Is there a way to know if a WPF application is shutting down?

I am writing some code that checks that my resources are properly cleaned up.

When the application is shutdown, resources are not c开发者_StackOverflow社区leaned up, which is fine. However, this makes my check code fail.

Is there a way to know if a WPF application is in the process of shutting down? - Something like Application.Current.IsShuttingDown?

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There is Application.Exit event, you should be able to do with that.

If you really need it to be a property, then create a property into your App class (your class inheriting Windows.Application) and set it to true in with the Application.Exit event.

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    /// <summary>
    /// Hack to check if the application is shutting down.
    /// </summary>
    public static bool IsShuttingDown()
    {
        try
        {
            Application.Current.ShutdownMode = Application.Current.ShutdownMode;
            return false;
        }
        catch (Exception)
        {
            return true;
        }
    }

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just add this to your App.cs file

    public bool IsShuttingDown { get; private set; }

    public new void Shutdown(int exitCode = 0)
    {
        this.IsShuttingDown = true;
        base.Shutdown(exitCode);
    }