AspNetEdit.SampleHost.SampleHost.openButton_Clicked C# (CSharp) Method

        static void openButton_Clicked(object sender, EventArgs e)
        {
            FileChooserDialog fcd = new FileChooserDialog ("Open page...", (Window)((Widget)sender).Toplevel, FileChooserAction.Open);
            fcd.AddButton(Stock.Cancel, ResponseType.Cancel);
            fcd.AddButton(Stock.Open, ResponseType.Ok);
            fcd.DefaultResponse = ResponseType.Ok;
            fcd.Filter = new FileFilter();
            fcd.Filter.AddPattern ("*.aspx");
            fcd.SelectMultiple = false;

            ResponseType response = (ResponseType) fcd.Run( );
            fcd.Hide ();

            if (response == ResponseType.Ok && fcd.Filename != null)
                using (FileStream fileStream = new FileStream (fcd.Filename, FileMode.Open))
                {
                    if (fileStream == null)
                        return;

                    host.Reset ();

                    host.Load (fileStream, fcd.Filename);
                    host.Activate ();
                }
            fcd.Destroy();
        }