Drag and Drop Appointments from a DataGrid to RadSchedualview

[Sammy]

Trying to figure out how to do this.

I have a list of appointments in a regular silverlight DataGrid. I would like to Drag and Drop an appointment, from the DataGrid, to the RadScheduleView. Basically, this would be a copy of the appointment, but at a different time (for background info: the DataGrid shows the most popular appointments for that user, and it would allow them to drag and drop new appointments to the RadScheduleView. This would be a super quick and easy way to create appointments, without typing a single character)

I started to implement this, using the example:
http://demos.telerik.com/silverlight/#ScheduleView/DragDrop

But this shows the source as a RadListBox. I'm not quite understanding how I can change my source from a RadListBox to a regular DataGrid. If I have too, I would change my DataGrid to a RadGrid.

Any suggestions?

Thanks!

[Sammy]

fyi...I switched to a RadGridView and got this working.

[Sammy]

Ok, I have the drag and drop working. However, what is happening, is a Row is actually being removed from the RadGridview. Instead, I would like to implement a copy. Where the appointment is copied from the RadGridView to the ScheduleView.

What events/where should I be looking at to perform a copy, rather than removing rows?

Thanks!

[Dimitrina]

Hello,

 As I understand you have implemented drag from a GridView with the help of the DragDropManager. Your problem is that when you drop the dragged GridViewRow to a destination, then it is removed from the GridView. I suppose that you remove the row once it has been dropped. I am not sure what is your exact implementation but may I ask you to check what code you execute when the DragDropCompleted event is raised? Do you remove the dragged item?

Greetings,
Didie
the Telerik team

[Sammy]

Hi Didie,
Thanks for taking the time to reply.  This is the 1st time I've implemented DragDrop with Telerik controls, so I don't quite understand how it works. Basically, I found some code on your website, and used that. Somehow it all automagically worked. I just don't understand how.  Here is my Xaml code:



      <telerik:RadGridView ...>
            <telerik:RadGridView.RowStyle>
                <Style TargetType="telerik:GridViewRow">
                    <Setter Property="drag:DragDropManager.AllowDrag" Value="True"  />
                </Style>
            </telerik:RadGridView.RowStyle>
<gridDrag:GridViewDragDrop.Behavior>

      <gridDrag:GridViewDragDropBehavior  />

  </gridDrag:GridViewDragDrop.Behavior>

 

  <gridDrag:GridViewDragDrop.DataConverter>

      <local:DataConverterAppointments />

  </gridDrag:GridViewDragDrop.DataConverter>

 

  <gridDrag:GridViewDragDrop.DragVisualProvider>

      <dragDropBehaviors:ScreenshotDragVisualProvider />

  </gridDrag:GridViewDragDrop.DragVisualProvider>
      </telerik:RadGridView>


Here are the classes:

public class GridViewDragDrop : DragDrop<GridViewDragDropHelper, GridViewDragDropBehavior, Telerik.Windows.DragDrop.Behaviors.DragDropState>
{

}

public class GridViewDragDropBehavior : DragDropBehavior<Telerik.Windows.DragDrop.Behaviors.DragDropState>
{

}

public class GridViewDragDropHelper : DragDropHelper<GridViewDragDropBehavior, Telerik.Windows.DragDrop.Behaviors.DragDropState>
{

    protected override IList GetItemsSource(FrameworkElement control)
    {
        var gridView = control as RadGridView;

        return gridView == null ? null : (IList)gridView.ItemsSource;
    }

    protected override DependencyObject GetContainerFromItem(FrameworkElement control, object item)
    {
        return ((RadGridView)control).ItemContainerGenerator.ContainerFromItem(item);
    }

    protected override IEnumerable<object> GetDraggedItems(FrameworkElement element)
    {
        var gridView = element.ParentOfType<RadGridView>();
        if (gridView != null)
        {
            var selectedItems = gridView.SelectedItems;
            var item = element.DataContext;

            if (!selectedItems.Contains(item))
            {
                if (gridView.SelectionMode == System.Windows.Controls.SelectionMode.Single)
                {
                    gridView.SelectedItem = item;
                }
                else
                {
                    selectedItems.Add(item);
                }
            }

            return selectedItems.OfType<object>().ToList();
        }
        return Enumerable.Empty<object>();
    }

    protected override FrameworkElement FindDragSource(FrameworkElement element)
    {
        return element as RadGridView ?? element.ParentOfType<RadGridView>();
    }

    protected override FrameworkElement FindDraggedItem(FrameworkElement element)
    {
        return element as GridViewRow ?? element.ParentOfType<GridViewRow>();
    }

    protected override FrameworkElement FindDropItemsControl(FrameworkElement element, object data)
    {
        return element as RadGridView ?? element.ParentOfType<RadGridView>();
    }

    protected override FrameworkElement FindDropTarget(FrameworkElement element)
    {
        return element as RadGridView ?? element.ParentOfType<RadGridView>();
    }
}

There are 2 empty classes, and 1 that does some workl
I don't quite understand how the row is being removed, or what event I need to tie into to copy from the RadGridView, rather than remove from it.

Thanks for your time.