the DisplayDate property is changed.

Namespace: System.Windows.Controls
Assembly: System.Windows.Controls (in System.Windows.Controls.dll)

Syntax

'Declaration
Public Event DisplayDateChanged As EventHandler(Of CalendarDateChangedEventArgs)

public event EventHandler<CalendarDateChangedEventArgs> DisplayDateChanged

<sdk:Calendar DisplayDateChanged="eventhandler"/>

Remarks

This event occurs after DisplayDate is assigned its new value.

Examples

The following event handler updates a TextBox with information from the DisplayDateChanged event. This example is part of a larger example available in the Calendar overview.

'Updates a TextBlock with information from the DisplayDateChanged event. 
'This will happen every time the visible month changes, whether triggered 
'by user input or by code. 
Private Sub cal_DisplayDateChanged(ByVal sender As Object, ByVal e As CalendarDateChangedEventArgs) Handles cal.DisplayDateChanged
    'This should never occur unless DisplayDate is explicitly set to nothing. 
    If e.RemovedDate Is Nothing Then
        text1.Text = "Changed DisplayDate from nothing to " + e.AddedDate + "!"
    Else
        text1.Text = "Changed DisplayDate from " + e.RemovedDate + " to " + e.AddedDate + "!"
    End If
End Sub

//Updates a TextBlock with information from the DisplayDateChanged event.
//This will happen every time the visible month changes, whether triggered
//by user input or by code.
void cal_DisplayDateChanged(object sender, CalendarDateChangedEventArgs e)
{
    //This should never occur unless DisplayDate is explicitly set to null.
    if (e.RemovedDate == null)
    {
        text1.Text = "Changed DisplayDate from null to " + e.AddedDate + "!";
    }
    else
    {
        text1.Text = "Changed DisplayDate from " + e.RemovedDate + " to " + e.AddedDate + "!";
    }
}

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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