C# InputEventArgs.ToString方法代码示例

        //Drag and Drop
        /// <summary>
        /// Creates Cursor and starts drag of image
        /// get help at msdn: Dragging and Dropping Items from ScatterView Controls to SurfaceListBox Controls
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DragSourcePreviewInputDeviceDown(object sender, InputEventArgs e)
        {
            log.Debug("DragSourcePreviewInputDeviceDown(object " + sender.ToString() + ", InputEventArgs " + e.ToString() + ") - Begin");
            FrameworkElement findSource = e.OriginalSource as FrameworkElement;
            ScatterViewItem draggedElement = null;
            ScatterViewItem sci = sender as ScatterViewItem;
            Image img = sci.Content as Image;

            // Find the ScatterViewItem object that is being touched.
            while (draggedElement == null && findSource != null)
            {
                if ((draggedElement = findSource as ScatterViewItem) == null)
                {
                    findSource = VisualTreeHelper.GetParent(findSource) as FrameworkElement;
                }
            }

            if (draggedElement == null)
            {
                return;
            }

            object data = draggedElement.Content;
            
            // If the data has not been specified as draggable, 
            // or the ScatterViewItem cannot move, return.
            if (data == null)
            {
                return;
            }

            // Set the dragged element. This is needed in case the drag operation is canceled.
            //data.DraggedElement = draggedElement;

            // Create the cursor visual.
            ContentControl cursorVisual = new ContentControl()
            {
                Content = img,
                //Style = FindResource("CursorStyle") as Style
            };

            // Create a list of input devices, 
            // and add the device passed to this event handler.
            List<InputDevice> devices = new List<InputDevice>();
            devices.Add(e.Device);

            // If there are touch devices captured within the element,
            // add them to the list of input devices.
            foreach (InputDevice device in draggedElement.TouchesCapturedWithin)
            {
                if (device != e.Device)
                {
                    devices.Add(device);
                }
            }

            // Get the drag source object.
            ItemsControl dragSource = ItemsControl.ItemsControlFromItemContainer(draggedElement);

            // Start the drag-and-drop operation.
            SurfaceDragCursor cursor =
                SurfaceDragDrop.BeginDragDrop(
                // The ScatterView object that the cursor is dragged out from.
                  dragSource,
                // The ScatterViewItem object that is dragged from the drag source.
                  draggedElement,
                // The visual element of the cursor.
                  cursorVisual,
                // The data attached with the cursor.
                  img,
                // The input devices that start dragging the cursor.
                  devices,
                // The allowed drag-and-drop effects of the operation.
                  DragDropEffects.Move);

            // If the cursor was created, the drag-and-drop operation was successfully started.
            if (cursor != null)
            {
                // Hide the ScatterViewItem.
                //draggedElement.Visibility = Visibility.Hidden;
                //Console.WriteLine("Begin Drag");
                // This event has been handled.
                log.Debug("DragSourcePreviewInputDeviceDown() handled - End");
                e.Handled = true;
            }
            log.Debug("DragSourcePreviewInputDeviceDown() check if handled - End");
        }