void Load(string controlID)
        {
            if (openDia.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                SerializationHelper.CopyFile(openDia.FileName,
                                             Environment.CurrentDirectory + "\\Content\\TileMaps", true);

                string[] split = openDia.FileName.Split(
                    new char[] { '\\', '/', '.' },
                    StringSplitOptions.RemoveEmptyEntries);

                switch (tilesSelected)
                {
                case true:
                {
                    tileSheetFilePath = "TileMaps\\" + split[split.Length - 2];

                    tiles = Common.ContentBuilder.Load <Texture2D>(tileSheetFilePath);

                    tileSheet.Texture = tiles;
                }
                break;

                case false:
                {
                    normalMapFilePath = "TileMaps\\" + split[split.Length - 2];

                    normalMap = Common.ContentBuilder.Load <Texture2D>(normalMapFilePath);

                    tileSheet.Texture = normalMap;
                }
                break;
                }

                HideLoadingTools();

                if (OnLoadedTilemap != null)
                {
                    OnLoadedTilemap();
                }
            }
        }