WPF Window.ShowDialog（）在第二次调用时立即返回

Question

In my app I have the following code:

void ShowCaptchaWindow(Exception ex)
{
    var window = new CaptchaWindow(ex);
    window.Left = 800;
    window.Top = 500;
    window.ShowDialog();

    text = window.CaptchaText;
}

This code used to work fine before, but now I got problems with it. Strange thing is that I dont remember that I've changed anything.

When I call the function for the first time - everything is Ok, window is showing and function waits for it to close. But when I call this function for the second time - window doesnt displayed and I immediately goes to the next line.

Answer 1

问题是我在显示应用程序的MainWindow之前显示了CaptchaWindow。