Hi 'bracos!

I'm a bit lost here working with an asp:CheckboxList. The list displays several categories that is related (using the relationship api) to a document. The member is then able to edit the document and change the selected values(categories) and save the document.

So, in technical terms when a member clicks the 'Save' button I need to:

• Check if the selected item/node is already related to the document, if not: make a new relation
• For every item/node that's not selected, check to see if there is a relation to the document, if there is: delete it.

   spot2CategoryRelations = Relation.GetRelations(nodeId, spot2Category);
        foreach (Relation r in spot2CategoryRelations)
        {
            relatedCategories.Add(new Node(r.Parent.Id));
        }
        Node relatedNode = null;
        foreach (ListItem l in cbMemberTypes.Items)
        {
            int i = 0;
            bool found = false;
            while (!found && i < relatedCategories.Count)
            {
                if (l.Text.Equals(relatedCategories[i].Name))
                {
                    relatedNode = relatedCategories[i];
                    found = true;
                }
                i++;
            }
            if (l.Selected)
            {
                if(!Relation.IsRelated(relatedNode.Id, nodeId))
                {                   
                    Relation.MakeNew(nodeId, relatedNode.Id, spot2Category, nodeId + " is related to " + relatedNode.Name);
                }
            }
            else
            {
                foreach (Relation r in spot2CategoryRelations)
                {
                    if (Relation.IsRelated(nodeId, relatedNode.Id))
                    {
                        r.Delete();
                    }
                }
            }
        }