Excel坐标点转线

1. IWorkspaceFactory pShpWksFact = new ShapefileWorkspaceFactory();
2. IFeatureWorkspace pFeatWks;
3. pFeatWks = (IFeatureWorkspace)pShpWksFact.OpenFromFile(filePath, 0);
4. const
   string strShapeFieldName = "Shape";
5. //定义属性字段
6. IFields pFields = new Fields();
7. IFieldsEdit pFieldsEdit;
8. pFieldsEdit = pFields as IFieldsEdit;
9. IField pField = new Field();
10. IFieldEdit pFieldEdit = new Field() as IFieldEdit;
11. pFieldEdit.Name_2 = strShapeFieldName;
12. pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
13. pField = pFieldEdit as IField;
14. //定义几何属性
15. IGeometryDef pGeomDef = new GeometryDef();
16. IGeometryDefEdit pGeomDefEdit = new GeometryDef() as IGeometryDefEdit;
17. pGeomDefEdit = pGeomDef as IGeometryDefEdit;
18. switch (shpTypeComboBox.Text)
19. {
20.     case "Point":
21.         pGeomDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
22.         break;
23.     case "Polyline":
24.         pGeomDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline;
25.         break;
26.     case "Polygon":
27.         pGeomDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon;
28.         break;
29. }
30.  
31. pGeomDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline;
32. pGeomDefEdit.SpatialReference_2 = new UnknownCoordinateSystem() as ISpatialReference;
33. pFieldEdit.GeometryDef_2 = pGeomDef;
34. pFieldsEdit.AddField(pField);
35. pFields = pFieldsEdit as IFields;
36. IFeatureClass pFeatureClass;
37. pFeatureClass = pFeatWks.CreateFeatureClass(fileName, pFields, null, null,
38.     esriFeatureType.esriFTSimple, strShapeFieldName, "");
39. //添加属性字段
40. for (int i = 0; i < addFieldListBox.Items.Count; i++)
41. {
42.     IField pfield = new Field();
43.     IFieldEdit pfieldEdit = new Field() as IFieldEdit;
44.     pfieldEdit.Name_2 = addFieldListBox.Items[i].ToString();
45.     pfieldEdit.Type_2 = esriFieldType.esriFieldTypeString;
46.     pfield = pfieldEdit as IField;
47.     pFeatureClass.AddField(pfield);
48. }
49. //绘制线
50. IFeatureClassWrite fr = pFeatureClass as IFeatureClassWrite;
51. IWorkspaceEdit w = (pFeatureClass as IDataset).Workspace as IWorkspaceEdit;
52. IFeature f;
53. //可选参数的设置
54. object Missing = Type.Missing;
55. IPoint p = new PointClass();
56. w.StartEditing(true);
57. w.StartEditOperation();
58. //定义一个多义线对象
59. IPolyline PlyLine = new PolylineClass();
60. //定义一个点的集合
61. IPointCollection ptclo = PlyLine as IPointCollection;
62. ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
63. ISpatialReference spatialReference = spatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
64. for (int i = 0; i < excelDataGridViewX.Rows.Count - 1; i++)
65. {
66.     f = pFeatureClass.CreateFeature();
67.  
68.     DataGridViewRow dataRow = excelDataGridViewX.Rows[i];
69.     double pointX, pointY;
70.     pointX = double.Parse(dataRow.Cells[xComboBoxEx.Text].Value.ToString());
71.     pointY = double.Parse(dataRow.Cells[yComboBoxEx.Text].Value.ToString());
72.     p.PutCoords(pointX,pointY);
73.     ptclo.AddPoint(p, ref Missing, ref Missing);
74.     for (int j = 0; j < addFieldListBox.Items.Count; j++)
75.     {
76.         string fieldName = addFieldListBox.Items[j].ToString();
77.         f.set_Value(f.Fields.FindField(fieldName),
78.             dataRow.Cells[fieldName].Value.ToString());
79.     }
80.     IPolyline ppolyline = new PolylineClass();
81.     ppolyline = (IPolyline)ptclo;
82.     ppolyline.SpatialReference = spatialReference;
83.     f.Shape = ppolyline;
84.     fr.WriteFeature(f);
85. }
86.  
87. //f.Store();
88.  
89. w.StopEditOperation();
90. w.StopEditing(true);
91. //添加新建的数据至Map中
92. axMapControl.AddShapeFile(filePath, fileName);
93. //this.Hide();