WPF Xaml Designer-在设计时处置资源

Question

I have a WPF window with some resources that create a TCP connection:

<HMIDesign:HMIBaseWindow.Resources>
    <DataSource:MyDataSource x:Key="DataCtx1" />
</HMIDesign:HMIBaseWindow.Resources>

But when I close the designer window that host the Form, the connection remains open and so, if I open the form again a new TCP connection will start.

How can I handle the Disconnection in this scenario?

Answer 1

It should be possible to do this using the Closing Event on the Window.

    private void MainWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
        if (Resources.Contains["DataCtx1"])
        {
            MyDataSource dataSource = Resources["DataCtx1"] as MyDataSource;

            if (dataSource != null)
            {
                dataSource.Close();
            }
        }
    }