5

基于这个答案，我创建了一个自定义DialogHandler来处理从 WebBrowser 控件中弹出的 Javascript 警报框。

Handler附加到继承的 WatiN浏览IE器，称为ExtendedIeBrowser.

由于未知原因，watin 的 DialogHandler 干扰了 Winforms SaveFiledialogs。通过SaveFileDialog返回 DialogResult.Cancel 会自动关闭。奇怪的是，Handle()自定义 Handler 的 永远不会被调用。OnlyCanHandle()被调用（两次）并返回false，因此根本不应该处理对话框，因此它应该保持打开状态。

我能做些什么来改变克服这种奇怪的行为吗？

这是ExtendedIeBrowser来源：

public class ExtendedIeBrowser : IE
{
    private IntPtr hwnd;
    public ExtendedIeBrowser(WebBrowser webBrowserControl) : base(webBrowserControl.ActiveXInstance, false)
    {
    }

    public void Initialize(WebBrowser webBrowserControl)
    {
        hwnd = webBrowserControl.FindForm().Handle;
        StartDialogWatcher();
    }

    public override IntPtr hWnd { get { return hwnd; } }

    protected override void Dispose(bool disposing)
    {
        hwnd = IntPtr.Zero;
        base.Dispose(disposing);
    }
}

遵循CustomPopupDialogHandler来源： 

class CustomPopupDialogHandler : ReturnDialogHandler
{
    protected static Logger _logger = LogManager.GetCurrentClassLogger();

    public override bool HandleDialog(Window window)
    {
        bool handled = false;
        try
        {
            var button = GetWantedButton(window);
        if (button != null)
        {
            button.Click();
        }
            handled = true;
        }
        catch (Exception ex)
        {
            _logger.ErrorException("HandleDialog", ex);
        }
        return handled;
    }

    public override bool CanHandleDialog(Window window)
    {
        bool canHandle = false;
        try
        {
        canHandle = GetWantedButton(window) != null;
        }
        catch (Exception ex)
        {
            _logger.ErrorException("CanHandleDialog", ex);
        }
        return canHandle;
    }

    private WinButton GetWantedButton(Window window)
    {
        WinButton button = null;
        try
        {
            if (window.Title.Contains("Windows Internet Explorer") || window.Title.Contains("Message from webpage"))
            {
                var windowButton = new WindowsEnumerator().GetChildWindows(window.Hwnd, w => w.ClassName == "Button" && (new WinButton(w.Hwnd).Title.Contains("Leave") || new WinButton(w.Hwnd).Title.Contains("OK")).FirstOrDefault();
                if (windowButton != null)
                {
                    string s = windowButton.Title;
                    button = new WinButton(windowButton.Hwnd);
                }
            }
        }
        catch (Exception ex)
        {
            _logger.ErrorException("GetWantedButton", ex);
        }
        return button;
    }
}
4

1 回答 1

0

尝试这个：

WatiN.Core.Settings.AutoCloseDialogs = false;

默认情况下设置为true。

于 2012-06-27T11:17:15.393 回答