WPF MVVM WebBrowser dispose

Question

I am having WebBrowser in my WPF application. I use it for viewing pdf files. But after 50 files are viewed the app throws an exception. So we decided to dispose webbrowser before opening next pdf. The thing is I do not know how exactly to do that. When I dispose webbrowser it is unbinded and no pdf is viewed anymore. It makes sence, but how to do that correctly? Here is my code:

public static void BindableSourcePropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
    {
        WebBrowser browser = o as WebBrowser;
        if (browser != null)
        {
            try
            {
                browser.Dispose();
                browser = null;
                browser = new WebBrowser();
            }
            catch
            {
            }

            string uri = e.NewValue as string;


            try
            {
                if (uri != null)
                {
                    browser.Navigate(new Uri(uri, UriKind.Absolute));
                }
            }
            catch (Exception exception)
            {
                ExceptionPolicy.HandleException(exception, ExceptionPolicies.General);
            }
        }
    }

And xaml part:

<WebBrowser Grid.Row="0" Behaviour:WebBrowserBehaviour.BindableSource="{Binding WebBrowserData}" 
                LoadCompleted="WebBrowser_LoadCompleted" />

Answer 1

Basically the problem sounds like you have a memory leak. To help identify it you should use software designed that that purpose. RedAnt has a nice library that I believe has a free trial you can use to help determine what the exact cause of the issue is.

To dispose after loading you can do what is suggested here: How to dispose of a web browser control after show

But I would suggest you prove that is the problem first by watching the memory or using a tool designed to help detect leaks.