var geoCoords = worldfoot.Replace(" ", "").Replace("\r\n", "").Split(new string[] { "]," }, StringSplitOptions.RemoveEmptyEntries);                    var distinctGeo = new Dictionary<string, string>();                    foreach (var item in geoCoords)                    {                        var data = http://www.mamicode.com/item.Split(‘:‘);                        if (!distinctGeo.ContainsKey(data[0]))                        {                            distinctGeo.Add(data[0], item);                        }                    }                    var sb = new StringBuilder();                    foreach (var item in distinctGeo)                    {                        sb.Append(item.Value);                        sb.AppendLine("],");                    }                    worldfoot = sb.ToString();