HtmlWindow.IsClosed Property
Definition
Important
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Gets a value indicating whether this window is open or closed.
public:
property bool IsClosed { bool get(); };public bool IsClosed { get; }member this.IsClosed : boolPublic ReadOnly Property IsClosed As BooleanProperty Value
true if the window is still open on the screen; otherwise, false.
Examples
The following code example opens a window, and closes it if the user has not used it in the past five minutes. The code example requires that your form has a WebBrowser control named WebBrowser1, a Button named Button1, and a Timer class named Timer1.
private void ResetFrames()
{
if (!(webBrowser1.Document == null))
{
HtmlElement frameElement = null;
HtmlWindow docWindow = webBrowser1.Document.Window;
foreach (HtmlWindow frameWindow in docWindow.Frames)
{
frameElement = frameWindow.WindowFrameElement;
String originalUrl = frameElement.GetAttribute("SRC");
if (!originalUrl.Equals(frameWindow.Url.ToString()))
{
frameWindow.Navigate(new Uri(originalUrl));
}
}
}
}
Private Sub ResetFrames()
If (WebBrowser1.Document IsNot Nothing) Then
Dim FrameElement As HtmlElement
Dim DocWindow As HtmlWindow = WebBrowser1.Document.Window
For Each FrameWindow As HtmlWindow In DocWindow.Frames
FrameElement = FrameWindow.WindowFrameElement
Dim OriginalUrl As String = FrameElement.GetAttribute("SRC")
If (Not OriginalUrl.Equals(FrameWindow.Url.ToString())) Then
FrameWindow.Navigate(New Uri(OriginalUrl))
End If
Next
End If
End Sub
Remarks
If the HtmlWindow has been closed by the user or by way of a call to the Close method, attempting to navigate to a new URL or access the window's document will result in an error. Use this property to determine whether it is safe to call properties and methods on the current window object.
