Question

我创建了一种“处理”对话框，它显示了某个进程的进程。它包含一个进度条和一个Label。这是代码：

public class ProcessingDialog
    {
        FrontWindow win;
        public ProcessingDialog(int min, int max, string initialMessage,string title, bool isContineous)
        {
            Thread th= new Thread(new ThreadStart(delegate()
            {
                win = new FrontWindow();
                win.Title = title;
                if (isContineous == false)
                {
                    win.ProgressBarProgress.Minimum = min;
                    win.ProgressBarProgress.Maximum = max;
                }
                else
                    win.ProgressBarProgress.IsIndeterminate = true;

                win.LabelStatus.Content = initialMessage;
                win.ShowInTaskbar = false;
                win.Topmost = true;
                win.ShowDialog();
            }
            ));
            th.SetApartmentState(ApartmentState.STA);
            th.Start();
        }


        public void Increment(int margin)
        {
            win.Dispatcher.Invoke(new ThreadStart(delegate { win.ProgressBarProgress.Value+=margin; }), null); ;
        }

        public void Reset()
        {
            win.Dispatcher.Invoke(new ThreadStart(delegate { win.ProgressBarProgress.Value=0; }), null); ;
        }

        public void ChangeMessage(string message)
        {
            win.Dispatcher.Invoke(new ThreadStart(delegate { win.LabelStatus.Content=message; }), null); ;
        }


        public void Close()
        {
            win.Dispatcher.Invoke(new ThreadStart(delegate { win.Close(); }), null); ;
        }
    }

这是FrontWindow的标记：

<Window x:Class="WpfApplicationUnleashed.FrontWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="FrontWindow" Height="165" Width="300" WindowStyle="ThreeDBorderWindow" WindowStartupLocation="CenterOwner" ResizeMode="NoResize">
    <DockPanel>
        <ProgressBar x:FieldModifier="public" x:Name="ProgressBarProgress" Height="15" Margin="20" DockPanel.Dock="Top" VerticalAlignment="Top"></ProgressBar>
        <Label x:FieldModifier="public" x:Name="LabelStatus" Margin="10" VerticalAlignment="Top" HorizontalAlignment="Left" DockPanel.Dock="Bottom"></Label>
    </DockPanel>
</Window>

这是我显示对话框的窗口。它只包含一个按钮，其点击事件是这样的：

   private void button1_Click(object sender, RoutedEventArgs e)
        {
            ProcessingDialog pd = new ProcessingDialog(0, 10, "Starting", "Processing", false);
            Thread.Sleep(1000);

            pd.ChangeMessage("Step 1");
            pd.Increment(1);
            Thread.Sleep(1000);

            pd.ChangeMessage("Step 2");
            pd.Increment(1);
            Thread.Sleep(1000);

            pd.ChangeMessage("Step 3");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 4");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 5");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 6");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 7");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 8");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 9");
            pd.Increment(1);
            Thread.Sleep(1000);


            pd.ChangeMessage("Step 10");
            pd.Increment(1);
            Thread.Sleep(1000);

            pd.Close();


        }

问题在于，当它显示时，如果我再次单击该按钮，当对话框关闭时，它会再次打开。我的意思是它没有被点击，因为它是模态，但它只是排队，当对话框关闭时，它被点击。

如何防止这种情况发生？

Answer 1

可能bind a command到该按钮并编写一个CanExecute方法，该方法会阻止命令执行（如果该命令已在进行中）。

Answer 2

如果在前窗打开时不打算使用后窗，我会在前窗上设置一个事件来禁用后窗，然后在关闭时启用后窗。

MouseClicks返回窗口WPF

2 个答案: