启动画面 +主窗口
我有一个 C# 应用程序，当我在加载主窗口之前使用启动屏幕时，当涉及多线程/后台工作人员时，它会遇到麻烦。
我的代码看起来像这样：
[STAThread]
private static void Main()
{
.. do some stuff
ShowSplash(); // where i show a splash screen and load some stuff
...
作为 ShowSplash 的最后一步，我执行以下操作：
new MyCabApplication<MyMainWorkItem, MDIParentForm>().Run(); -- where i load the form through cab.
问题是，当我这样做时，我得到以下异常：
在单个线程上启动第二个消息循环是不是有效的操作。使用 Form.ShowDialog 代替
知道我能做什么吗？
这是我的 showsplash 函数：
private static DialogResult ShowSplash(AutoResetEvent controller)
{
// create and register splash screen
splashScreen = new PointSplashScreen();
Application.Run(splashScreen);
return DialogResult.OK;
}
I have a C# application which runs into trouble when it comes to multi-threads / backgroundworkers when I'm using a splash screen before I load the main window.
my code look something like this:
[STAThread]
private static void Main()
{
.. do some stuff
ShowSplash(); // where i show a splash screen and load some stuff
...
As the last step of ShowSplash, I do the following:
new MyCabApplication<MyMainWorkItem, MDIParentForm>().Run(); -- where i load the form through cab.
The problem is that when I do that I get the following exception:
Starting a second message loop on a single thread is not a valid operation. Use Form.ShowDialog instead
Any idea what can I do?
Here is my showsplash function:
private static DialogResult ShowSplash(AutoResetEvent controller)
{
// create and register splash screen
splashScreen = new PointSplashScreen();
Application.Run(splashScreen);
return DialogResult.OK;
}
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两种解决方案：
Application.Run，只需创建表单的新实例，然后调用ShowDialog。调用ShowDialog()后，将new MyCabApplication().Run(); 移至启动屏幕之外。如果不应始终运行此代码，您可以检查启动屏幕的属性。Application.Run(Form)，而是使用Application.Run(ApplicationContext)。您将需要创建一个新的ApplicationContext并将代码移至此处。解决方案 1 更容易。
Two solutions:
Application.Run, just create a new instance of the form and then callShowDialog. Movenew MyCabApplication<MyMainWorkItem, MDIParentForm>().Run();outside of the Splash Screen after the call toShowDialog(). You can check properties of the Splash screen if this code should not always be run.Application.Run(Form), useApplication.Run(ApplicationContext). You will need to create a newApplicationContextand move your code there.Solution 1 is easier.
听起来
MyCabApplication扩展了 Application。 Run 方法通过启动处理窗口的消息循环来启动 WinForm 应用程序消息。因为您已经在显示 UI，所以已经有一个消息循环正在运行，因此您无法启动另一个消息循环。要显示主窗体，请为其创建一个新实例并调用
Show()：It sounds like
MyCabApplicationextends Application. The Run method starts a WinForm application by starting a message loop that handles window messages.Because you are already showing UI, there is already a message loop running, so you cannot start another. To get your main form to show up, make a new instance of it and call
Show():