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Node Deleting and Link Deleting Events (Read 1410 times)

rajesh_patil74 Full Member Offline I love YaBB 1G - SP1! Posts: 220 Joined: Sep 3^rd, 2009	Node Deleting and Link Deleting Events Dec 14^th, 2009 at 1:08pm	Print Post
	Hi Stoyo For some requirement I extended the Diagram Control and attaching popup menu with the links created. The popup menu is handled within the newly derived class. One of the menu item removes the link by invoking the this.Links.Remove(link) Now, whether the link should be removed or not is checked by my control which contains the derived diagram control. Here my requirement is I need events which can cancle the delete action based on validation. How I can achive this or when we have events like OnLinkDeleting/OnNodeDeleting or OnLinkBeforeDeleting/OnNodeBeforeDeleting ? -Regards Rajesh


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Node Deleting and Link Deleting Events Reply #1 - Dec 14^th, 2009 at 2:08pm	Print Post
	Hi Rajesh, Links.Remove calls the protected Diagram.RemoveItem method to remove the link. You could override RemoveItem and raise validation events from it. To cancel the action, simply don't call the base RemoveItem implementation. I hope that helps, Stoyan


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