Is there an existing issue for this?
CefSharp Version
120.1.80
Operating System
Windows 11
Architecture
x64
.Net Version
.Net 6.0
Implementation
WinForms
Reproduction Steps
- Run CefSharp.WinForms.Example.netcore
- Show popup window
- Close popup window
- Repeat 2 - 3.
Expected behavior
Expectations is that it will not crash when you close the popup window
Actual behavior
Regression?
No response
Known Workarounds
Is this due to DoClose in LifeSpanHandler.cs?
Excluding control.Dispose() from InnvokeSyncOnUiThreadIfRequired stops crashing.
Does this problem also occur in the CEF Sample Application
No
Other information
html source
<!DOCTYPE HTML>
<html>
<a href="javascript:popup_open()" id="open">Popup!</a>
<a href="javascript:popup_close()" id="close">Close!</a>
<script>
const popup_open = () => {
window.open("index.html?pop=on")
}
const popup_close = () => {
parent.window.close()
}
const params = new URLSearchParams(document.location.search)
if (params.has("pop")) {
document.getElementById("open").style.display = "none"
document.title = "Popup!!"
} else {
document.getElementById("close").style.display = "none"
document.title = "Popup Main"
}
</script>
</html>edit source code
CefSharp.WinForms\Handler\LifeSpanhandler.cs
control.InvokeSyncOnUiThreadIfRequired(new Action(() =>
{
onPopupDestroyed?.Invoke(control, browser);
//control.Dispose(); // Comment out!!
}));
// Add
control.InvokeOnUiThreadIfRequired(new Action(() =>
{
control.Dispose();
}));CefSharp.WinForms.Example\BrowserTabUserControl.cs
.OnPopupDestroyed((ctrl, popupBrowser) =>
{
//If we docked DevTools (hosted it ourselves rather than the default popup)
//Used when the BrowserTabUserControl.ShowDevToolsDocked method is called
if (popupBrowser.MainFrame.Url.Equals("devtools://devtools/devtools_app.html"))
{
//Dispose of the parent control we used to host DevTools, this will release the DevTools window handle
//and the ILifeSpanHandler.OnBeforeClose() will be call after.
ctrl.Dispose();
}
else
{
//If browser is disposed or the handle has been released then we don't
//need to remove the tab in this example. The user likely used the
// File -> Close Tab menu option which also calls BrowserForm.RemoveTab
if (!ctrl.IsDisposed && ctrl.IsHandleCreated)
{
if (ctrl.FindForm() is BrowserForm owner)
{
owner.RemoveTab(ctrl);
}
//ctrl.Dispose(); // Comment out!!
}
}
})
Is there an existing issue for this?
CefSharp Version
120.1.80
Operating System
Windows 11
Architecture
x64
.Net Version
.Net 6.0
Implementation
WinForms
Reproduction Steps
Expected behavior
Expectations is that it will not crash when you close the popup window
Actual behavior
Regression?
No response
Known Workarounds
Is this due to DoClose in LifeSpanHandler.cs?
Excluding control.Dispose() from InnvokeSyncOnUiThreadIfRequired stops crashing.
Does this problem also occur in the CEF Sample Application
No
Other information
html source
edit source code
CefSharp.WinForms\Handler\LifeSpanhandler.cs
CefSharp.WinForms.Example\BrowserTabUserControl.cs