Silverlight中的"ShowDialog/DialogResult"替代方案

Question

在WPF中,我经常使用这样的结构:

SomeChildWindow dlg = new SomeChildWindow();
dlg.ShowDialog();
...
//child window is closed either by "this.DialogResult = true;" or just by "Close();"    
//and in Parent window after Child window is closed we can use condition based on that
...

   if (dlg.DialogResult == true)
        {
           //do something
        }

但在Silverlight中,这种方法不起作用.

Silverlight的替代方案是什么？我的意思是如何从Silverlight中的子窗口获得反馈？

Answer 1

您可以通过处理close事件来完成此操作:

SomeChildWindow dlg = new SomeChildWindow();

dlg.Closed += (s, eargs) =>
{
   if(dlg.DialogResult == true)
   {
      //do something
   }
};

dlg.Show();

Answer 2

Silverlight不支持完全模态对话框,这会阻止传统方法检查对话框结果.相反,您需要将事件处理程序分配给将处理对话结果的对话框.活动是ChildWindow.Closed.

然后ChildWindow.DialogResult,您可以在该事件处理程序中获取相应的处理方式.

private void OnDialogClosed(object sender, EventArgs args)
{
   var window = (ChildWindow)sender;
   if (window.DialogResult ?? false)
   {
   }
   else
   {
   }
}