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WPF判斷當前窗體是否為模態

1、使用System.Windows.Interop.ComponentDispatcher.IsThreadModal來判斷

參照：https://social.msdn.microsoft.com/Forums/vstudio/en-US/c95f1acb-5dee-4670-b779-b07b06afafff/where-is-modal-property?forum=wpf

注意事項：

參照：http://stackoverflow.com/questions/368926/how-do-i-determine-if-a-wpf-window-is-modal

1、Works not immediately after ShowModal is called. Some events still cannot tell if modal

2、This doesn't work if a modal dialog is showing this modeless dialog!

2、使用反射

eg:新建一個拓展方法

1 public static bool IsModal(this Window window)
2 {
3     return(bool)typeof(Window).GetField("_showingAsDialog", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(window);
4 }

改進為：

1 public static bool IsModal(this Window window)
2 {
3     var filedInfo=typeof(Window).GetField("_showingAsDialog", BindingFlags.Instance | BindingFlags.NonPublic);
4 
5     return filedInfo!=null&&(bool)filedInfo.GetValue(window);
6 }

參照：http://stackoverflow.com/questions/368926/how-do-i-determine-if-a-wpf-window-is-modal

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posted @ 2015-06-02 17:33 天命小豬閱讀(988) 評論(0) 收藏舉報

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WPF判斷當前窗體是否為模態

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