错误-System.IndexOutOfRangeException:索引超出了数组的界限

我得到这个错误：

System.IndexOutOfRangeException: Index was outside the bounds of the array.

运行此代码时：

foreach(var row in data)
{
     string strAddr = row.ADDRESS1 + "," + row.CITY + "," + row.ST;
     GoogleMapsDll.GeoResponse myCoordenadas = new GoogleMapsDll.GeoResponse();
     myCoordenadas = GoogleMapsDll.GoogleMaps.GetGeoCodedResults(strAddr);
     string strLat = myCoordenadas.Results[0].Geometry.Location.Lat.ToString();  
     string strLong = myCoordenadas.Results[0].Geometry.Location.Lng.ToString();
     System.Threading.Thread.Sleep(10); 
}

我不知道它到底意味着什么，也不知道我该如何修复它。任何意见都将不胜感激。