Gets or sets whether the popup is currently displaying on the screen.
Assembly: System.Windows (in System.Windows.dll)
Dependency property identifier field: IsOpenProperty
In some cases, the property will return true, even though the popup is not visible. For example, if the Visibility property of the popup is Collapsed, and the property has not been explicitly set to false, the property will return true.
Although it is read-write and technically is settable in XAML, setting a value for in XAML is not typical. In addition, you should not template-bind to the property. Instead, you should set a name for the popup by using the x:Name attribute and set in code.
The following example shows how to use the property to remove a popup from the screen. The popup content is created inline for conciseness, but you would typically create this content in a separate user control and use an instance of that control as the child of the popup.
' Create the popup object. Private p As New Popup() Private Sub showPopup_Click(ByVal sender As Object, ByVal e As RoutedEventArgs) ' Create some content to show in the popup. Typically you would ' create a user control. Dim border As New Border() border.BorderBrush = New SolidColorBrush(Colors.Black) border.BorderThickness = New Thickness(5) Dim panel1 As New StackPanel() panel1.Background = New SolidColorBrush(Colors.LightGray) Dim button1 As New Button() button1.Content = "Close" button1.Margin = New Thickness(5) AddHandler button1.Click, AddressOf button1_Click Dim textblock1 As New TextBlock() textblock1.Text = "The popup control" textblock1.Margin = New Thickness(5) panel1.Children.Add(textblock1) panel1.Children.Add(button1) border.Child = panel1 ' Set the Child property of Popup to the border ' which contains a stackpanel, textblock and button. p.Child = border ' Set where the popup will show up on the screen. p.VerticalOffset = 25 p.HorizontalOffset = 25 ' Open the popup. p.IsOpen = True End Sub Private Sub button1_Click(ByVal sender As Object, _ ByVal e As RoutedEventArgs) ' Close the popup. p.IsOpen = False End Sub
<UserControl x:Class="Popup2.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" FontFamily="Trebuchet MS" FontSize="11" Width="200" Height="200"> <StackPanel x:Name="LayoutRoot" Background="White"> <Button Width="100" Height="50" x:Name="showPopup" Click="showPopup_Click" Content="Show Popup" /> </StackPanel> </UserControl>
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.