AStartTest.AStar.AddNeighborNodesToOpenList C# (CSharp) Method

        private void AddNeighborNodesToOpenList(Node currentNode, List<Tile> neighborTiles)
        {
            bool openHasNeighbor = false;
            Node neighborNode;
            int openCount = openNodes.Count;
            int openNodeSimilarIndex = 0;
            for (int i = 0; i < neighborTiles.Count; i++)
            {
                openHasNeighbor = false;

                if (openDict.ContainsKey(neighborTiles[i].ID))
                {
                    openHasNeighbor = true;
                    for (int j = 0; j < openCount; j++)
                    {
                        if (openNodes[j].tile == neighborTiles[i])
                        {
                            //openHasNeighbor = true;
                            openNodeSimilarIndex = j;
                            break;
                        }
                    }
                    //openNodeSimilarIndex = neighborTiles[i].ID;
                }

                neighborNode = TransformToNode(neighborTiles[i], currentNode);
                if (openHasNeighbor)
                {
                    if (neighborNode.currentCost < openNodes[openNodeSimilarIndex].currentCost)
                    {
                        openNodes[openNodeSimilarIndex] = TransformToNode(openNodes[openNodeSimilarIndex].tile, currentNode);
                    }
                }
                else
                {
                    openNodes.Add(neighborNode);
                    openDict.Add(neighborTiles[i].ID, neighborTiles[i]);
                }
            }
        }