private void LoadProject_Click(object sender, RoutedEventArgs e)
        {
            if (load == null)
            {
                List<string> filter = new List<string>(new string[] { "*.asgproj" });
                load = new LoadDialog(ActiveSessionManager, this, filter, LoadDialog.LoadDialogType.Project);
            }

            ScatterViewItem newItem = Container.ItemContainerGenerator.ContainerFromItem(load) as ScatterViewItem;
            if (newItem == null)
            {
                Container.Items.Add(load);
                newItem = Container.ItemContainerGenerator.ContainerFromItem(load) as ScatterViewItem;
                newItem.Orientation = 0;
                newItem.Height = this.Height / 1.5;
                newItem.Width = this.Width / 3;
                newItem.Center = CanvasItem.ActualCenter;
            }
        }
        private void LoadImage_Click(object sender, RoutedEventArgs e)
        {
            List<string> filter = new List<string>( new string[] {"*.gif","*.jpg","*.jpeg","*.png"});
            load = new LoadDialog(ActiveSessionManager, this, filter, LoadDialog.LoadDialogType.BackgroundImage);
            Container.Items.Add(load);

            ScatterViewItem newItem = Container.ItemContainerGenerator.ContainerFromItem(load) as ScatterViewItem;
            newItem.Orientation = 0;
            newItem.Height = load.MinHeight + 50;
            newItem.Width = load.MinWidth + 50;

            newItem.Center = CanvasItem.ActualCenter;
        }