Delimit space into the DiagramWebControl for some Rectangles

[Rod]

Hi,
First at all, thanks for your quick answear to my last post.


I would like to know if it is posible to create one or more small rectangles into a big rectangle and let the user to move the smallers into the big one, but not to allowing him to move them out of the big one.
What I need is to use a big rectangle to delimited a space into the DiagramWebControl, but this limit should be resized by the user.


Thanks.

[Administrator]

Hi Rod,
Sorry for the delay in response. Please check the code snippet given below which uses the grouping concept to achieve you requirement and it does not allow the node in a group to be placed away from its bounds.

private RectangleF groupBound;
private bool flagOnce;
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
flagOnce = true;
this.DiagramWebControl1.Model.EventSink.PinPointChanged += new PinPointChangedEventHandler(EventSink_PinPointChanged);
Group boundGroup = new Group();
for (int nodeCount = 1; nodeCount < 5; nodeCount++)
{
sRectange rectangle = new sRectange(100, nodeCount * 50, 100, 25);
rectangle.Name = "Node" + nodeCount.ToString();
this.DiagramWebControl1.Model.AppendChild(rectangle);
}
boundGroup.ShowResizeHandles();
this.DiagramWebControl1.Model.AppendChild(boundGroup);
groupBound = boundGroup.BoundingRectangle;
}
}

void EventSink_PinPointChanged(PinPointChangedEventArgs evtArgs)
{
Node node = (Node)evtArgs.NodeAffected;
if (!(groupBound.IntersectsWith(node.BoundingRectangle)))
{
if (flagOnce)
{
flagOnce = false;
node.PinPoint = new PointF(node.PinPoint.X - evtArgs.Offset.Width, node.PinPoint.Y - evtArgs.Offset.Height);
}

}
}

Please let me know if there is any concerns in this regard.

Regards,
Dinesh