BF2Statistics.MedalData.MedalDataEditor.DeleteCriteria C# (CSharp) Method

        public void DeleteCriteria()
        {
            // Make sure we have a node selected
            if (ConditionNode == null)
            {
                MessageBox.Show("Please select a criteria to remove.");
                return;
            }

            // Dont update tree till we are finished adding/removing
            AwardConditionsTree.BeginUpdate();

            if (ConditionNode.Parent == null)
            {
                AwardConditionsTree.Nodes.Remove(ConditionNode);
                ValidateConditions(SelectedAwardNode, SelectedAward.GetCondition());
            }

            // Dont delete on Plus / Div Trees
            else if (!(ConditionNode.Tag is ConditionList))
            {
                TreeNode Parent = ConditionNode.Parent;
                ConditionList C = (ConditionList)Parent.Tag;

                // Remove Not Conditions, as they only hold 1 criteria anyways
                if (C.Type == ConditionType.Not)
                {
                    AwardConditionsTree.Nodes.Remove(Parent);
                }

                // Dont remove Plus or Div elements as they need 2 or 3 to work!
                else if (C.Type == ConditionType.Plus || C.Type == ConditionType.Div)
                {
                    ConditionNode = Parent;
                    AwardConditionsTree.SelectedNode = Parent;
                    EditCriteria();
                }
                else
                {
                    // Remove Node
                    AwardConditionsTree.Nodes.Remove(ConditionNode);

                    // remove empty parent nodes
                    if (Parent.Nodes.Count == 0)
                        AwardConditionsTree.Nodes.Remove(Parent);
                }
            }
            else
                AwardConditionsTree.Nodes.Remove(ConditionNode);

            // Get our selected medal condition
            Condition Cond = null;

            // Set awards new conditions
            if (AwardConditionsTree.Nodes.Count > 0)
            {
                Cond = MedalDataParser.ParseNodeConditions(AwardConditionsTree.Nodes[0]);
                SelectedAward.SetCondition(Cond);
            }
            else
                SelectedAward.SetCondition(null);

            // Reparse conditions
            AwardConditionsTree.Nodes.Clear();
            TreeNode NN = SelectedAward.ToTree();
            if (NN != null)
                AwardConditionsTree.Nodes.Add(NN);

            ValidateConditions(SelectedAwardNode, Cond);
            AwardConditionsTree.EndUpdate();
            AwardConditionsTree.ExpandAll();
        }