从线程触发时，C＃ShowDialog（）不会阻止主窗体
[英]C# ShowDialog() doesn't block main form when triggered from thread
问题描述
I have a Windows Forms application with a main form and several background threads. 
我有一个具有主窗体和几个后台线程的Windows Forms应用程序。 In order to show "nice" messages I implemented a form to be shown as a modal dialog using ShowDialog() . 为了显示“不错”的消息，我使用ShowDialog()实现了一种形式，可以显示为模式对话框。
All of the calls to ShowDialog() are implemented on form level of the main form (and not on thread level), but sometimes I trigger an event from a thread which will be handled on form level of the main form. 对ShowDialog()所有调用都是在主窗体的窗体级别（而不是线程级别）上实现的，但是有时我会触发线程中的事件，该事件将在主窗体的窗体级别上进行处理。 In those cases, the dialog is no longer modal ... the main form is not blocked. 在这种情况下，对话框不再是模态对话框...主窗体不会被阻止。 When the call to ShowDialog() is not triggered from a thread, it is modal as required. 当未从线程触发对ShowDialog()的调用时，根据需要它是模态的。
How can I make sure that every call to ShowDialog() will block the main form? 如何确保对ShowDialog（）的每次调用都会阻止主窗体？
1 个解决方案
解决方案1
7 已采纳 2014-02-10 14:52:13
How can I make sure that every call to
ShowDialog()will block the main form?ShowDialog()每次调用都会阻止主窗体？
Execute the calls to ShowDialog() on the main thread. 在主线程上执行对ShowDialog()的调用。 If you need to invoke them from a different thread, use Invoke() to run them on the main thread. 如果需要从其他线程调用它们，请使用Invoke()在主线程上运行它们。
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