Why is it not possible to catch MissingMethodException?

Question

I have a dependency on .NET 2.0 SP2 in my ClickOnce deployed application (the ApplicationDeployment.CurrentDeployment.CheckForDetailedUpdate(false) method is SP

Answer 1

Exception is thrown on JIT compilation step, so you didn't step into method. Try this version:

    private bool CheckDotNet2SP()
    {
        try
        {
            CheckImpl();
            return true;
        }
        catch (MissingMethodException)
        {
            return false;
        }
    }

    [MethodImpl(MethodImplOptions.NoInlining)]
    private void CheckImpl()
    {
        using (var wh = new ManualResetEvent(true))
            wh.WaitOne(1);
    }