C#中double.TryParse解析坐标时丢失小数点问题及解决方法

执行double.TryParse(coordinates[0], out double lat)后，坐标的度数部分丢失了小数点，求技术同行帮忙排查解决。

使用CultureInfo.InvariantCulture作为解析时的文化信息，即可解决该问题。

string dataInput = "44.807222 14.000000, 44.759167 14.035556, 44.755000 14.011944, 44.794167 13.983333;44.800000 13.685278, 44.707222 13.733333, 44.685278 13.605833, 44.793889 13.496111;";

// Split on semicolon to get individual polygons
string[] polygonStrings = dataInput.Split(';');

// Create a list to store GMapPolygons
List<GMapPolygon> polygons = new List<GMapPolygon>();

foreach (var polygonString in polygonStrings)
{
    // Split each polygon string on comma to get individual coordinates
    string[] coordStrings = polygonString.Trim().Split(',');

    // Create a list to store PointLatLng objects for each polygon
    List<PointLatLng> points = new List<PointLatLng>();

    foreach (var coordString in coordStrings)
    {
        // Split each coordinate string on space to get latitude and longitude
        string[] coordinates = coordString.Trim().Split(' ');

        // Ensure there are two coordinates
        if (coordinates.Length == 2 && double.TryParse(coordinates[0], NumberStyles.Float, CultureInfo.InvariantCulture, out double lat) && double.TryParse(coordinates[1], NumberStyles.Float, CultureInfo.InvariantCulture, out double lon))
        {
            // Create a PointLatLng object and add it to the list of points
            points.Add(new PointLatLng(lat, lon));
        }
        else
        {
            Console.WriteLine($"Error parsing coordinates: {coordString}");
        }
    }

    // Create Polygon
    GMapPolygon polygon = new GMapPolygon(points, "ime");
    polygon.Fill = new SolidBrush(Color.FromArgb(0, Color.Blue));
    polygon.Stroke = new Pen(Color.Red, 1);

    // Add the polygon to the list
    polygons.Add(polygon);
}

内容的提问来源于stack exchange，提问作者nway