How can i get a grouptilebox destination after a event dragdrop

[Cleber]

When i move a tileElement from the group A to a group B or Group C... how can i know what group the tileElement went? but just after i release the tileElement in the group. 

i've tried this code:

public Form1()

{

    InitializeComponent();

    this.radPanorama1.PanoramaElement.DragDropService.Stopping += new EventHandler<Telerik.WinControls.RadServiceStoppingEventArgs>(DragDropService_Stopping);

}

 

void DragDropService_Stopping(object sender, Telerik.WinControls.RadServiceStoppingEventArgs e)

{

    if (e.Commit)

    {

        RadTileElement tile = this.radPanorama1.PanoramaElement.DragDropService.Context as RadTileElement;

    }

}

and then i tried to get tile.parent.parent... but doing this i get the source group... not the destination....
thanks

[Stefan]

Hi Cleber,

Thank you for writing.

To identify the group you have dropped a tile to, you can use the PreviewDragDrop event of the DragDropService:

void DragDropService_PreviewDragDrop(object sender, RadDropEventArgs e)
{
    TileGroupElement group = GetTargetGroup(new RectangleF(e.DropLocation, ((RadTileElement)e.DragInstance).Size));

    if (group != null)
    {
       //this is the target group
    }
}

protected virtual TileGroupElement GetTargetGroup(RectangleF tileRectangle)
{
    TileGroupElement result = null;
    float maxIntersection = 0;

    foreach (TileGroupElement group in radPanorama1.PanoramaElement.Groups)
    {
        if (tileRectangle.IntersectsWith(group.ControlBoundingRectangle))
        {
            RectangleF intersection = tileRectangle;
            intersection.IntersectsWith(group.ControlBoundingRectangle);
            float surface = intersection.Width * intersection.Height;
            if (surface > maxIntersection)
            {
                maxIntersection = surface;
                result = group;
            }
        }
    }

    return result;
}

I hope that you find this information useful. Let us know if you have any other questions.
 
Regards,
Stefan
Telerik