BF2Statistics.MedalData.ConditionListForm.EditCriteria C# (CSharp) Method

        public void EditCriteria()
        {
            // Grab the selected treenode
            TreeNode SelectedNode = ConditionTree.SelectedNode;

            // Make sure we have a node selected
            if (SelectedNode == null)
            {
                MessageBox.Show("Please select a criteria to edit.");
                return;
            }

            // Make sure its a child node, and not the topmost
            if (SelectedNode.Parent == null) // && SelectedNode.Nodes.Count != 0)
                return;

            // Open correct condition editor form
            if (SelectedNode.Tag is ObjectStat)
                Child = new ObjectStatForm(SelectedNode);
            else if (SelectedNode.Tag is PlayerStat)
                Child = new ScoreStatForm(SelectedNode);
            else if (SelectedNode.Tag is MedalOrRankCondition)
                Child = new MedalConditionForm(SelectedNode);
            else if (SelectedNode.Tag is GlobalStatMultTimes)
                Child = new GlobalStatMultTimesForm(SelectedNode);
            else if (SelectedNode.Tag is ConditionList)
                Child = new ConditionListForm(SelectedNode);
            else
                return;

            if (Child.ShowDialog() == DialogResult.OK)
            {
                ConditionList NN = new ConditionList(List.Type);
                NN = (ConditionList) MedalDataParser.ParseNodeConditions(ConditionTree.Nodes[0]);

                ConditionTree.Nodes.Clear();
                ConditionTree.Nodes.Add(NN.ToTree());
                ConditionTree.Refresh();
                ConditionTree.ExpandAll();
            }
        }