DialogResult的可以创建并显示为对话窗口后，只设置 [英] DialogResult can be set only after Window is created and shown as dialog

问题描述

我有一个主WPF窗口，当按钮被点击窗口上，一个命令被执行
假设该命令是SendToTableCommand

I have a main WPF window, mywindow.showDialog when a button is clicked on the window, a command is executed let's say the command is SendToTableCommand

protected virtual void SendToTableExecute(object o)
{
    UIThread.BeginInvoke(new Action<object>(SendToTableExecuteUI),o);
}

private void SendToTableExecuteUI(object o)
{
    if (o is Control)
    {
        m_OwningWindow = UIHelper.FindVisualParent<Window>((Control)o);
    }

    do sth...

    if (m_OwningWindow != null)
    {
        //only set DialogResult when window is ShowDialog before
        if(System.Windows.Interop.ComponentDispatcher.IsThreadModal)
            m_OwningWindow.DialogResult = true;
    }
}

不久以前， m_OwningWindow。的DialogResult = TRUE 抛出异常。所以我增加了一个检查是否使用IsThreadModal。它已经工作了一段时间，但现在m_OwningWindowdoes不敢靠近，因为IsThreadModal是假的。

Sometime ago, m_OwningWindow.DialogResult = true throws exception. So I added an if check that uses IsThreadModal. It has worked for a while, but now m_OwningWindowdoes not close because IsThreadModal is false.

我不知道什么是解决问题的正确途径，并认为我没有正确处理它。
请帮助。在此先感谢

I do not know what's the right way to solve the issue and think I did not handle it properly. Please help. thanks in advance

推荐答案

贾森的答复想起一个解决办法的我。即使用window.close（）的，然后加上窗口bool类型的财产，说OKClicked，更换任何地方设置的DialogResult与window.close（）的; window.OKClicked = true或false。参考替换用window.OKClicked到window.DialogResult。
与解决方法有什么问题？谢谢

Jason's reply reminds me of a workaround. i.e. using Window.Close(), then add a bool type property on window, say OKClicked, replace anywhere that set DialogResult with window.Close(); window.OKClicked = true or false. replace reference to window.DialogResult with window.OKClicked. Any problem with the workaround? thanks

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