piesdk打开自定义矢量数据(代码片段)

 1 方法（一）打开自定义矢量数据
 2 //以解析Micaps1数据为例
 3     OpenFileDialog openFileDialog = new OpenFileDialog();
 4     openFileDialog.Filter = "Micaps文件(*.000)|*.000";
 5     if (openFileDialog.ShowDialog() == DialogResult.OK)
 6     
 7         IFeatureLayer defineLayer = OpenDefineShp(openFileDialog.FileName);
 8         if (defineLayer != null)
 9         
10 (defineLayer as ILayer).Name = "自定义矢量图层";
11             mapControlMain.FocusMap.AddLayer(defineLayer as ILayer);
12             mapControlMain.ActiveView.PartialRefresh(ViewDrawPhaseType.ViewAll);
13         
14 
15 /// <summary>
16 /// 解析自定义数据，生成矢量
17 /// 以解析Micaps1数据为例，字段只添加站号、经度、纬度、海拔高度
18 /// </summary>
19 /// <param name="filePath">输出SHP文件路径</param>
20 /// <returns></returns>
21   private IFeatureLayer OpenDefineShp(string filePath)
22 
23     IFeatureLayer featureLayer = null;
24     int count = 0;//记录读取数据的行数
25 string[] lineValues = null;//每一行的数据值
26     //字段声明
27         IField field_id = new Field("PointID", FieldType.OFTInteger, 20, 4);
28         field_id.AliasName = "站号";
29 
30         IField field_x = new Field("lon", FieldType.OFTInteger, 20, 4);
31         field_x.AliasName = "经度";
32 
33         IField field_y = new Field("lat", FieldType.OFTInteger, 20, 4);
34         field_y.AliasName = "纬度";
35 
36         IField field_h = new Field("height", FieldType.OFTInteger, 20, 4);
37         field_h.AliasName = "海拔高度";
38 
39         IFields fields = new Fields();
40         fields.AddField(field_id);
41         fields.AddField(field_x);
42         fields.AddField(field_y);
43         fields.AddField(field_h);
44         //建立内存数据集
45         IFeatureDataset pDataset = PIE.DataSource.DatasetFactory.CreateFeatureDataset("", fields, GeometryType.GeometryPoint, null, "MEM");
46         //解析数据文件，写入数据集中
47         string[] valueLines = System.IO.File.ReadAllLines(filePath);
48         char[] charSeperate =  ‘ ‘ ;
49         for (int j = 0; j < valueLines.Length; j++)
50         
51             string str = valueLines[j];
52             if (count == 0 || count == 1)
53             
54                 count = count + 1;
55                 continue;
56             
57             //解析字符串，生成Feature
58             IFeature newFeature = pDataset.CreateNewFeature();
59             lineValues = str.Split(charSeperate, StringSplitOptions.RemoveEmptyEntries);
60             //字段赋值
61             newFeature.SetValue(0, Convert.ToInt32(lineValues[0]));
62             newFeature.SetValue(1, Convert.ToDouble(lineValues[1]));
63             newFeature.SetValue(2, Convert.ToDouble(lineValues[2]));
64             newFeature.SetValue(3, Convert.ToDouble(lineValues[3]));
65 
66             //生成Geometry
67             IPoint point = new PIE.Geometry.Point();
68             point.PutCoords(Convert.ToDouble(lineValues[1]), Convert.ToDouble(lineValues[2]));
69             newFeature.Geometry = point as IGeometry;
70             pDataset.AddFeature(newFeature);
71             count = count + 1;
72       (newFeature as IDisposable).Dispose();
73         
74         featureLayer = PIE.Carto.LayerFactory.CreateDefaultFeatureLayer(pDataset);   
75     return featureLayer;
76