c# - 关闭包含 WebBrowser 的 WPF UserControl 时出现 FatalExecutionEngineError

Question

我有以下基本 XAML:

<Window x:Class="SomeControl"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid>
        <WebBrowser x:Name="webBrowser"></WebBrowser>
    </Grid>
</Window>

当我尝试关闭包含用户控件的选项卡时，出现以下错误:

Managed Debugging Assistant 'FatalExecutionEngineError' has detected a problem in 'Some.vshost.exe'.

Additional information: The runtime has encountered a fatal error. The address of the error was at 0x7ba6a66f, on thread 0x3bd0. The error code is 0x80131623. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.

我尝试调用 WebBrowser.Dispose() 但它返回相同的错误

Answer 1

我们遇到了同样的问题。我们尝试手动处理控件，但问题仍然存在。最后，我们使用了 System.Windows.Forms 命名空间中的 WindowsFormsHost 组件和 WebBrowser。

<Window x:Class="SomeControl"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid x:Name="_webBrowserGrid>
</Grid>
</Window>

在代码中:

var host = new System.Windows.Forms.Integration.WindowsFormsHost();
System.Windows.Forms.WebBrowser _webBrowser = new System.Windows.Forms.WebBrowser();
host.Child = _webBrowser;
this._webBrowserGrid.Children.Add(host);

_webBrowser.Navigate("http://www.google.com");