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Control.VisibleChanged Event

Occurs when the Visible property value changes.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

'Declaration
Public Event VisibleChanged As EventHandler
'Usage
Dim instance As Control
Dim handler As EventHandler

AddHandler instance.VisibleChanged, handler

/** @event */
public void add_VisibleChanged (EventHandler value)

/** @event */
public void remove_VisibleChanged (EventHandler value)

JScript supports the use of events, but not the declaration of new ones.

This event is raised if the Visible property is changed by either a programmatic modification or user interaction.

For more information about handling events, see Consuming Events.

The following code example raises the VisibleChanged event when the Visible property value of the Label control has changed.

Private Sub Button_HideLabel(ByVal sender As Object, ByVal e As EventArgs)
   myLabel.Visible = False
End Sub 'Button_HideLabel


Private Sub AddVisibleChangedEventHandler()
   AddHandler myLabel.VisibleChanged, AddressOf Label_VisibleChanged
End Sub 'AddVisibleChangedEventHandler


Private Sub Label_VisibleChanged(ByVal sender As Object, ByVal e As EventArgs)
   MessageBox.Show("Visible change event raised!!!")
End Sub 'Label_VisibleChanged

private void Button_HideLabel(Object sender, EventArgs e)
{
    myLabel.set_Visible(false);
} //Button_HideLabel

private void AddVisibleChangedEventHandler()
{
    myLabel.add_VisibleChanged(new EventHandler(this.Label_VisibleChanged));
} //AddVisibleChangedEventHandler

private void Label_VisibleChanged(Object sender, EventArgs e)
{
    MessageBox.Show("Visible change event raised!!!");
} //Label_VisibleChanged

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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