PIE SDK矢量数据的创建

 1      //创建矢量要素数据集
 2             //1创建路径
 3             SaveFileDialog saveFileDialog = new SaveFileDialog();
 4             saveFileDialog.Title = "待创建的矢量要素数据集";
 5             saveFileDialog.Filter = "ShapeFile|*.shp";
 6             if (saveFileDialog.ShowDialog() != DialogResult.OK) return;
 7 
 8             //2设置字段
 9             IField field1 = new Field("Name", FieldType.OFTString, 50, 1);
10             field1.Name = "Name";
11             field1.AliasName = "名称";
12 
13             IField field2 = new Field("Level", FieldType.OFTInteger, 50, 1);
14             field2.Name = "Level";
15             field2.AliasName = "级别";
16 
17             //3添加字段
18             IFields fields = new Fields();
19             fields.AddField(field1);
20             fields.AddField(field2);
21 
22             string path = saveFileDialog.FileName;
23             //4创建空间参考信息
24             ISpatialReference spatialReference = SpatialReferenceFactory.CreateSpatialReference((int)PIE.Geometry.GeoCSType.GeoCSType_WGS1984);
25             //5创建矢量要素集
26             IFeatureDataset newFeatureDataset = DatasetFactory.CreateFeatureDataset(path, fields, GeometryType.GeometryPoint, spatialReference, "SHP");
27 
28             #region 6添加point 信息
29             //A POINT
30             IFeature feature = newFeatureDataset.CreateNewFeature();
31             IPoint point = new PIE.Geometry.Point();
32             point.PutCoords(90, 45);
33             feature.Geometry = point as IGeometry;
34 
35             feature.FID = 02;
36             feature.SetValue(0, "A");
37             feature.SetValue(1, 2);
38 
39             //B POINT
40             IFeature feature2 =newFeatureDataset.CreateNewFeature();
41             IPoint point2 = new PIE.Geometry.Point();
42             point2.PutCoords(93, 40);
43             feature2.Geometry = point2 as IGeometry;
44 
45             feature2.FID = 01;
46             feature2.SetValue(0, "B");
47             feature2.SetValue(1, 3);
48             #endregion
49   //将要素字段信息添加进矢量数据集里面
50             newFeatureDataset.AddFeature(feature);
51             newFeatureDataset.AddFeature(feature2);
52             //第一种方法：
53             IFeatureLayer featureLayer = new FeatureLayer(); 
54             IFeatureClass fClass = new FeatureClass(newFeatureDataset);
55             featureLayer.FeatureClass = fClass;
56 
57             //第二种方法：
58    // IFeatureLayer featureLayer = LayerFactory.CreateDefaultFeatureLayer(newFeatureDataset);
59             //创建空间索引，为要素数据集创建空间索引
60             newFeatureDataset.CreateSpatialIndex(1);
61             //(featureLayer.FeatureClass as IFeatureDataset).CreateSpatialIndex(2);     
62             m_mapControl.FocusMap.AddLayer(featureLayer as ILayer);          m_mapControl.PartialRefresh(ViewDrawPhaseType.ViewAll);