Great!  I eagerly await the service release.

I have 1 more problem to figure out.  Grid rows can only be dragged to certain folders.  I was originally thinking that I could set DropChannel and DragChannel but since I cannot figure out how to set the drag source on a row by row basis this doesn't appear to be an option.

How would your recommend that during that dragover I calculate that the grid row (or rows) is actually allowed to be dropped on this particular XamTreeItem and if its not, change curror back to not allowed?

I think this is my last hurdle.

Thanks in advance!

Ken

Steve,

First, thanks for the quick reply.

I actually already tried the first method you suggested by taking the default style for the CellControl from the XamGrid.xaml file in the Default Styles folder.  It was working at the cell level (meaning it showed the cell dragging).  I opted for the method I did in the demo application because it let me control how the drag worked.  And I liked it except I have the annoying requirement that each grid row needs to drag to potentially different XamTreeItems.  Meaning it can only be dragged to 2 of the 10 nodes, etc.  The only way to accomplish this I believe (since I don't see any events on the DropTarget (why?)) is to set the Drag and Drop Channels.  Which is why I need to do it at the row level.  Your CellControlAttached event actually did help as I could do this

DragSource source = DragDropManager.GetDragSource(e.Cell.Row.Control);
            
if (source == null)
{
  source = new DragSource { IsDraggable = true, DataObject = e.Cell.Row, 
               DragChannels = new ObservableCollection<string>() { "test" } };
  DragDropManager.SetDragSource(e.Cell.Row.Control, source);
}

But there is 1 thing I don't like about this. It drags the whole entire row
visually when all I really want is the cursor to change.  Is there a way I could
set the drag template in code?  Or in xaml, while still attaching each
row.Control to the DragDropManager?

Thanks in advance.

Hi, 

Yes, on your DragSource, you just need to hook up the DragStart event, and set the e.DragSnapshotElement to what you want to display. 

One thing to note about the code you posted, is that a CellsPanel, which is the Control for the Row, isn't always hooked up to the same Row, as its recycled when it scrolled out of view. So i'd suggest setting the DataObject to the Control instead, and accessing it's Row property in your other events. 

Hope this helps, 

-SteveZ

Steve,

Ok, I basically just want the default icon change and no elements showing.  Maybe I could null it our or set it to a hidden UiElement or something?

Is your second note, you mention about the CellsPanel being recyled.  Thanks for pointing that out.  It probably would of caused me heartache down the road.  You suggest setting the DataObject to the Control instead.  Could you elaborate a little on what you mean?  It won't let me do this

DragDropManager.SetDragSource(e.Cell.Row, source);

Row object must not decend from DependencyObject.  When you say set it to the control instead, I'm confused.  From a Row standpoint, what control?  The grid?  Then I'm back to my initial problem of how can I customize each rows DragChannel so I can control which rows are allowed to be dropped to which XamTreeItems?  If my requirements aren't clear, I could modify my above example to show what I need (just need to add a new Column (FolderId).  The treeview I am dragging to would represent folders.  So each row should only be dragged to certain folders (xamtreeitems).

Thanks again for your help, I really appreciate it.

Ken

Hey Ken, 

I didn't mean to use the e.Cell.Row as the DragSource, you must use the Control as the DragSource. 

What i meant was, that you're setting the DataObject to the Row:

source = new DragSource { IsDraggable = true, DataObject = e.Cell.Row, .....

instead set the DataObject to the e.Cell.Row.Control. 

Then when you access the DataObject, you can get access to the row from the CellsPanel.

As for just displaying the default icon, you can try setting it to null, although that might cause it to use the

default.  If thats the case, then as you said, setting it to an empty element such as a Canvas should

do the trick. 

Steve,

I have my CellControlAttached defined like this

private void igGridTransactions_CellControlAttached(object sender, CellControlAttachedEventArgs e)
{
  DragSource source = DragDropManager.GetDragSource(e.Cell.Row.Control);

  if (source == null)
  {

    source = new DragSource { IsDraggable = true, DragChannels = new  ObservableCollection<string>() { "test" } };   
    source.DragStart += new EventHandler<DragDropStartEventArgs>(DragSource_DragStart);         
      DragDropManager.SetDragSource(e.Cell.Row.Control, source);
  }
           
}

My DragStart code

private void DragSource_DragStart(object sender, Infragistics.DragDrop.DragDropStartEventArgs e)
{           
  e.DragSnapshotElement = new TextBox()
  { Visibility = System.Windows.Visibility.Collapsed, Text = "" };


  // disabling grid is only way I can figure out how to prevent rows from selecting while
  // I'm dragging over them??? I re-enable in DragEnd
  igGridTransactions.IsEnabled = false;

  e.Data = igGrid.SelectionSettings.SelectedRows;
}

This seems to do what I want.  The only thing I've noticed is that the XamGrid is now selecting all rows my mouse cursor scrolls over (even before I do any drag).  I believe or hope this is the known issue from above.  As soon as I comment out the CellControlAttached DragDropManager logic, the grid selection issue goes away.  Hopefully this is just a manifestation of the previously mentioned bug.

Thanks for all you help!

Bummer, I don't see a service release for 10.2 Line of Business (which has the same problem).  I only see a 10.1 service release.  Was hoping to bite the bullet and just upgrade to 10.2 to get the name spaces in order.

Thanks for all your help guys.

Plamen,

Thanks, great link.

Plamen,

Any idea when that service release is coming out? 

Is there a forum or place on your site I can read about service releases (dates and info on what was fixed etc).