从asp.net生成KML [英] Generating KML from asp.net

问题描述

我将SharpKML与asp.net（C＃）一起使用，它生成的kml可以在谷歌地图上加载和工作，但问题是我不能添加一些东西，比如：



样式，开始和结束点（大黄色针脚），将线条分成块而不是连续的长线。



i尝试了一切，但它甚至不起作用文档标记未添加到输出中。

I used SharpKML with asp.net(C#) it generates kml which loads and works in Google Maps but problem is that i can't add few things like:

Styles, Start and End points (big yellow pins), Dividing line string into chunks instead of continuous long line.

i tried everything but it doesn't work even document tag is not added in output.

protected void Button1_Click(object sender, EventArgs e)
    {
        var document = new Document();
        document.Id = "Document";
        document.Name = "Document";
        SharpKml.Dom.Style style = new SharpKml.Dom.Style();
        style.Id = "yellowLineGreenPoly";
        //style.Line = new LineStyle(new Color32(HexStringToColor("7f00ffff"),4));

        //Color32 col = HexStringToColor("7f00ffff");
        //LineStyle ls = new LineStyle();
        //ls.Color = col;
        //style.Line = ls;
        //document.AddStyle(style);
        Description ds = new Description();
        ds.Text = @"<h1>Car's Tracking</h1> ";
       

        LineString linestring = new LineString();
        CoordinateCollection coordinates = new CoordinateCollection();
        //Color clr = Color.FromArgb(100, 150, 75);
        //clr.ToArgb();

        SqlConnection sqlcon = new SqlConnection(conStr);
       // String com = "select Latitude, Longitude from Coordinates where IMEI=@txtIMEI";
        SqlCommand sqlcom = new SqlCommand("GetLatLon", sqlcon);
        sqlcom.CommandType = CommandType.StoredProcedure;
        sqlcom.Parameters.Add("@IMEI", SqlDbType.VarChar).Value= TextBox1.Text;

        DataTable dt = new DataTable();
        SqlDataAdapter sda = new SqlDataAdapter(sqlcom);
        sda.Fill(dt);

        try
        {
            sqlcon.Open();
            sqlcom.ExecuteNonQuery();

            foreach (DataRow dr in dt.Rows) 
            {
                double lon = double.Parse(dr["Longitude"].ToString());
                double lat = double.Parse(dr["Latitude"].ToString());
                coordinates.Add(new Vector(lat, lon));
            }

            linestring.Coordinates = coordinates;
            Placemark placemark = new Placemark();
            placemark.Name = "Car's Track Record";
            placemark.Description = ds;            
           // placemark.StyleUrl = new Uri("#yellowLineGreenPoly", UriKind.Relative);
            placemark.Geometry = linestring;

            document.AddFeature(placemark);
           // linestring.Extrude = true;
            linestring.Tessellate = true;
            linestring.AltitudeMode = AltitudeMode.RelativeToGround;
            var kml = new Kml();
           // kml.Feature = document;
            kml.Feature = placemark;
            KmlFile kmlFile = KmlFile.Create(kml, true);
            using (var stream = System.IO.File.OpenWrite("C:/"+"IMEI-"+TextBox1.Text+".kmz"))
            {
                kmlFile.Save(stream);
                Response.Write("KML Created");
            }

        }
        catch (Exception exc)
        {
            Response.Write(exc.Message);
        }
        finally 
        {
            sqlcon.Close();
        }
    }

推荐答案

从您的代码中看，您似乎期待奇迹。您添加到kml对象的唯一项目是地标。好吧，使用地标你还可以添加 linestring 和坐标。虽然您也将地标添加到文档，但是没有直接或间接添加文档的行 - 至 kml 。

From your code, it looks like you are expecting a miracle. The only item you add to kml object is the placemark. Well, with the placemark you also add linestring and the Coordinates. Though you add the placemark also to the document, there is no line where the document gets added - directly or indirectly - to kml.

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