WPF控制台应用程序不返回提示

我有一个带有以下应用程序类的wpf控制台应用程序：

I've got a wpf "console" application with the following application class:

public partial class App : Application
{
    [DllImport("kernel32.dll", SetLastError = true)]
    static extern bool AttachConsole(uint dwProcessId);

    [DllImport("kernel32.dll", SetLastError = true)]
    static extern bool FreeConsole();

    const uint ATTACH_PARENT_PROCESS = 0x0ffffffff;

    protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);

        AttachConsole(ATTACH_PARENT_PROCESS);

        Console.WriteLine("test1");

        FreeConsole();

        System.Environment.Exit(0);
    }
}

当我从控制台启动时，文本 test1 出现，但控制台光标只是闪烁，并且直到我按Enter才出现提示。我确实删除了StartupURI语句。
如何强制应用程序像控制台应用程序一样运行并在执行后返回提示？ （Windows 7 32位）。

When i start it from the console the text "test1" appears but then the console cursor just blinks and the prompt does not appear until I hit Enter. I did remove the StartupURI statement. How to force the application to behave like a console app and return to prompt after the execution? (Windows 7 32 bit).